2020 GMC TERRAIN

2 recalls, 304 complaints - 1,046 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

POWER TRAIN:AUTOMATIC TRANSMISSION

Defect Description

General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Cruze and Buick LaCrosse, 2018-2020 Chevrolet Equinox, Chevrolet Traverse and GMC Terrain, 2018 Chevrolet Malibu, 2019-2020 Buick Encore, Buick Enclave, Cadillac XT4, Chevrolet Blazer and GMC Acadia, and 2020 Cadillac XT6 vehicles. Th... Read more

Consequence

Missing bolts on the start-stop accumulator endcap could result in a transmission oil leak and may progress to a loss of propulsion, increasing the risk of a crash. A transmission fluid leak in the presence of an ignition source may increase the risk of fire.

Remedy

GM will notify owners, and dealers will inspect the start-stop transmission accumulator and replace it if any bolts are missing, free of charge. The recall began December 15, 2020. Owners may contact GMC customer service at 1-888-988-7267, Buick Customer service at 1-866-608-8080, Chevrolet custom... Read more

194,105 vehicles affected

Manufacturer: General Motors LLC

Complaint Statistics

304 total complaints 14 crashes 1 fires 9 injuries

Top Reported Components

Component	Complaints
ENGINE	48
ELECTRICAL SYSTEM	34
UNKNOWN OR OTHER	33
POWER TRAIN	24
SERVICE BRAKES	20
FUEL/PROPULSION SYSTEM	16
AIR BAGS	12
VEHICLE SPEED CONTROL	11
STEERING	10
EXTERIOR LIGHTING	9

Incident date: Dec 17, 2021

Having the start stop issue on my terrain and recently over the last few months, it has been using oil everything that sounds exactly like the recall but mine is not included. My start stop is not working and I have to get him since it had only 60,000 miles on it years ago, but nothing was done.

Incident date: Dec 17, 2021

Incident date: Sep 2, 2026

Fuel pump control module and or the in tank fuel pump failed and or isn’t making proper connection for car to run correctly. Safety was put at risk as car came to abrupt halt while driving. Driver was outside of vehicle at busy intersection for vehicle diagnostics and battery jump. Battery was ... Read more

Incident date: Aug 24, 2026

The contact owns a 2020 GMC Terrain. The contact stated that while driving at an undisclosed speed, the vehicle failed to stop as intended. The brake pedal was depressed to the floor, and the vehicle slowed down and eventually stopped. The vehicle was taken to an independent mechanic, where it was d... Read more

Incident date: Aug 19, 2026

COMPONENT OR SYSTEM FAILED - GMC Dealership replacing fuel pump. SAFETY OR SAFETY OF OTHERS AT RISK - stalled in remote area with no internet/cell service. In order to get to safety we travelled 13 miles of narrow 2 lane roads with no shoulder or escape areas. Road included 3 miles of a steep downhi... Read more

Incident date: Aug 23, 2026

The brake suddenly became impossible to depress more than 3/4 of an inch. Almost unable to stop nearly hitting another vehicle. The dashboard then lit up with a "service brake system" warning. Luckily was only a few minutes from home brought it home and began the search for the issue. The brake vac... Read more

Incident date: Aug 19, 2026

While driving, I suddenly smelled something burning. Immediately after, a warning popped up stating 'Engine power is reducing,' the check engine light came on, and I experienced a sudden, near-total loss of power braking assist, making the brake pedal extremely hard to press. I had to use intense fo... Read more

Incident date: Aug 19, 2026

Incident date: Aug 6, 2026

During heavy rain, the sunroof on my Terrain leaked badly enough to allow a substantial amount of water into the vehicle. The rear floor area became completely saturated, and the sunroof controls stopped working. I brought the vehicle to Hudson Cadillac Buick GMC in Poughkeepsie, New York, to have t... Read more

Incident date: Jul 25, 2026

I a (CPO) certified pre owned car other MBZ dealers found code (B1A4F13) and rodent damage and fece on engine odor smell from air conditioning and House of imports Mercedes Benz refused to repair and clean engine repair

Incident date: Aug 6, 2026

In my file

Crash

Incident date: Jul 30, 2026

The vehicle experiences sudden, complete electrical power loss while driving at speed on highways and city streets or on the parking. All digital displays turn off, the engine shuts down, and power-assisted steering and braking are instantly lost without prior warning, presenting an extreme collisio... Read more

Incident date: Jul 30, 2026

Incident date: Jul 20, 2026

I am a fire investigator for the Olathe (KS) Fire Department. On July 3, 2026 at 1255 hrs our crews were called to a vehicle fire for the above listed car. The vehicle was reportedly being driven when smoke entered the passenger compartment causing the driver to pull over. He opened the rear tail... Read more

Fire

Incident date: Jul 9, 2026

The vehicle's structural frame rails have suffered a catastrophic failure. The driver-side frame rail has a physical separation gap measuring between 1/2-inch and 1 inch wide. The passenger-side frame rail is actively delaminating and separating from the inside out. The vehicle and the failed compon... Read more

Incident date: Jul 9, 2026

My car stalled stopped and takes a While to turn on , all lights turned on .. coded came back and showed it was fuel pressure regulator / fuel pump. I believe it is part of the recalls put in place for other Honda accord lx as well since I’m having same problem

Incident date: Jul 17, 2026

Driving on I4 to Orlando noticed steering wheel sticking at 11 & 1 o'clock and steering wheel not returning to the straight position. No engine or any other lights illuminated. At dealership for two weeks waiting for back ordered steering rack.

Incident date: Jul 17, 2026

Two days after buying the car while on a trip to [XXX], while driving 70 miles per hour on an interstate using cruise control, the car quickly breaked and our speed went down to about 40. Scared us to death. We pulled off the side of the road to regroup and understand what just happened. We didn'... Read more

Incident date: Jul 17, 2026

I'm not sure if they've pulled it out yet. They said two weeks to get motor. Engine started shaking and then started knocking. Had wrecker take it to GMC dealer they said it needs an engine. It is a 2021 6.2 carbon pro 1500 Sierra AT4 it did not come up on recall list and I don't know why? it obvio... Read more

Incident date: Jul 16, 2026

To start, I had to replace the engine in my 2024 Legacy that I purchased brand new in June 2024. Subaru of America handled the situation incredibly poorly, I was unable to use any warranty and I was out over 6,000 dollars. Second, my passenger airbag light has been on since September 2024. I was tol... Read more

Incident date: Jul 9, 2026

Flywheel cracked. There is a service bulletin on how to fix when there is an issue which to me indicates a known issue.

Incident date: Apr 20, 2026

The contact owns a 2018 Tesla Model 3. The contact stated that while driving on a highway at approximately 70–80 MPH, the hood latch failed, causing the hood to unexpectedly open and strike the windshield, obstructing the driver's visibility. Both the hood and the windshield were damaged. No warni... Read more

Incident date: Jun 15, 2026

This was a rental car. In the rain, the lane assistance would try to correct the vehicle even when the vehicle was in its lane. It was like it didn’t see the lane markings in the rain. The car was wrecked in the rain but had other incidents previously while driving in the rain. The adaptive cruise... Read more

Crash 1 injured

Incident date: Jun 15, 2026

Crash 1 injured

Incident date: Jun 15, 2026

Crash 1 injured

Incident date: May 23, 2026

The contact owns a 2006 Toyota Scion XA. The contact stated that while driving through a green light in second gear, another vehicle ran a light from the left and crashed into the driver's side of the vehicle. The air bags did not deploy. The contact's head struck the side window, and the vehicle sp... Read more

Crash 1 injured

Incident date: Jun 3, 2026

Unexpected braking at highway speeds. This has at least 50 times at highway speeds. The truck has experienced repeated false Forward Collision Alerts and un-commanded Automatic Emergency Braking events. Adaptive Cruise Control frequently detects roadside objects and vehicles in adjacent lanes, part... Read more

Incident date: Jun 3, 2026

Incident date: Jun 7, 2026

Shift to park Malfunction again, 4 th time!! 1000$ to fix is ridiculous

Incident date: Jun 7, 2026

Shift to park Malfunction again, 4 th time!! 1000$ to fix is ridiculous

Incident date: May 30, 2026

On June 7, 2026, I was driving my 2020 GMC Terrain. I was going at about 40MPH along a very busy main road. While slowing for a red light the Check Engine Light turned on and the car displayed a notice about reduced engine power. Seconds later, the brake pedal became stuck and would not press down a... Read more

Incident date: Jun 7, 2026

The check engine light is on for periods of time and then goes off. Maybe the sensor is faulty?

Incident date: Jun 2, 2026

On 6/4, I completed a long road trip of over 650 miles. When I got back into my vehicle to move it to where it would be parked for the night, it displayed messages for a Powertrain Malfunction/Reduced Power and a High Voltage Battery Warning. I powered the car off and back on within about 5 minutes,... Read more

Incident date: Jun 2, 2026

Vehicle will lurch on cold start up. This occurs while in park on a level surface.

Incident date: May 22, 2026

On 05/30/2026 at approximately 15H24, my Tesla Cybertruck was parked and stopped at approx. [XXX] of Target). No one was seated in the driver seat. A passenger entered the vehicle and sat in the front passenger seat to play music. Shortly after the passenger sat down, the vehicle suddenly and unex... Read more

Crash

Incident date: May 22, 2026

My windshield wipers aren’t working properly and it causes me to not be able to see while driving which cause me to hit a curb and damage my front fender and my trunk makes a nose when I drive like it wants to pop open my car flashes warnings and then no sign of issues

Incident date: May 18, 2026

I had NHTSA recall for this generator done (23E-030) which was to solve the same problem I just had. Apparently, they just moved to a smaller diameter fuel line to fit the fuel pump better. However, this hose also came off my Cummins generator fuel pump and was spewing gas all over the generator a... Read more

Incident date: May 18, 2026

Incident date: May 1, 2026

Brakes have screeching noise Transmission jumps when changing gear The shift to park is so constant can not even go out because it takes more than 20 to 30 tries for it to accept park and turn Vehicle off! I have taken it to the dealer for the concern stated no recall or warranty At this point I am... Read more

Incident date: Feb 10, 2026

The contact owns a 2019 Jeep Wrangler. The contact stated that while driving at an undisclosed speed, the instrument panel became inoperable. The contact stated that the instrument cluster began to dim and subsequently went completely blank. The dealer was contacted. The vehicle was not diagnosed or... Read more

Incident date: Apr 21, 2026

Sunroof wouldn’t fully close when a rainstorm hit, causing driver panic attack. This appears to be a known issue under TSB BOD-319.

Incident date: Apr 22, 2026

The contact owns a 2015 Chevrolet Silverado 1500. The contact stated that while driving 40-45 MPH, there was an abnormally loud ticking sound coming from the passenger's side of the engine compartment. There was no warning light illuminated. The vehicle was taken to a local dealer and to another dea... Read more

Incident date: Apr 21, 2026

My 2010 Prius has experienced the following error codes: C12341 and C1391, prompting the dealer to recommend replacing the brake booster assembly and master cylinder for $3938.89. This is a known issue with this vehicle and a Customer Support Program (CSP) was issued back in 2018, stating that if th... Read more

Incident date: Apr 16, 2026

The foam in the head ready broke

Incident date: Dec 15, 2025

I am reporting unresolved safety recalls and unreasonable delay in repair for my 2023 Ford Bronco (VIN: [XXX] ). This vehicle currently has two open safety recalls issued by Ford Motor Company • NHTSA Recall 25V721 (issued October 2025) – seat frame defect that may increase injur... Read more

Incident date: Sep 1, 2022

1- at 71,000 miles in 2022 brake vacuum pump “exploded” broke into many small pieces in the middle of driving. Causing brakes to lock. Brake pedal was brick hard. Hard to maneuver the car out of traffic without causing a collision. Luckily car was not being driven at high speed. At time of repai... Read more

Incident date: Sep 1, 2022

Without any Waring Lights the car goes into " Limp Mode " .ON turnpike roads with Speed Limits at 70 MPH and with some sections with no shoulder to get off the highway this is very dangerous .

Incident date: Sep 1, 2022

Incident date: Jan 26, 2026

I am reporting a safety issue with my 2023 Nissan Rogue Platinum involving engine failure. The vehicle was taken to the dealership for repairs under warranty and remained there for approximately 8 months. I was only provided a loaner vehicle for one month during this time. After finally receiving t... Read more

Incident date: Jun 2, 2023

Unknown. The transmission is kicking really bad. There are recalls on other vehicles similar to ours that are having the same issue. It has been doing this for a while now. It shifts hard from 1st to 2nd gear and when coming to a complete stop it also jerks. Also at times the check engine light com... Read more

Showing 50 of 304 complaints.

NHTSA Safety Ratings, 2020 GMC TERRAIN

2020 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, 2020 GMC TERRAIN

1,046 manufacturer communications from 514 unique bulletins. TSBs describe known problems and recommended fixes from the manufacturer.

Most Affected Components

Component	Bulletins
350000 EQUIPMENT	193
110000 ELECTRICAL SYSTEM	135
060000 ENGINE AND ENGINE COOLING	109
100000 POWER TRAIN	72
355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL	66
060000 ENGINE (PWS)	49
160000 STRUCTURE	39
356000 EQUIPMENT ADAPTIVE/MOBILITY	36

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.

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 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.

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

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.

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.

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".

160000 STRUCTURE

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

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.

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.

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.

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

353500 EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM)

This Preliminary information communicates to dealers of a known issue with failed map 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.

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

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

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

160000 STRUCTURE

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

356000 EQUIPMENT ADAPTIVE/MOBILITY

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

220000 SEATS

160000 STRUCTURE

110000 ELECTRICAL SYSTEM

350000 EQUIPMENT

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

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.

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.

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.

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.

100000 POWER TRAIN

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

060000 ENGINE AND ENGINE COOLING

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.

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

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).

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.

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.

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.

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.

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.

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

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.

980000 UNKNOWN OR OTHER

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

350000 EQUIPMENT

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

355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

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

060000 ENGINE AND ENGINE COOLING

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

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.

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.

350000 EQUIPMENT

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

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 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

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.

110000 ELECTRICAL SYSTEM

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

060000 ENGINE AND ENGINE COOLING

160000 STRUCTURE

350000 EQUIPMENT

020000 SUSPENSION

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.

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.

010000 STEERING

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.

060000 ENGINE AND ENGINE COOLING

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.

100000 POWER TRAIN

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.

200000 WHEELS

This Warranty Administration bulletin is for information on General Motors New Vehicle Tire Warranty Program (U.S. Dealers Only).

110000 ELECTRICAL SYSTEM

Showing 100 of 1,046 bulletins.

GMC TERRAIN - All Years Overview

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

40 Total Recalls

4,384 Total Complaints

0 Investigations

209 Reported Crashes

69 Reported Fires

4 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	41	View
2025	0	29	View
2024	1	75	View
2023	2	70	View
2022	2	78	View
2021	2	53	View
2020 (current)	2	304
2019	3	301	View
2018	5	330	View
2017	1	181	View
2016	2	183	View
2015	3	385	View
2014	2	385	View
2013	3	485	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

2020 GMC TERRAIN

Complaint Statistics

Top Reported Components

NHTSA Safety Ratings, 2020 GMC TERRAIN

Safety Technology

Technical Service Bulletins, 2020 GMC TERRAIN

Most Affected Components

GMC TERRAIN - All Years Overview

GMC TERRAIN - Year by Year

Other GMC Models