2021 GMC TERRAIN

2 recalls, 53 complaints - 776 TSBs - 5/5 safety rating

CHILD SEAT:VEHICLE LATCH ANCHOR

Defect Description

General Motors, LLC (GM) is recalling certain 2020-2023 Chevrolet Equinox and GMC Terrain vehicles. The four rear-seat lower child seat LATCH anchorage bars may have excessive powder coating, which could prevent a child seat from being installed with the anchorage bars. As such, these vehicles fai... Read more

Consequence

The inability to install a child seat with the LATCH anchorage bars could result in an unsecured child seat, increasing the risk of injury in a crash.

Remedy

Owners are advised to install child seats using the vehicle's rear seat belts until the remedy is complete. Dealers will inspect the latch anchorage bars, and remove and replace the finish, as necessary, free of charge. Owner notification letters were mailed June 2, 2023. Owners may contact Chevr... Read more

668,187 vehicles affected

Manufacturer: General Motors, LLC

TIRES:TREAD/BELT

Defect Description

General Motors, LLC (GM) is recalling certain 2021-2022 Chevrolet Equinox and GMC Terrain vehicles equipped with certain Hankook tires. The tires may have been manufactured with an insufficient amount of curative agent, which could cause tread separation.

Consequence

Tread separation can result in a loss of vehicle control, increasing the risk of a crash.

Remedy

Dealers will inspect the tire DOT numbers, and replace any affected tires, free of charge. Owner notification letters were mailed on August 31, 2021. Owners may contact GMC customer service at 1-800-462-8782; and Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N212343... Read more

9,597 vehicles affected

Manufacturer: General Motors, LLC

Complaint Statistics

53 total complaints 1 crashes 1 injuries

Top Reported Components

Component	Complaints
ENGINE	9
POWER TRAIN	8
ELECTRICAL SYSTEM	6
UNKNOWN OR OTHER	5
SERVICE BRAKES	3
STEERING	3
SUSPENSION	3
STRUCTURE:BODY	2
VISIBILITY/WIPER	1
AIR BAGS:FRONTAL:DRIVER CLOCKSPRING/SPIRAL CASSETTE	1

Incident date: Jul 12, 2026

COMPLAINT SUMMARY: [XXX] / ENGINE THERMAL FIRE RISK / WARRANTY DECEPTION My 2019 Hyundai Santa Fe (2.4L GDI Engine) is experiencing severe powertrain degradation under the known Theta II engine defect class-action framework. On November 7, 2025, the vehicle logged a Permanent Diagnostic Trouble Co... Read more

Incident date: Jun 28, 2026

Suspension exhibits excessive bounce/instability over road irregularities, unsafe on uneven pavement, affects steering control. Car available for inspection. Checked by two authorized dealerships, both closed as "operating as designed" without resolving it. Also inspected by manufacturer's Field Ser... Read more

Incident date: Jun 28, 2026

In the past 2 days, my vehicle engine has shut off 11 times while driving. This is happening while I am moving so it is a huge safety issue for myself and other drivers. Over the course of 3 months, the vehicle has done this over 20 times. It happens when coasting, slowing down at a stop light and p... Read more

Incident date: Apr 13, 2026

Backup camera has been mostly inoperable for two years. The display is blurry at best, and works intermittently. Most often, the screen displays "Camera Not Available" or just goes black. Ford has issued a recall for other model years but needs to include the 2014 as we have the same issues.

Incident date: Feb 13, 2026

Steering has seemed sticky since I bought car in July. On Jan. 30 after a 20 min drive on a freeway I entered a long sweeping right turn curve. During the turn the steering when jerked 3 times to the left. If there had been a car next to me, this would have caused a serious accident. Research sho... Read more

Incident date: Feb 13, 2026

I purchased a new 2025 Tesla Model 3. During normal driving conditions, the rear bumper detached without any collision or impact. The bumper became loose while the vehicle was moving, creating a potential safety hazard. Tesla Service inspected the vehicle but declined warranty coverage and refused ... Read more

Incident date: Aug 1, 2025

Front passenger head restraint deployed without any accident or reason. Just deployed without cause snapping a plastic bracket so it can’t be manually pushed back into place you have to purchase the entire component. The other oddity is the piece that you need to replace in question has been disco... Read more

Incident date: Jan 26, 2026

My 2018 Traverse has had several issues the past few years such as the electrical components in the car turning on and off randomly, a shift to park message which has been fixed twice, and the most current problem is the transmission. I was out of town 160 miles away with my family of 6 and we were... Read more

Incident date: Jan 26, 2026

The vehicle frequently fails to engage gas engine when depressing gas pedal to any degree. A full push of the gas pedal does not result in gas engine engagement. This has happened over 15 ties since the recall computer update last summer (2025). This creates extreme danger because the operator expec... Read more

Incident date: Jan 26, 2026

Incident date: Dec 24, 2025

Well I don't know I bought my car from extreme Auto I don't know if he is paying the police off or what to exchange cars or vin numbers but my vehicle has a few of the recalls that are still rolling on the ABS light is coming on the engine Department a few other things that I could not get fixed and... Read more

Incident date: May 11, 2023

Nissan has failed in a timely manner to get the service bulletin out about the engine recall

Incident date: Jun 20, 2025

The contact owns a 2019 Chrysler Pacifica. The contact stated that while driving at various speeds, after making a slight adjustment of the steering wheel to the right, while returning to center, the steering wheel was sticking and required extra force to return the steering wheel to center. The con... Read more

Incident date: Jun 20, 2025

Seat belt locked up on my son(8yr old) on the back of passager seat. he can't unbuckle. It got tight. I have to drove to fire department ask for help. We had 3 fire fighters helping him to get out of it. they can't. so the fire fighters have to cut the seat belt.

Incident date: Jun 20, 2025

The contact owns a 2017 Honda Ridgeline. The contact stated that while driving at various speeds, the transmission was slipping. There was no warning light illuminated. The vehicle was taken to a local mechanic, where it was diagnosed, and the contact was informed that a transmission flush was neede... Read more

Incident date: Apr 1, 2025

The vehicles horn does not when pressed. Multiple other users have complained of the same issue affecting their vehicle as well.

Incident date: Jun 29, 2025

Extreme oil consumption would cause a catastrophic engine failure. Low oil warning light going off (3 times within 3000 miles) requiring the need to add oil. Oil on dipstick is down to the bottom. Had local Big O check it out - oil had been lost. Currently doing a 1000 mile oil consumption test... Read more

Incident date: Jun 29, 2025

The contact owns a 2020 Ford Edge. The contact stated that while driving at an undisclosed speed and attempting to accelerate, the vehicle hesitated and shuddered abnormally. No warning lights were illuminated. The vehicle returned to normal functionality, but the failure became a regular occurrence... Read more

Incident date: Jun 29, 2025

Shift sticks in Park position. Intermittent problem happening often.

Incident date: Sep 19, 2024

So my car started to stall when I started it an when I started goin down the road like it wanted to die. Then I started to smell gas very strong so had a code tester put to my car an i have 6 permanent codes. An not only that im smelling oil strong an noticing big oil spots under my car. So I look u... Read more

Incident date: Sep 19, 2024

Incident date: Mar 1, 2025

Gear Shifter stuck in D with amber light blinking constantly. At the same time, the Amber Wrench symbol appeared on the dash, with "Service vehicle soon" warning message. This indicates a Powertrain malfunction/Reduced Power issue. Vehicle towed to nearest Ford dealer (Scenic Ford, Mount Airy, NC) w... Read more

Incident date: Apr 24, 2025

I lease a car through Carvana, and they informed me that the car was safe and properly inspected. In the first 2 weeks, I took the Chevrolet to a certified dealership for a routine inspection. I was informed that the vehicle has severe mechanical and electrical issues. The engine needs to be replace... Read more

Incident date: Apr 24, 2025

Had an engine seizure with no warning. The event occurred on 03/22/2025. The vehicle has been in the dealership since then, with no line of sight to a replacement engine. The vehicle had barely over 15k miles. When the engine seized, it went to neutral, there was not power stirring and no breaks.... Read more

Incident date: Mar 14, 2025

The contact owns a 2017 Ford Escape. The contact stated that upon starting the vehicle, there was white smoke coming from the exhaust pipes. The contact stated that after a visual inspection of the engine compartment, the contact became aware that the engine oil level was extremely low. No warning l... Read more

Incident date: Mar 14, 2025

The contact owns a 2011 Cadillac SRX. The contact stated that while driving at an undisclosed speed, there was an abnormal sound coming from the rear suspension. The vehicle was taken to the dealer where it was diagnosed with severely corroded suspension. The vehicle was not repaired. The contact wa... Read more

Incident date: Sep 25, 2024

The car began to jerk, made knocking noises, miss fires on cylinder 1, 2 and 4, coolant leakages, oil leakages, compression issues and the check engine light keeps turning on and off. My safety has been put into play because, the car would jerk many of times as it would want to stop as I was driving... Read more

Incident date: Sep 25, 2024

The contact owns a 2017 Ford Focus. The contact stated while at a stop, the vehicle stalled. The contact attempted to depress accelerator pedal, but the vehicle failed to accelerate. The check engine warning light was illuminated. The vehicle was driven to the dealer to be diagnosed. The vehicle was... Read more

Incident date: Sep 25, 2024

The contact owns a 2020 GMC Terrain. The contact stated while driving 20 MPH, while attempting to slow down, the brake pedal was depressed; however, the brake pedal felt abnormally stiff. In addition, the vehicle hesitated to come to a complete stop. The contact became aware that the driver's side a... Read more

Incident date: Sep 3, 2024

Travel Assist is disabled which includes Adaptive Cruise Control and Lane Keep Assist. The warning lights flash on and off, sometimes multiple times a second, sounding a loud beeping each time. The flashing lights and associated rapid beeping indicating the failure is extremely distracting while dri... Read more

Incident date: Jul 30, 2021

If vehicle is parked in sun the front facing camera and laser located at the top of the windshield overheat then when the vehicle is started the overheated front facing camera is offline so the collision, lane depart/assist and auto dimming system will not boot so those safety features are offline a... Read more

Incident date: Dec 20, 2023

The air conditioning stopped cooling on several ocasiones, they changed the air sistema and it failed egain

Incident date: Dec 20, 2023

Within two month the Lithium ion battery failed twice. and the car was not derivable. It had to bet towed to the dealer.

Incident date: Dec 20, 2023

Within two month the Lithium ion battery failed twice. and the car was not derivable. It had to bet towed to the dealer.

Incident date: Jan 29, 2024

I have had to replace 3 back wheel bearings in less than a year. I replaced both back wheel bearings at different times, and the I just had to replace another one. The parts were brand new. If they had broken while I was driving my 45 minute commute on [XXX] to work, it would have killed me. Or if i... Read more

Incident date: Oct 6, 2023

Cars automatic emergency braking activated for no apparent reason

Incident date: Jul 6, 2022

The car has had multiple issues with the hybrid system. I’ve taken it to the dealership about 4-5 times. They “fix” the issue but a little while later I’m having more hybrid warming issues. This last time I took it to a different dealership, paid for a diagnostic test, and was told my hybrid... Read more

Incident date: Aug 9, 2023

Opened door as usual made loud pop noise and now does not shut properly and flings open. Window will not go down and when I accidentally tried to put it down it made the dash flash and go blank for awhile. Ford said it is a known issue but my car went out of warranty in May and directed me to Ford... Read more

Incident date: Apr 13, 2023

My vehicle has an electrical problem due to the recall. I took it into the Buick dealer. They could not find an electrical problem. But there is an electrical problem. And has been since I bought it at Jim Riles in Washington Township Michigan.

Incident date: Apr 13, 2023

Incident date: Feb 7, 2023

On February 6, 2023 at approximately 9:50 a.m. I was driving my Hyundai Ioniq 5 SEL northbound on CA Highway 135, Santa Maria, when I heard a loud pop coming from my car. Within a few seconds my car lost speed rapidly, from 55 mph to 25 then a second later 22 mph . I tried to accelerate - there wa... Read more

Incident date: Feb 7, 2023

The contact owns a 2013 Hyundai Azera. The contact stated that when the vehicle was started, the volume of the radio failed to function as needed. Additionally, she also noticed that the passenger’s side air bag warning light was illuminated. The vehicle was diagnosed by an independent mechanic, a... Read more

Incident date: Feb 7, 2023

Just purchased this vehicle has about 64500 miles on it. When accelerating between 40-55 (hard acceleration) my vehicle wobbles really bad, seems like a tire issue. Have had the front end looked at, and tires all balanced and inspected. Noting out of the ordinary. Then all of a sudden my rear view b... Read more

Incident date: Oct 13, 2022

Recently I have noticed that the back brakes squeak and sound like they are grinding when backing up. Also every now and then the information screen will go black for a while then turn back on could be a few seconds or several minutes. 23,900 on car

Incident date: Oct 13, 2022

Incident date: Jul 26, 2022

There is a rattle in the b pillar/roof area. They have attempted to fix it 4 or more times by adding adhesive between layers of metal. The fix that other dealerships have done per reading online involves cutting through metal. This would affect the integrity of the body/ frame of the car.

Incident date: Mar 17, 2022

The contact owns 2021 GMC Terrain. The contact stated upon starting the vehicle and attempting to shift the vehicle to drive, the vehicle inadvertently reversed. The contact depressed the brake pedal. There were no warning lights illuminated. The contact stated that the gear shift selector was stuck... Read more

Incident date: Jan 3, 2022

While driving my vehicle and talking on the phone, the radio screen went black. Bluetooth or nothing in connection to it was working. After about 2 hours it came back on. I was told to bring to dealership to be checkout, but it came back on. I'm going to take it to the dealership. My vehicle ha... Read more

Incident date: Nov 30, 2021

I dropped my son off at school and he mistakenly took my car keys into school with him, and somehow I was able to drive all the way home, 4.5 miles, with no key in the car and no warning to stating the remote wasn't in the car. The issue with this is if I'd driven further, perhaps to another state, ... Read more

Showing 50 of 53 complaints.

NHTSA Safety Ratings, 2021 GMC TERRAIN

2021 GMC Terrain SUV AWD

Category	Rating
Overall Rating	5 / 5 ★★★★★
Frontal Crash	5 / 5 ★★★★★
Frontal Crash, Driver	5 / 5 ★★★★★
Frontal Crash, Passenger	5 / 5 ★★★★★
Side Crash	5 / 5 ★★★★★
Side Crash, Driver	5 / 5 ★★★★★
Side Crash, Passenger	5 / 5 ★★★★★
Rollover	4 / 5 ★★★★☆
Rollover Risk	16.4%

Safety Technology

Feature	Status
Electronic Stability Control	Standard
Forward Collision Warning	Standard
Lane Departure Warning	Standard

Source: NHTSA 5-Star Safety Ratings Program. Ratings are based on crash tests conducted by the National Highway Traffic Safety Administration.

Technical Service Bulletins, 2021 GMC TERRAIN

776 manufacturer communications from 387 unique bulletins. TSBs describe known problems and recommended fixes from the manufacturer.

Most Affected Components

Component	Bulletins
350000 EQUIPMENT	138
060000 ENGINE AND ENGINE COOLING	104
110000 ELECTRICAL SYSTEM	103
100000 POWER TRAIN	65
355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL	45
160000 STRUCTURE	31
200000 WHEELS	24
060000 ENGINE (PWS)	23

200000 WHEELS

This service bulletin provides information for dealers/technicians on Tire Radial Force Variation (RFV).

350000 EQUIPMENT

This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.

110000 ELECTRICAL SYSTEM

350000 EQUIPMENT

This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.

110000 ELECTRICAL SYSTEM

This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.

350000 EQUIPMENT

This bulletin updates the position of General Motors on refinishing aluminum wheels. GM has determined that wheel refinishing under warranty will no longer be performed.

200000 WHEELS

This bulletin updates the position of General Motors on refinishing aluminum wheels. GM has determined that wheel refinishing under warranty will no longer be performed.

110000 ELECTRICAL SYSTEM

This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.

110000 ELECTRICAL SYSTEM

This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.

111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY

This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.

350000 EQUIPMENT

This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.

355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.

118000 ELECTRICAL SYSTEM:SOFTWARE

This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.

355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

This service bulletin provides information on submitting quality Photos of Various Vehicle Concerns to the GM Technical Assistance Center (TAC).

280000 BACK OVER PREVENTION

This preliminary information discusses potential camera functional issues if the camera is not properly programmed.

160000 STRUCTURE

This technical bulletin provides repair information to correct a customer concern of an interior boom noise heard while driving low speeds in high gear.

100000 POWER TRAIN

This technical bulletin provides repair information to correct a customer concern of an interior boom noise heard while driving low speeds in high gear.

350000 EQUIPMENT

This preliminary information discusses a condition that may arise from the drivers window switch sending an errant message causing the vehicle to enter manual fob learn mode.

110000 ELECTRICAL SYSTEM

This preliminary information discusses a condition that may arise from the drivers window switch sending an errant message causing the vehicle to enter manual fob learn mode.

350000 EQUIPMENT

This service bulletin provides information on No Heated Seats or Heated Steering Wheel During Remote Start.

220000 SEATS

This service bulletin provides information on No Heated Seats or Heated Steering Wheel During Remote Start.

110000 ELECTRICAL SYSTEM

This service bulletin provides information on No Heated Seats or Heated Steering Wheel During Remote Start.

010000 STEERING

This service bulletin provides information on No Heated Seats or Heated Steering Wheel During Remote Start.

060000 ENGINE AND ENGINE COOLING

This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels shou

350000 EQUIPMENT

This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.

350000 EQUIPMENT

This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).

030000 BRAKES (PWS)

This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel pressure situation.

070000 FUEL SYSTEM, GASOLINE

This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel pressure situation.

355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

This service bulletin provides information on All hazmat parts being returned to the Warranty Parts Center (WPC) must be shipped using Central Transport. Hazardous materials should never be sent by air transportation to the WPC.

980000 UNKNOWN OR OTHER

This warranty administration bulletin provides information regarding the field action courtesy transportation policy.

110000 ELECTRICAL SYSTEM

This Preliminary information communicates a vehicle may come to the dealer with a complaint of no start, stalling, rough idle, no acceleration, loss of power, erratic shifting, fuel gauge inoperative, MIL illuminated with various codes stor

060000 ENGINE AND ENGINE COOLING

This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.

260000 FORWARD COLLISION AVOIDANCE

This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting. This is normal when the FAB has been set to "Alert".

060000 ENGINE AND ENGINE COOLING

This technical bulletin provides a procedure to replace the charge air cooler due to moisture getting inside of it and causing a malfunction indicator lamp illuminated with DTC P0300 and/or P0299/P2227.

110000 ELECTRICAL SYSTEM

160000 STRUCTURE

060000 ENGINE AND ENGINE COOLING

This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.

063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL

This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.

070000 FUEL SYSTEM, GASOLINE

This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.

100000 POWER TRAIN

This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle

060000 ENGINE AND ENGINE COOLING

353000 EQUIPMENT:ELECTRICAL

This Preliminary information communicates an issue where the vehicles wireless charger no longer works with certain ISO updates on Apple 15 phones and advises customer to update their phone to the lastest ISO update.

350000 EQUIPMENT

This service bulletin provides information on the EL-52800 Diagnostic & Charge Battery Station (DCBS) a?? FAQs.

110000 ELECTRICAL SYSTEM

This service bulletin provides information on the EL-52800 Diagnostic & Charge Battery Station (DCBS) a?? FAQs.

220000 SEATS

This technical bulletin provides a procedure to replace the radiator brackets if found loose to correct a customer concern of excessive vibration in the steering wheel or seat or floor at idle or at low to moderate speeds.

060000 ENGINE AND ENGINE COOLING

010000 STEERING

350000 EQUIPMENT

This service bulletin assists technicians in setting up PicoScope hardware/software to monitor CAN bus traffic (voltage patterns) to aid Technical Assistance (TAC) and Field Service Engineers (FSEs) in diagnosing electrical issues present o

110000 ELECTRICAL SYSTEM

100000 POWER TRAIN

This service bulletin provides information on a normal characteristic of a transmission that will not shift into overdrive range during cold ambient temperatures.

160000 STRUCTURE

This technical bulletin provides repair information to correct a customer concern of finding a water leak inside the interior of the vehicle.

160000 STRUCTURE

This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers.

110000 ELECTRICAL SYSTEM

This service bulletin provides a procedure to check for water intrusion at the door electrical connectors and repair the wiring if found the cause of customer concerns of Power Windows and/or Mirrors Inoperative, Power Seat Movement Inopera

160000 STRUCTURE

220000 SEATS

356000 EQUIPMENT ADAPTIVE/MOBILITY

138000 VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

This technical bulletin provides a procedure for air conditioning refrigerant desiccant replacement due to A/C Not Cooling or refrigerant loss.

350000 EQUIPMENT

This technical bulletin provides a procedure for air conditioning refrigerant desiccant replacement due to A/C Not Cooling or refrigerant loss.

110000 ELECTRICAL SYSTEM

This technical bulletin provides a procedure to add reflective butyl tape to the rear driver's side module to correct the radar reflection being detected and triggering the false alerts.

284300 BACK OVER PREVENTION: SENSING SYSTEM: RADAR

This technical bulletin provides a procedure to add reflective butyl tape to the rear driver's side module to correct the radar reflection being detected and triggering the false alerts.

355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.

355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

This Preliminary Information communication provides information to the technician about vibration complaints that are one of the most challenging complaints to accurately diagnose and repair. Technician will need to use Pico Oscilloscope Di

100000 POWER TRAIN

This PI bulletin advises the technician on the proper way to install the pistons in an engine.

120000 EXTERIOR LIGHTING

This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.

060000 ENGINE AND ENGINE COOLING

This PI bulletin advises the technician on the proper way to install the pistons in an engine.

110000 ELECTRICAL SYSTEM

This preliminary information (PI) provides information om Service Programming System (SPS) Error Codes (E4398, E4399, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491 or E6961).

251000 ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)

This service bulletin provides a procedure to locate and repair the engine wiring harness to correct customer concerns of multiple electrical issues.

060000 ENGINE AND ENGINE COOLING

This service bulletin provides a procedure to locate and repair the engine wiring harness to correct customer concerns of multiple electrical issues.

100000 POWER TRAIN

This service bulletin provides a procedure to locate and repair the engine wiring harness to correct customer concerns of multiple electrical issues.

110000 ELECTRICAL SYSTEM

This service bulletin provides a procedure to locate and repair the engine wiring harness to correct customer concerns of multiple electrical issues.

030000 BRAKES (PWS)

This service bulletin provides a procedure to locate and repair the engine wiring harness to correct customer concerns of multiple electrical issues.

350000 EQUIPMENT

This Preliminary Information communication provides information to the technician about the use of J-35616-64B terminal test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking

980000 UNKNOWN OR OTHER

This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.

110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS

This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.

353000 EQUIPMENT:ELECTRICAL

This Preliminary information communicates an issue where the vehicles wireless charger no longer works with the latest ISO update on Apple 15 phones.

353650 EQUIPMENT:ELECTRICAL:WIRELESS CHARGER/CRADLE

This Preliminary information communicates an issue where the vehicles wireless charger no longer works with the latest ISO update on Apple 15 phones.

355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

This service bulletin provides information on Concerns or Questions Regarding Installation of Dealer Installed Accessories.

350000 EQUIPMENT

This service bulletin provides information on Concerns or Questions Regarding Installation of Dealer Installed Accessories.

353650 EQUIPMENT:ELECTRICAL:WIRELESS CHARGER/CRADLE

This Preliminary information communicates an issue where the vehicles wireless charger no longer works with the lastest ISO update on Apple 15 phones.

110000 ELECTRICAL SYSTEM

This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.

060000 ENGINE AND ENGINE COOLING

This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.

350000 EQUIPMENT

This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.

353600 EQUIPMENT:ELECTRICAL:INFOTAINMENT

This Preliminary information communicates an issue where the vehicles wireless charger no longer works with the lastest ISO update on Apple 15 phones.

353610 EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE

This Preliminary information communicates an issue where the vehicles wireless charger no longer works with the lastest ISO update on Apple 15 phones.

100000 POWER TRAIN

This service bulletin advises the tech that the rotational Clicking Noise Heard After Engine Shut Down may be normal characteristics of the vehicle.

110000 ELECTRICAL SYSTEM

This service bulletin advises the tech that the rotational Clicking Noise Heard After Engine Shut Down may be normal characteristics of the vehicle.

350000 EQUIPMENT

This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.

120000 EXTERIOR LIGHTING

This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.

060000 ENGINE AND ENGINE COOLING

This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.

110000 ELECTRICAL SYSTEM

This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.

110000 ELECTRICAL SYSTEM

This technical bulletin provides repair information to correct a customer concern of Vehicle Will Not Lock and Unlock (Loss of Active Functions) Crank or Start (Loss of Passive Functions) with DTC P0513 Set.

350000 EQUIPMENT

110000 ELECTRICAL SYSTEM

This service bulletin provides repair information to correct a customer concern of No Crank, No Start, Quick Start/Stall, No FOB Detected, Key FOBs Inoperative, B3924 00, B3925 00, B3926 00, B3927 00, B3928 00 Set.

350000 EQUIPMENT

020000 SUSPENSION

This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer?s vehicles that exhibit vibration conditions without utilizing the

260000 FORWARD COLLISION AVOIDANCE

350000 EQUIPMENT

160000 STRUCTURE

060000 ENGINE AND ENGINE COOLING

200000 WHEELS

This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing vibration concerns.

Showing 100 of 776 bulletins.

GMC TERRAIN - All Years Overview

Complete safety history for the GMC TERRAIN across all model years (2010, 2026).

40 Total Recalls

4,340 Total Complaints

0 Investigations

212 Reported Crashes

67 Reported Fires

5 Reported Deaths

GMC TERRAIN - Year by Year

Compare recalls and complaints across model years. Click any year to see full details.

Year	Recalls	Complaints
2026	1	36	View
2025	0	26	View
2024	1	74	View
2023	2	69	View
2022	2	70	View
2021 (current)	2	53
2020	2	295	View
2019	3	292	View
2018	5	324	View
2017	1	181	View
2016	2	182	View
2015	3	385	View
2014	2	385	View
2013	3	484	View
2012	4	500	View
2011	4	557	View
2010	3	427	View

Other GMC Models

Model	Recalls	Complaints
SIERRA 1500	233	10,607	View
YUKON	224	6,198	View
SIERRA 2500	169	2,217	View
SIERRA 3500	161	730	View
YUKON XL	157	2,899	View
SAVANA	142	448	View
SIERRA	133	4,904	View
ACADIA	84	7,520	View

Vehicle Safety

Consumer Safety

Infrastructure

Public Health

2021 GMC TERRAIN

Complaint Statistics

Top Reported Components

NHTSA Safety Ratings, 2021 GMC TERRAIN

Safety Technology

Technical Service Bulletins, 2021 GMC TERRAIN

Most Affected Components

GMC TERRAIN - All Years Overview

GMC TERRAIN - Year by Year

Other GMC Models