Technical Service Bulletins (TSB)

BUICK — ACADIA, BLAZER, CAMARO, CANYON, COLORADO, CT4, CT5, ENCLAVE, ENCORE GX, ENVISION, EQUINOX, MALIBU, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SUBURBAN, TAHOE, TERRAIN, TRAILBLAZER, TRAVERSE, XT5, XT6, YUKON, YUKON XL (2022–2023) — 38 vehicle combinations

220000 SEATS

Customer Satisfaction Program. Due to the industry-wide semiconductor shortage, the front heated/ventilated seats, front heated seats, or rear heated seats are not functional on certain 2022-2023 model year vehicles listed above, built beg

BUICK — 3500, 4500, 4500HD, 4500XD, 5500HD, 5500XD, 6500HD, 6H, 7H, ACADIA, ALERO EXPORT, ALLURE, ASTRO, ATS, ATS-V, AVALANCHE, AVALANCHE 1500, AVALANCHE 2500, AVEO, B SERIES, B6 MEDIUM DUTY, B7, B7 MEDIUM DUTY, BEAUVILLE, BERETTA, BLAZER, C SERIES, C10, C3500, C4500, C5500, C6500, C6H042, C7500, C8500, CAMARO, CANYON, CAPRICE, CAPRICE POLICE PURSUIT, CAPTIVA, CAPTIVA SPORT, CASCADA, CATERA, CAVALIER, CENTURY, CHEVY VAN, CHEYENNE, CITY EXPRESS, CLASSIC, COBALT, COBALT SS, COLORADO, CONVENTIONAL, CORVETTE, CORVETTE Z06, CORVETTE ZR1, CRUZE, CT4, CT5, CT6, CTS, CTS-V, DENALI, DEVILLE, DIAMOND EDITION, DTS, ELDORADO, ENCLAVE, ENCORE, ENCORE GX, ENVISION, ENVOY, ENVOY 360, ENVOY DENALI, ENVOY DENALI XL, ENVOY XL, ENVOY XL 370, ENVOY XUV, EPICA, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, ESCALADE EXT 1500, ESCALADE HYBRID, EXPLORER, EXPRESS, EXPRESS 1500, EXPRESS 2500, EXPRESS 3500, EXPRESS 4500, EXPRESS CUTAWAY, EXPRESS CUTAWAY VAN, F SERIES, F6, F7, G SERIES, G VAN, G VAN BUS, G1500, G25, G2500, G30, G35, G3500, G4500, GM, H SERIES, HHR, IMPALA, IMPALA (GMX 211), INCOMPLETE/CUTAWAY C3, JIMMY, JIMMY CLASSIC, L SERIES, L VAN, LACROSSE, LESABRE, LOW CAB 3500, LOW CAB 4500, LOW CAB 5500, LOW CAB FORWARD 6500, LUCERNE, LUMINA, LUMINA APV, M SERIES, M VAN, M/L, M/L SERIES, M/L VAN, MALIBU, MALIBU CLASSIC, MALIBU ECO, MALIBU HYBRID, MALIBU MAXX, METRO, MONTE CARLO, MOTOR HOME, N300, N300 MAX, ONIX, OPTRA, ORLANDO, P SERIES, PARK AVENUE, PRIZM, R SERIES, RAINIER, REGAL, REGAL TOURX, RENDEZVOUS, RIVIERA, ROADTREK, S/T BLAZER, S/T JIMMY, S10, S15, SAFARI, SAFARI (GMC), SANANA, SAVANA, SAVANA 1500, SAVANA 2500, SAVANA 3500, SEVILLE, SIERRA 1500, SIERRA 1500 HD, SIERRA 2500, SIERRA 2500 HD, SIERRA 3500, SIERRA 3500 HD, SIERRA DENALI, SILVERADO 1500, SILVERADO 1500 HD, SILVERADO 2500, SILVERADO 2500 HD, SILVERADO 3500, SILVERADO 3500 HD, SILVERADO 4500HD, SILVERADO 5500HD, SILVERADO 6500HD, SKYLARK, SLS, SONIC, SONOMA, SONOMA CREW, SPARK, SRX, SS, SSR, STS, SUBURBAN, SUBURBAN 1500, SUBURBAN 2500, T SERIES, T4500, T6500, T7500, T8500, TAHOE, TAHOE HYBRID, TAHOE POLICE PURSUIT, TERRAIN, TERRAZA, TOPKICK, TOPKICK 6500, TOPKICK 8500, TRACKER, TRAILBLAZER, TRAILBLAZER 360, TRAILBLAZER EXT, TRAILBLAZER EXT 370, TRANS SPORT, TRAVERSE, TRAX, UPLANDER, V SERIES, VAN, VANDURA, VENTURE, VERANO, W SERIES, W SERIES C3 3500, W-SERIES, W3500, W4, W4500, W5500, W5500HD, XLR, XT4, XT5, XT6, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON HYBRID, YUKON XL, YUKON XL 1500, YUKON XL 2500, YUKON XL DENALI (2000–2023) — 2078 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.

BUICK — 3500, 3500HD, 4500, 4500HD, 4500XD, 5500HD, 5500XD, 6500HD, 6H, 7H, 88, 9-2X, 9-3, 9-5, 9-7X, 98, ACADIA, ACHIEVA, ALERO, ALERO EXPORT, ALLURE, ASTRA, ASTRO, ATS, ATS-V, AURA, AURA HYBRID, AURORA, AVALANCHE, AVALANCHE 1500, AVALANCHE 2500, AVEO, AZTEK, B SERIES, B6 MEDIUM DUTY, B7, B7 MEDIUM DUTY, BEAUVILLE, BERETTA, BLAZER, BOLT EV, BONNEVILLE, BRAVADA, BRIGHTDROP EV600, C SERIES, C10, C3500, C4500, C5500, C6500, C6H042, C7500, C8500, CAMARO, CANYON, CAPRICE, CAPRICE POLICE PURSUIT, CAPTIVA, CAPTIVA SPORT, CASCADA, CATERA, CAVALIER, CENTURY, CHEVY VAN, CHEYENNE, CITY EXPRESS, CLASSIC, COBALT, COBALT SS, COLORADO, CONVENTIONAL, CORVETTE, CORVETTE Z06, CORVETTE ZR1, CRUZE, CT4, CT5, CT6, CTS, CTS-V, CUTLASS, DENALI, DEVILLE, DIAMOND EDITION, DTS, ELDORADO, ENCLAVE, ENCORE, ENCORE GX, ENVISION, ENVISTA, ENVOY, ENVOY 360, ENVOY DENALI, ENVOY DENALI XL, ENVOY XL, ENVOY XL 370, ENVOY XUV, EPICA, EQUINOX, EQUINOX EV, ESCALADE, ESCALADE ESV, ESCALADE EXT, ESCALADE EXT 1500, ESCALADE HYBRID, EXPLORER, EXPRESS, EXPRESS 1500, EXPRESS 2500, EXPRESS 3500, EXPRESS 4500, EXPRESS CUTAWAY, EXPRESS CUTAWAY VAN, F SERIES, F6, F7, FIREBIRD, G SERIES, G VAN, G VAN BUS, G1500, G25, G2500, G3, G30, G35, G3500, G4, G4500, G5, G6, G8, GRAND AM, GRAND PRIX, GT, GTO, H SERIES, H1, H2, H2 SUT, H3, H3 SUT, H4, HHR, HUMMER EV, IMPALA, IMPALA (GMX 211), INCOMPLETE/CUTAWAY C3, INTRIGUE, ION, JIMMY, JIMMY CLASSIC, L SERIES, L VAN, L200, L300, LACROSSE, LESABRE, LOW CAB 3500, LOW CAB 4500, LOW CAB 5500, LOW CAB FORWARD 6500, LS, LUCERNE, LUMINA, LUMINA APV, LW200, LYRIQ, M SERIES, M VAN, M/L, M/L SERIES, M/L VAN, MALIBU, MALIBU CLASSIC, MALIBU ECO, MALIBU HYBRID, MALIBU MAXX, METRO, MONTANA, MONTE CARLO, MOTOR HOME, N300, N300 MAX, ONIX, OPTRA, ORLANDO, OUTLOOK, P SERIES, PARK AVENUE, PRIZM, PURSUIT, R SERIES, RAINIER, REGAL, REGAL TOURX, RELAY, RENDEZVOUS, RIVIERA, ROADTREK, S/T BLAZER, S/T JIMMY, S10, S15, SAFARI, SAFARI (GMC), SAVANA, SAVANA 1500, SAVANA 2500, SAVANA 3500, SC, SEVILLE, SIERRA 1500, SIERRA 1500 HD, SIERRA 2500, SIERRA 2500 HD, SIERRA 3500, SIERRA 3500 HD, SIERRA DENALI, SILHOUETTE, SILVERADO 1500, SILVERADO 1500 HD, SILVERADO 2500, SILVERADO 2500 HD, SILVERADO 3500, SILVERADO 3500 HD, SILVERADO 4500HD, SILVERADO 5500HD, SILVERADO 6500HD, SILVERADO EV, SKY, SKYLARK, SL, SLS, SOLSTICE, SONIC, SONOMA, SONOMA CREW, SPARK, SRX, SS, SSR, STS, SUBURBAN, SUBURBAN 1500, SUBURBAN 2500, SUNBIRD, SUNFIRE, SW, T SERIES, T4500, T6500, T7500, T8500, TAHOE, TAHOE HYBRID, TAHOE POLICE PURSUIT, TERRAIN, TERRAZA, TOPKICK, TOPKICK 6500, TOPKICK 8500, TORRENT, TRACKER, TRAILBLAZER, TRAILBLAZER 360, TRAILBLAZER EXT, TRAILBLAZER EXT 370, TRANS AM, TRANS SPORT, TRAVERSE, TRAX, UPLANDER, V SERIES, VAN, VANDURA, VECTRA, VENTURE, VERANO, VIBE, VOLT, VUE, VUE HYBRID, W SERIES, W SERIES C3 3500, W-SERIES, W3500, W4, W4500, W5500, W5500HD, XLR, XT4, XT5, XT6, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON HYBRID, YUKON XL, YUKON XL 1500, YUKON XL 2500, YUKON XL DENALI (2000–2024) — 3444 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.

BUICK — CASCADA, ENCLAVE, ENCORE, ENVISION, LACROSSE, LESABRE, LUCERNE, REGAL, REGAL TOURX, VERANO (2010–2019) — 56 vehicle combinations

114000 ELECTRICAL SYSTEM:WIRING

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

BUICK — ENCORE GX, TRAILBLAZER (2020–2023) — 7 vehicle combinations

060000 ENGINE AND ENGINE COOLING

Service Update. In certain vehicles, if the Engine Control Module (ECM) sets the DTC P0521 (Engine Oil Pressure Sensor Performance), the ECM cannot clear the permanent status of this DTC. If the ECM had previously set a DTC P0521 and the

BUICK — ENCLAVE, TRAVERSE, XT5, XT6 (2022–2023) — 8 vehicle combinations

220000 SEATS

This Preliminary information communicates that the personalization menu for a remote start vs push button start is not the same. On a remote start there is an option to turn of auto heated seats. On a push button start that option is not th

BUICK — ACADIA, CT4, CT5, ENCLAVE, SUBURBAN, TRAVERSE, XT4 (2022–2023) — 14 vehicle combinations

220000 SEATS

Customer Satisfaction Program. Due to the industry-wide semiconductor shortage, the front driver and passenger seat cushion ventilation blowers are not functional on certain 2022-2023 model year vehicles listed above, built beginning March

BUICK — ACADIA, ATS, BLAZER, BOLT EV, CANYON, COLORADO, CT6, CTS, ENCLAVE, EQUINOX, ESCALADE ESV, MALIBU, SIERRA 1500, SIERRA 2500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SUBURBAN, TAHOE, TERRAIN, TRAVERSE, VOLT, XT4, XT5, XT6, XTS, YUKON DENALI, YUKON XL (2013–2023) — 164 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 — ACADIA, BLAZER, BOLT EUV, BOLT EV, CAMARO, ENCLAVE, ENCORE GX, EQUINOX, MALIBU, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, TERRAIN, TRAILBLAZER, TRAVERSE, XT4, XT5, XT6 (2021–2023) — 120 vehicle combinations

110000 ELECTRICAL SYSTEM

This service bulletin provides repair information to correct a customer concern of Rear View Camera Display Gridlines Dim.

BUICK — ENVISION (2021–2023) — 3 vehicle combinations

280000 BACK OVER PREVENTION

This Preliminary information communicates that a customer may notice that the gridlines on the backup camera are very dim. They may mention that this occurred after an OTA update. The dealer technician is advised to perform no repairs. The

BUICK — ENCORE GX, TRAILBLAZER (2020–2023) — 7 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This Preliminary Information communication provides information to the dealer technician related to a Malfunction Indicator Lamp coming on post turbocharger replacement with P0234 (Engine Overboost) set current or in history. It advises the

BUICK — 3500HD, ACADIA, ATS, ATS-V, AVEO, BLAZER, BOLT EUV, BOLT EV, CAMARO, CANYON, CAPRICE, CAPRICE POLICE PURSUIT, CAPTIVA, CASCADA, CITY EXPRESS, COBALT, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, CTS-V, ELR, ENCLAVE, ENCORE, ENCORE GX, ENVISION, ENVISTA, EQUINOX, EQUINOX EV, ESCALADE, ESCALADE ESV, EXPRESS, EXPRESS 2500, EXPRESS 3500, EXPRESS CUTAWAY VAN, G3500, G4500, HUMMER EV, IMPALA, LACROSSE, LYRIQ, MALIBU, MALIBU HYBRID, N300, N300 MAX, ONIX, ORLANDO, 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, SONIC, SPARK, SPARK EV, SRX, SS, SUBURBAN, SUBURBAN 1500, TAHOE, TERRAIN, TRAILBLAZER, TRAVERSE, TRAX, VERANO, VOLT, XT4, XT5, XT6, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL (2017–2024) — 766 vehicle combinations

350000 EQUIPMENT

This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.

BUICK — ACADIA, ATS, AURA, AVALANCHE, BLAZER, BOLT EV, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, CASCADA, CITY EXPRESS, COBALT, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, DTS, ELR, ENCLAVE, ENCORE, ENVISION, EQUINOX, ESCALADE, ESCALADE ESV, EXPRESS, EXPRESS 1500, EXPRESS 2500, EXPRESS 3500, EXPRESS 4500, G5, G6, H3, HHR, IMPALA, LACROSSE, LUCERNE, MALIBU, OUTLOOK, REGAL, SAVANA, SAVANA 2500, SAVANA 3500, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SKY, SOLSTICE, SONIC, SPARK, SRX, SS, STS, SUBURBAN, TAHOE, TERRAIN, TRAILBLAZER, TRAVERSE, TRAX, VERANO, VIBE, VOLT, VUE, XT4, XT5, XT6, XTS, YUKON (2010–2022) — 1014 vehicle combinations

118000 ELECTRICAL SYSTEM:SOFTWARE

This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to sen

BUICK — ENVISION, EQUINOX (2022–2023) — 3 vehicle combinations

220000 SEATS

Customer Satisfaction Program. EPC Update on 2022-2023 Buick Envision

BUICK — CAMARO, CANYON, COLORADO, ENCLAVE, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, TRAVERSE (2022–2023) — 19 vehicle combinations

160000 STRUCTURE

Customer Satisfaction Program. Certain vehicles listed above were manufactured and shipped to the dealer without the hood insulator. Dealers are to install the hood insulator.

BUICK — ACADIA, ATS, AURA, AVALANCHE, BLAZER, BOLT EV, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, CASCADA, CITY EXPRESS, COBALT, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, DTS, ELR, ENCLAVE, ENCORE, ENVISION, EQUINOX, ESCALADE, ESCALADE ESV, EXPRESS, EXPRESS 1500, EXPRESS 2500, EXPRESS 3500, EXPRESS 4500, G5, G6, H3, HHR, IMPALA, LACROSSE, LUCERNE, MALIBU, OUTLOOK, REGAL, SAVANA, SAVANA 2500, SAVANA 3500, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SKY, SOLSTICE, SONIC, SPARK, SRX, SS, STS, SUBURBAN, TAHOE, TERRAIN, TRAILBLAZER, TRAVERSE, TRAX, VERANO, VIBE, VOLT, VUE, XT4, XT5, XT6, XTS, YUKON (2010–2022) — 1014 vehicle combinations

118000 ELECTRICAL SYSTEM:SOFTWARE

This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to sen

BUICK — ENVISION, SIERRA 1500, SILVERADO 1500 (2022) — 6 vehicle combinations

110000 ELECTRICAL SYSTEM

This engineering information (EI) closure ends the need for gathering further information from technicians in regards to the radio staying on after retained accessory power (RAP), low and/or having a dead battery.

BUICK — CRUZE, ENCORE, TRAX (2016–2019) — 20 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This service bulletin provides a procedure to repair the mechanical components and then reprogram the throttle body to prevent the conditions of a rough running engine, MIL Illuminated.

BUICK — ACADIA, ATS, BLAZER, CAMARO, CANYON, CAPRICE, CAPTIVA, COLORADO, CT4, CT5, CT6, CTS, ENCLAVE, EQUINOX, IMPALA, LACROSSE, SRX, TERRAIN, TRAVERSE, XT5, XT6 (2010–2024) — 357 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This informational bulletin advises the tech to validate if oil is leaking into the cooling system and to test and verify were to leak is coming from before replacing all the parts that wouldn't apply to the repair.

BUICK — ACADIA, ENCLAVE, XT5, XT6 (2020–2024) — 41 vehicle combinations

020000 SUSPENSION

This technical bulletin provides a procedure to inspect and if need be, to remove the lower strut isolator to clean and scuff if the spring was rubbing against the fender area.

BUICK — ENCORE GX, TRAILBLAZER (2020–2022) — 5 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This Preliminary Information communication provides information to the dealer technician related to a Malfunction Indicator Lamp coming on post turbocharger replacement with P0234 (Engine Overboost) set current or in history. It advises the

BUICK — 3500, 4500, 4500HD, 4500XD, 5500HD, 5500XD, 6500HD, ACADIA, BLAZER, BOLT EUV, BOLT EV, CAMARO, CANYON, COLORADO, CORVETTE, CT4, CT5, CT6, ENCLAVE, ENCORE, ENCORE GX, ENVISION, EQUINOX, ESCALADE, ESCALADE ESV, EXPRESS, EXPRESS 2500, EXPRESS 3500, HUMMER EV, IMPALA, LACROSSE, LYRIQ, MALIBU, ONIX, REGAL, SAVANA, SIERRA 1500, SIERRA 2500, SIERRA 3500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SILVERADO 5500HD, SILVERADO 6500HD, SONIC, SPARK, SUBURBAN, SUBURBAN 1500, TAHOE, TERRAIN, TRAILBLAZER, TRAVERSE, TRAX, XT4, XT5, XT6, XTS, YUKON, YUKON XL (2020–2023) — 404 vehicle combinations

110000 ELECTRICAL SYSTEM

This service bulletin provides diagnostic/repair information to correct a customer concern of Cellphone not Charging or USB Receptacle Inoperative.

BUICK — ACADIA, BLAZER, BOLT EUV, BOLT EV, CAMARO, CANYON, COLORADO, CORVETTE, CT4, CT5, ENCLAVE, ENCORE, ENCORE GX, ENVISION, ENVISTA, EQUINOX, EQUINOX EV, ESCALADE, ESCALADE ESV, EXPRESS 2500, EXPRESS 3500, EXPRESS CUTAWAY VAN, HUMMER EV, LYRIQ, MALIBU, SAVANA, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SILVERADO 5500HD, SILVERADO 6500HD, SILVERADO EV, SUBURBAN, TAHOE, TERRAIN, TRAILBLAZER, TRAVERSE, TRAX, XT4, XT5, XT6, YUKON, YUKON XL (2023–2024) — 124 vehicle combinations

110000 ELECTRICAL SYSTEM

This warranty administration bulletin provides information for dealers/technicians on System Reset and Connector Reconnect Labor Code Numbers.

BUICK — ENVISION (2021–2022) — 4 vehicle combinations

353000 EQUIPMENT:ELECTRICAL

This Preliminary information communicates an instance where the rear map/reading lamps may come on during vehicle cranking.

BUICK — CORVETTE, CT4, CT5, ENVISION, ESCALADE ESV, SIERRA 1500, SILVERADO 1500, SUBURBAN, TAHOE, YUKON XL (2020–2023) — 31 vehicle combinations

355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

This Preliminary information communicates an issues with the odometer being incorrect after a programming event and how the dealership can resolve the issue.