Technical Service Bulletins (TSB)

BUICK — ACADIA, BLAZER, ENCLAVE, TRAVERSE, XT5, XT6 (2017–2020) — 16 vehicle combinations

030000 SERVICE BRAKES, HYDRAULIC

This technical bulletin provides repair information to correct a customer concern of a rear brake squeal noise.

BUICK — ALLURE, ATS, ATS-V, BLAZER, CAMARO, CAPRICE POLICE PURSUIT, CAPTIVA, CAPTIVA SPORT, COLORADO, CT5, CT6, CTS, ENCLAVE, EQUINOX, IMPALA, LACROSSE, REGAL, SRX, TRAVERSE, XT5, XT6, XTS (2009–2022) — 145 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This service bulletin provides inspection/diagnosis/correction information on a cold start misfire and/or rough idle and DTC P0300 that may also be set.

BUICK — ENCLAVE, TRAVERSE (2021–2022) — 4 vehicle combinations

110000 ELECTRICAL SYSTEM

This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the front door harness connector X500 and/or X600 that results in the door l

BUICK — ENCLAVE, TRAVERSE (2018–2022) — 10 vehicle combinations

063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

This Preliminary information communicates a poor weld or low weld adhesion for the bracket on the Bank 2 front exhaust pipe causing multiple possible concerns and the recommended repairs. Added 2020 MY. Added 2021 Model Year and added all p

BUICK — ACADIA, BLAZER, ENCLAVE, TRAVERSE, XT5, XT6 (2022) — 12 vehicle combinations

100000 POWER TRAIN

This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to vehicles being towed in due to loss of drive.

BUICK — BLAZER, CAMARO, CANYON, COLORADO, ENCORE, ENCORE GX, EQUINOX, MALIBU, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SONIC, TERRAIN, TRAX (2019–2022) — 307 vehicle combinations

110000 ELECTRICAL SYSTEM

This service bulletin provides radio software version 135120 (IOR) update procedures to correct customer concerns of software related issues.

BUICK — CRUZE, ENCORE, SONIC, TRAX (2011–2022) — 35 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This Preliminary information communicates to the technician the need to inspect the induction system for potential restriction and blockage in the induction system creating drive ability issues.

BUICK — ACADIA, ALLURE, ASTRO, ATS, AURA, AVALANCHE, AVALANCHE 1500, AZTEK, BLAZER, BOLT EV, BONNEVILLE, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, CASCADA, CAVALIER, CENTURY, CITY EXPRESS, COBALT, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, DEVILLE, DTS, ELR, ENCLAVE, ENCORE, ENVISION, ENVOY, EQUINOX, ESCALADE, ESCALADE ESV, EXPRESS, EXPRESS 1500, EXPRESS 2500, EXPRESS 3500, EXPRESS 4500, G3, G4, G5, G6, GRAND AM, GRAND PRIX, H2, H3, HHR, IMPALA, ION, JIMMY CLASSIC, LACROSSE, LESABRE, LUCERNE, MALIBU, MONTANA, MONTE CARLO, OUTLOOK, PARK AVENUE, RAINIER, REGAL, RELAY, RENDEZVOUS, SAFARI, SAVANA, SAVANA 2500, SAVANA 3500, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SKY, SOLSTICE, SONIC, SPARK, SRX, SS, SSR, STS, SUBURBAN, SUNFIRE, TAHOE, TERRAIN, TERRAZA, TORRENT, TRAILBLAZER, TRAVERSE, TRAX, UPLANDER, VENTURE, VERANO, VIBE, VOLT, VUE, XLR, XT4, XT5, XT6, XTS, YUKON (2005–2022) — 759 vehicle combinations

134000 VISIBILITY:SUN/MOON ROOF ASSEMBLY

This Preliminary Information communication advises the technician the steps on diagnosing the concern. Customer's sunroof operation intermittent, bind, noise, auto-reverse, and/or water leaks.

BUICK — ENCLAVE (2021) — 2 vehicle combinations

160000 STRUCTURE

Customer Satisfaction Program - certain vehicles may have a condition where both rear wheelhouse and the driver side hem flange have missing sealer. Dealers are to apply the missing sealer.

BUICK — ENCLAVE (2021) — 2 vehicle combinations

160000 STRUCTURE

Customer Satisfaction Program - Certain vehicles may have a condition where both rear wheelhouse flanges have missing sealer. Dealers are to apply the missing sealer

BUICK — ENCLAVE (2021) — 2 vehicle combinations

160000 STRUCTURE

Customer Satisfaction Program. Certain vehicles may have an open hem flange on the drivera??s rear side wheelhouse. Dealers are to apply the missing sealer on the drivera??s side rear wheelhouse.

BUICK — CANYON, COLORADO, ENVISION, EQUINOX, SRX, TERRAIN (2010–2022) — 72 vehicle combinations

030000 BRAKES (PWS)

This preliminary information discusses potential for a code C0010.5A to store in the brake controller which appears to be setting falsely or is induced by the customer.

BUICK — ACADIA, BLAZER, ENCORE GX, ENVISION, TERRAIN, TRAILBLAZER, XT4, XT5, XT6 (2018–2024) — 143 vehicle combinations

100000 POWER TRAIN

This service bulletin provides 9th gear operation information to respond to customers that may comment on transmission shift operation.

BUICK — 3500, 4500, 4500HD, 4500XD, 5500HD, 5500XD, ACADIA, ATS, ATS-V, AVALANCHE, AVALANCHE 1500, AVALANCHE 2500, AVEO, BLAZER, BOLT EUV, BOLT EV, BRIGHTDROP EV600, C3500, CAMARO, CANYON, CAPRICE, CAPRICE POLICE PURSUIT, CAPTIVA, CAPTIVA SPORT, CASCADA, CHEYENNE, CITY EXPRESS, COBALT, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, CTS-V, DENALI, DTS, ELR, ENCLAVE, ENCORE, ENCORE GX, ENVISION, ENVOY, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, ESCALADE HYBRID, EXPRESS, EXPRESS 1500, EXPRESS 2500, EXPRESS 3500, EXPRESS 4500, EXPRESS CUTAWAY, G3500, G4500, HUMMER EV, IMPALA, LACROSSE, LESABRE, LUCERNE, LUMINA, MALIBU, MALIBU ECO, MALIBU HYBRID, N300, N300 MAX, OPTRA, ORLANDO, REGAL, REGAL TOURX, S10, SAVANA, SAVANA 1500, SAVANA 2500, SAVANA 3500, SAVANNA, SIERRA 1500, SIERRA 2500, SIERRA 3500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SILVERADO 5500HD, SILVERADO 6500HD, SONIC, SPARK, SPARK EV, SRX, SS, STS, SUBURBAN, SUBURBAN 1500, TAHOE, TAHOE HYBRID, TAHOE POLICE PURSUIT, TERRAIN, TOPKICK, TRAILBLAZER, TRAVERSE, TRAX, VERANO, VOLT, XT4, XT5, XT6, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON HYBRID, YUKON XL, YUKON XL 1500, YUKON XL 2500 (2012–2022) — 1364 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 — ACADIA, BLAZER, ENCORE GX, ENVISION, EQUINOX, MALIBU, REGAL, TERRAIN, TRAILBLAZER, XT4, XT5, XT6 (2020–2024) — 135 vehicle combinations

100000 POWER TRAIN

This service bulletin provides diagnostic information/procedures to aid the service technician in diagnosing 9T45/50/60 automatic transmissions with low mileage and DTCs current or history related to the control solenoids and valves.

BUICK — ENVISION (2021–2023) — 8 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This technical bulletin provides a procedure to install the cover for conditions of Poor Engine Performance in Extremely Cold Weather Conditions for LSY Engines, Charge Air Cooler Icing, Malfunction Indicator Lamp (MIL) Illuminated with a P

BUICK — 3500, 4500, 4500HD, 4500XD, 5500HD, 5500XD, ACADIA, ATS, ATS-V, AVALANCHE, AVALANCHE 1500, AVALANCHE 2500, AVEO, BLAZER, BOLT EUV, BOLT EV, BRIGHTDROP EV600, C3500, CAMARO, CANYON, CAPRICE, CAPRICE POLICE PURSUIT, CAPTIVA, CAPTIVA SPORT, CASCADA, CHEYENNE, CITY EXPRESS, COBALT, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, CTS-V, DENALI, DTS, ELR, ENCLAVE, ENCORE, ENCORE GX, ENVISION, ENVOY, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, ESCALADE HYBRID, EXPRESS, EXPRESS 1500, EXPRESS 2500, EXPRESS 3500, EXPRESS 4500, EXPRESS CUTAWAY, G3500, G4500, HUMMER EV, IMPALA, LACROSSE, LESABRE, LOW CAB 3500, LOW CAB 4500, LOW CAB 5500, LOW CAB FORWARD 6500, LUCERNE, LUMINA, MALIBU, MALIBU ECO, MALIBU HYBRID, N300, N300 MAX, OPTRA, ORLANDO, REGAL, REGAL TOURX, S10, SAVANA, SAVANA 1500, SAVANA 2500, SAVANA 3500, SAVANNA, SIERRA 1500, SIERRA 2500, SIERRA 3500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SILVERADO 5500HD, SILVERADO 6500HD, SONIC, SPARK, SPARK EV, SRX, SS, STS, SUBURBAN, SUBURBAN 1500, TAHOE, TAHOE HYBRID, TAHOE POLICE PURSUIT, TERRAIN, TOPKICK, TRAILBLAZER, TRAVERSE, TRAX, VERANO, VOLT, XT4, XT5, XT6, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON HYBRID, YUKON XL, YUKON XL 1500, YUKON XL 2500 (2012–2022) — 691 vehicle combinations

980000 UNKNOWN OR OTHER

This informational bulletin provides information on a guide to help reduce repeat visits for the same customer concern.

BUICK — CORVETTE, CT4, CT5, ENVISION, ESCALADE, ESCALADE ESV, SUBURBAN, SUBURBAN 1500, TAHOE, YUKON, YUKON XL (2021–2022) — 23 vehicle combinations

115000 ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM

This service bulletin provides repair information to correct a customer concern of Check Engine MIL Illuminated in DIC Set by Body Control Module with DTC P0607.

BUICK — ENCORE GX, TRAILBLAZER (2020–2024) — 13 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This service bulletin provides information on normal engine characteristics/noise produced by the LIH engine.

BUICK — 3500, 3500HD, 4500, 4500HD, 4500XD, 5500HD, 5500XD, 6500HD, 6H, 7H, 88, 9-2X, 9-3, 9-4X, 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, BONNEVILLE, BRAVADA, 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, ELR, ENCLAVE, ENCORE, ENCORE GX, ENVISION, ENVISTA, 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, EXPRESS SAVANNAH, F SERIES, F6, F7, FIREBIRD, G SERIES, G VAN, G VAN BUS, G1500, G25, G2500, G3, G30, G35, G3500, G4, G4500, G5, G6, G8, GM, GRAND AM, GRAND PRIX, GT, GTO, H SERIES, H1, H2, H2 SUT, H3, H3 SUT, H4, HHR, 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, LW300, 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), SANANA, SAVANA, SAVANA 1500, SAVANA 2500, SAVANA 3500, SAVANNA, 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 LT, 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) — 7048 vehicle combinations

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.

BUICK — 3500, 3500HD, 4500, 4500HD, 4500XD, 5500HD, 5500XD, 6500HD, 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, 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, SPARK, SUBURBAN, SUBURBAN 1500, TAHOE, TERRAIN, TRAILBLAZER, TRAVERSE, TRAX, XT4, XT5, XT6, YUKON, YUKON XL (2022–2024) — 610 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This service bulletin provides information for dealers/technicians on New Labor Operations for Limited Production Option (LPO) Calibrated Accessories.

BUICK — ENCORE GX, TRAILBLAZER (2020–2021) — 4 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This service bulletin provides a procedure to locate and repair a possible loose wire crimp in the engine wiring harness to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated.

BUICK — ACADIA, ATS, BLAZER, CAMARO, CANYON, CAPRICE, CITY EXPRESS, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, ELR, ENCLAVE, ENCORE, ENVISION, EQUINOX, ESCALADE, EXPRESS, IMPALA, LACROSSE, MALIBU, REGAL, SAVANA, SIERRA 1500, SIERRA 2500, SIERRA 3500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SONIC, SPARK, SPARK EV, SRX, SS, SUBURBAN, TAHOE, TERRAIN, TRAVERSE, TRAX, VERANO, VOLT, XT4, XT5, XT6, XTS, YUKON (2010–2022) — 361 vehicle combinations

110000 ELECTRICAL SYSTEM

This Preliminary Information communication provides information to the technician about a no start or another concern after swapping an Engine Control Module or other modules from one vehicle to another. The Global Architecture electrical s

BUICK — ACADIA, BLAZER, CT4, CT5, CT6, ENVISION, XT4, XT5, XT6 (2019–2022) — 25 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This Preliminary information communicates the possibility of the engine running hot or overheating with no DTC's due to inaccurate coolant temperature sensor located on the coolant pump outlet pipe.

BUICK — ACADIA, BLAZER, BOLT EUV, BOLT EV, CAMARO, CT6, ENCLAVE, ENCORE GX, EQUINOX, LACROSSE, SIERRA 1500, SILVERADO 1500, TERRAIN, TRAVERSE, XT4, XT5, XT6 (2019–2022) — 296 vehicle combinations

110000 ELECTRICAL SYSTEM

This service bulletin provides repair information to correct a customer concern of Blue or Black Screen and Service Rear Vision System Message on Radio Display Shifting into Reverse.