Technical Service Bulletins (TSB)

BUICK — ENCORE GX, TRAILBLAZER (2020–2023) — 21 vehicle combinations

100000 POWER TRAIN

This technical bulletin provides a procedure to correct the condition of Service All-Wheel Drive System Messages Displayed with Rear Drive Motor DTC C0095 Set.

BUICK — ENCORE GX, TRAILBLAZER (2020–2024) — 45 vehicle combinations

030000 SERVICE BRAKES, HYDRAULIC

This service bulletin provides a procedure to locate and fix a possible leak in the roof area due to missing sealant to correct customer concerns of Various Electrical Issues, No Start, Stall, Brake Lamp Not Off, Radio Inoperative, Remote K

BUICK — ACADIA, BLAZER, CAMARO, ENCLAVE, ENCORE, ENCORE GX, ENVISION, EQUINOX, ESCALADE, EXPRESS, EXPRESS 3500, MALIBU, SAVANA, SIERRA 1500, SILVERADO 1500, TAHOE, TERRAIN, TRAVERSE, XT4, XT5, XT6, YUKON (2021–2023) — 60 vehicle combinations

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

BUICK — ACADIA, ATS, BLAZER, BOLT EV, CANYON, COLORADO, CT6, CTS, ENCLAVE, ENVISTA, EQUINOX, ESCALADE, ESCALADE ESV, HUMMER EV, MALIBU, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO EV, SILVERADO LT, SUBURBAN, TAHOE, TERRAIN, TRAVERSE, TRAX, VOLT, XT4, XT5, XT6, XTS, YUKON, YUKON DENALI, YUKON XL (2013–2024) — 209 vehicle combinations

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".

BUICK — ENCORE, SONIC, SPARK, TRAX (2012–2022) — 39 vehicle combinations

030000 SERVICE BRAKES, HYDRAULIC

This Preliminary Information communication provides information to the technician about vehicles that had the Brake Pressure Modulator Valve now Diagnostic Trouble Code C0131 is set current. Technician should remove Brake Pressure Modulator

BUICK — ENCORE GX, ENVISTA, TRAILBLAZER, TRAX (2024) — 4 vehicle combinations

010000 STEERING

This Preliminary information communicates to the technician the normal operation of the heated steering wheel during a remote start event.

BUICK — ENCORE, SONIC, TRAX (2017–2018) — 6 vehicle combinations

060000 ENGINE AND ENGINE COOLING

Special Coverage - Certain vehicles equipped with a 1.4L engine may have a condition that could cause the turbocharger to fail. If this condition occurs, the Malfunction Indicator Light (Check Engine Light) will illuminate and a diagnostic

BUICK — ENVISION (2022–2023) — 2 vehicle combinations

118000 ELECTRICAL SYSTEM:SOFTWARE

Customer Satisfaction Program - Certain vehicles may experience a loss of software communication to the Overhead Console which may cause the overhead lights to become inoperative or may incorrectly cause a a??Service Safety Restraint System

BUICK — ACADIA, BLAZER, CAMARO, ENCORE GX, EQUINOX, MALIBU, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO EV, TERRAIN, TRAILBLAZER, TRAVERSE, TRAX (2022–2024) — 98 vehicle combinations

353600 EQUIPMENT:ELECTRICAL:INFOTAINMENT

This Preliminary information communicates to dealer that GM is aware of the issue and is working on a resolution.

BUICK — ENCLAVE (2008–2017) — 10 vehicle combinations

121000 EXTERIOR LIGHTING:HEADLIGHTS

This Preliminary information communicates concerns with dtc U1521 after replacing the headlamp

BUICK — ACADIA, ATS, AVALANCHE, BLAZER, BOLT EV, CAMARO, CANYON, CAPRICE, CAPTIVA, CASCADA, CITY EXPRESS, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, ELR, ENCLAVE, ENCORE, ENVISION, EQUINOX, ESCALADE, ESCALADE ESV, EXPRESS, EXPRESS 1500, EXPRESS 2500, EXPRESS 3500, EXPRESS 4500, EXPRESS CUTAWAY VAN, IMPALA, LACROSSE, MALIBU, REGAL, SAVANA, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO LT, SONIC, SPARK, SRX, SS, SUBURBAN, TAHOE, TERRAIN, TRAILBLAZER, TRAVERSE, TRAX, VERANO, VOLT, XT4, XT5, XT6, XTS, YUKON (2013–2020) — 326 vehicle combinations

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

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

BUICK — ACADIA, BLAZER, CANYON, COLORADO, CORVETTE, CT4, CT5, CT6, ENCLAVE, ENCORE GX, ENVISION, ENVISTA, EQUINOX, ESCALADE, ESCALADE ESV, HUMMER EV, LYRIQ, MALIBU, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SILVERADO EV, SUBURBAN, TAHOE, TERRAIN, TRAILBLAZER, TRAVERSE, TRAX, XT4, XT5, XT6, YUKON, YUKON XL (2021–2024) — 119 vehicle combinations

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.

BUICK — ENCORE, TRAX (2013–2020) — 16 vehicle combinations

100000 POWER TRAIN

This service bulletin advises the technician to replace the rear diff carrier if heavy corrosion caused noise, cracking and/or leaking to correct customer concerns of Clunk or Growl Noise Coming from Rear of Vehicle and/or Rear End Binding

BUICK — CRUZE, ENCORE, ENCORE GX, ENVISTA, SONIC, SPARK, TRAILBLAZER, TRAX (2011–2024) — 118 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This service bulletin provides a information and diagnostic steps/tips for vehicles that are slow to heat up in cold temperatures.

BUICK — ENCORE GX, ENVISTA, TRAILBLAZER, TRAX (2024) — 4 vehicle combinations

220000 SEATS

This Preliminary information communicates what actions the technician should take when the heated seat enabling feature is missing from the personalization menu.

BUICK — ENVISTA, TRAX (2024) — 2 vehicle combinations

133000 VISIBILITY:POWER WINDOW DEVICES AND CONTROLS

This Preliminary information communicates to the technician the diagnostic direct for inoperative moveable windows.

BUICK — ACADIA, BLAZER, ENCLAVE, TRAVERSE, XT5, XT6 (2020–2024) — 30 vehicle combinations

162600 STRUCTURE:BODY:HATCHBACK/LIFTGATE

This Preliminary information communicates information to help diagnose inoperative rear liftgate logo.

BUICK — LACROSSE, REGAL, SRX, XTS (2010–2019) — 25 vehicle combinations

355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

This Preliminary information communicates additional diagnostics to help isolate source of complaint.

BUICK — 3500HD, 9-3, 9-5, 9-7X, ACADIA, ALLURE, ASTRA, ATS, ATS-V, AURA, AURA HYBRID, AVALANCHE, AVALANCHE 1500, AVALANCHE 2500, AVEO, BLAZER, BLAZER EV, BOLT EUV, BOLT EV, C SERIES, C3500, C4500, C5500, C6500, C7500, C8500, CAMARO, CANYON, CAPRICE, CAPRICE POLICE PURSUIT, CAPTIVA, CAPTIVA SPORT, CASCADA, CITY EXPRESS, COBALT, COBALT SS, COLORADO, CORVETTE, CORVETTE ZR1, CRUZE, CT4, CT5, CT6, CTS, CTS-V, DTS, ELR, ENCLAVE, ENCORE, ENCORE GX, ENVISION, ENVISTA, ENVOY, ENVOY 360, EQUINOX, EQUINOX EV, ESCALADE, ESCALADE ESV, ESCALADE EXT, ESCALADE EXT 1500, ESCALADE HYBRID, EXPRESS, EXPRESS 1500, EXPRESS 2500, EXPRESS 3500, EXPRESS 4500, EXPRESS CUTAWAY, EXPRESS CUTAWAY VAN, G VAN BUS, G3, G3500, G4500, G5, G6, G8, GT, H2, H2 SUT, H3, H3 SUT, HHR, HUMMER EV, IMPALA, LACROSSE, LESABRE, LUCERNE, LUMINA, LYRIQ, MALIBU, MALIBU ECO, MALIBU HYBRID, MONTANA, MONTE CARLO, N300, N300 MAX, OUTLOOK, PURSUIT, REGAL, REGAL TOURX, S10, SAVANA, SAVANA 1500, SAVANA 2500, SAVANA 3500, SIERRA 1500, SIERRA 2500, SIERRA 3500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SILVERADO 5500HD, SILVERADO 6500HD, SILVERADO EV, SILVERADO LT, SKY, SOLSTICE, SONIC, SPARK, SPARK EV, SRX, SS, STS, SUBURBAN, SUBURBAN 1500, SUBURBAN 2500, T SERIES, T6500, T7500, T8500, TAHOE, TAHOE HYBRID, TAHOE POLICE PURSUIT, TERRAIN, TOPKICK, TORRENT, TRAILBLAZER, TRAILBLAZER 360, TRAVERSE, TRAX, UPLANDER, VERANO, VIBE, VOLT, VUE, VUE HYBRID, W-SERIES, W3500, W4500, W5500, XLR, XT4, XT5, XT6, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON HYBRID, YUKON XL, YUKON XL 1500, YUKON XL 2500 (2009–2024) — 1017 vehicle combinations

160000 STRUCTURE

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

BUICK — ENCORE GX, MALIBU, TRAILBLAZER (2019–2024) — 15 vehicle combinations

100000 POWER TRAIN

This Preliminary information communicates the process for recording transmission noises using the PicoScope For review

BUICK — ACADIA, BLAZER, ENCLAVE, EQUINOX, MALIBU, TERRAIN, TRAVERSE, XT4, XT5, XT6 (2022–2024) — 102 vehicle combinations

110000 ELECTRICAL SYSTEM

This engineering information (EI) s requesting information from technicians to perform the check list provided and contact the engineer listed in regard to Melted Burn Marks and/or Smoke Smell Coming from the Height Adjuster Motor Under the

BUICK — ENCORE GX (2020) — 2 vehicle combinations

060000 ENGINE AND ENGINE COOLING

Special Coverage - Certain 2020 model year Buick Encore GX vehicles, equipped with a 1.2L engine, may have a condition that could cause the turbocharger to fail. If this condition occurs, the Malfunction Indicator Lamp (Check Engine Light)

BUICK — ACADIA, ENCLAVE, TRAVERSE (2017–2024) — 75 vehicle combinations

134000 VISIBILITY:SUN/MOON ROOF ASSEMBLY

This technical bulletin provides a procedure to correct the condition Sunroof Wind / Air Deflector Inoperative.

BUICK — ACADIA, BLAZER, BOLT EUV, BOLT EV, CAMARO, CORVETTE, CT4, CT5, CT6, ENCLAVE, ENCORE GX, ENVISION, EQUINOX, MALIBU, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SUBURBAN, TAHOE, TERRAIN, TRAILBLAZER, TRAVERSE, XT4, XT5, XT6, YUKON, YUKON XL (2021–2023) — 74 vehicle combinations

353600 EQUIPMENT:ELECTRICAL:INFOTAINMENT

This PI states that a vehicle may exhibit a concern of the cross traffic alert indicators not displaying on the radio screen. While this is a customer dissatisfier, it does not pose a safety concern due to the fact that the customer will st

BUICK — ACADIA, ALERO, ALLURE, ASTRO, ATS, AURA, AURORA, AVALANCHE, AVALANCHE 1500, AZTEK, BLAZER, BOLT EV, BONNEVILLE, BRAVADA, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, CASCADA, CAVALIER, CENTURY, CITY EXPRESS, COBALT, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, DEVILLE, DTS, ELDORADO, ELR, ENCLAVE, ENCORE, ENVISION, ENVOY, EQUINOX, ESCALADE, ESCALADE ESV, EXPRESS, EXPRESS 1500, EXPRESS 2500, EXPRESS 3500, EXPRESS 4500, EXPRESS CUTAWAY VAN, FIREBIRD, G3, G4, G5, G6, GRAND AM, GRAND PRIX, H2, H3, HHR, IMPALA, INTRIGUE, ION, JIMMY, JIMMY CLASSIC, LACROSSE, LESABRE, LUCERNE, LUMINA, MALIBU, METRO, MONTANA, MONTE CARLO, OUTLOOK, P SERIES, PARK AVENUE, PRIZM, RAINIER, REGAL, RELAY, RENDEZVOUS, S10, SAFARI, SAVANA, SAVANA 2500, SAVANA 3500, SEVILLE, SIERRA 1500, SIERRA 1500 HD, SIERRA 2500, SIERRA 2500 HD, SIERRA 3500, SILHOUETTE, SILVERADO 1500, SILVERADO 1500 HD, SILVERADO 2500, SILVERADO 2500 HD, SILVERADO 3500, SILVERADO LT, SKY, SOLSTICE, SONIC, SONOMA, SPARK, SRX, SS, SSR, STS, SUBURBAN, SUNFIRE, TAHOE, TERRAIN, TERRAZA, TORRENT, TRACKER, TRAILBLAZER, TRAVERSE, TRAX, UPLANDER, VENTURE, VERANO, VIBE, VOLT, VUE, XLR, XT4, XT5, XT6, XTS, YUKON (2000–2022) — 1034 vehicle combinations

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