Technical Service Bulletins (TSB)

BUICK — CORVETTE, CT4, CT5, ENVISION, ESCALADE, SUBURBAN, TAHOE, YUKON (2020–2021) — 22 vehicle combinations

110000 ELECTRICAL SYSTEM

This Preliminary information communicates a parts restriction is in place for the Body Control Module on 2020 Cadillac CT4, CT5, Chevrolet Corvette, Suburban, Tahoe and GMC Yukon.

BUICK — CORVETTE, ENVISION, XT4 (2020–2021) — 6 vehicle combinations

060000 ENGINE (PWS)

This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Check Engine Lamp illuminated on the Driver Information Center (DIC) and/or poor f

BUICK — 3500, 4500, 4500HD, 5500HD, ACADIA, ALERO EXPORT, ASTRO, ATS, AVALANCHE, AVALANCHE 1500, AVALANCHE 2500, AVEO, B7, B7 MEDIUM DUTY, BLAZER, BOLT EV, C SERIES, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, CASCADA, CATERA, CAVALIER, CENTURY, CHEVY VAN, CHEYENNE, CITY EXPRESS, CLASSIC, COBALT, COLORADO, CONVENTIONAL, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, CTS-V, DEVILLE, DTS, ELDORADO, ELR, ENCLAVE, ENCORE, ENCORE GX, ENVISION, ENVOY, ENVOY XL, ENVOY XUV, EPICA, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, ESCALADE EXT 1500, EXPRESS, F SERIES, G SERIES, G VAN BUS, GM, H SERIES, HHR, IMPALA, JIMMY, JIMMY CLASSIC, L SERIES, LACROSSE, LESABRE, LOW CAB FORWARD 6500, LUCERNE, LUMINA, M SERIES, M VAN, M/L VAN, MALIBU, METRO, MONTE CARLO, N300, N300 MAX, OPTRA, ORLANDO, P SERIES, PARK AVENUE, PRIZM, RAINIER, REGAL, RENDEZVOUS, RIVIERA, S10, SAFARI, SAFARI (GMC), SAVANA, SEVILLE, SIERRA 1500, SIERRA 2500, SIERRA DENALI, SILVERADO 1500, SILVERADO 1500 HD, SILVERADO 2500, SILVERADO 2500 HD, SILVERADO 3500, SILVERADO 3500 HD, SILVERADO 4500HD, SONIC, SONOMA, SPARK, SPARK EV, SRX, SS, SSR, STS, SUBURBAN, T SERIES, TAHOE, TERRAIN, TERRAZA, TOPKICK, TRACKER, TRAILBLAZER, TRANS SPORT, TRAVERSE, TRAX, UPLANDER, V SERIES, VENTURE, VERANO, VOLT, W SERIES, W-SERIES, XLR, XT4, XT5, XT6, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL (2000–2021) — 2048 vehicle combinations

071410 FUEL SYSTEM, GASOLINE:STORAGE:EVAPORATIVE EMISSIONS:CANISTER

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 — CORVETTE, CT4, CT5, ENVISION, SUBURBAN, TAHOE, YUKON, YUKON XL (2021) — 8 vehicle combinations

353610 EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE

Service Update. Certain vehicles, equipped with an Infotainment System, may have a condition during cold temperature conditions where the Infotainment screen is blacked out. Dealers will reprogram the radio.

BUICK — BLAZER, ENCLAVE, TRAVERSE, XT5, XT6 (2021) — 15 vehicle combinations

130000 VISIBILITY

This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the A/C not cooling the vehicle cabin and/or the A/C air is not cold coming

BUICK — ENCORE GX, TRAILBLAZER (2020–2022) — 10 vehicle combinations

010000 STEERING

This Preliminary information communicates to the dealer if there is a Service Power Steering message illuminated on Driver Information Center (DIC). There will be no driveability or steering related issues other than the message. Upon a GDS

BUICK — 9-7X, ACADIA, ALERO, ASTRA, ASTRO, ATS, AURA, AURORA, AVALANCHE, AVALANCHE 1500, AVALANCHE 2500, AVEO, AZTEK, B7, BLAZER, BOLT EV, BONNEVILLE, BRAVADA, C SERIES, CAMARO, CANYON, CAPRICE, CAPTIVA, CASCADA, CATERA, CAVALIER, CENTURY, CITY EXPRESS, CLASSIC, COBALT, COLORADO, CONVENTIONAL, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, CTS-V, DEVILLE, DTS, ELDORADO, ELR, ENCLAVE, ENCORE, ENCORE GX, ENVISION, ENVOY, ENVOY XL, ENVOY XUV, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, ESCALADE EXT 1500, EXPRESS, FIREBIRD, G SERIES, G VAN BUS, G3, G5, G6, G8, GM, GRAND AM, GRAND PRIX, GTO, H SERIES, H2, H3, HHR, IMPALA, INTRIGUE, ION, JIMMY, JIMMY CLASSIC, L SERIES, L200, L300, LACROSSE, LESABRE, LUCERNE, LW200, M SERIES, M VAN, M/L VAN, MALIBU, METRO, MONTANA, MONTANA EXT, MONTE CARLO, OUTLOOK, P SERIES, PARK AVENUE, PRIZM, PURSUIT, RAINIER, REGAL, RELAY, RENDEZVOUS, S10, SAFARI, SAVANA, SEVILLE, SIERRA 1500, SIERRA 2500, SIERRA 3500, SIERRA DENALI, SILHOUETTE, SILVERADO 1500, SILVERADO 1500 HD, SILVERADO 2500, SILVERADO 2500 HD, SILVERADO 3500, SILVERADO 3500 HD, SILVERADO 4500HD, SKY, SL, SOLSTICE, SONIC, SONOMA, SPARK, SPARK EV, SRX, SS, SSR, STS, SUBURBAN, SUNFIRE, T SERIES, TAHOE, TERRAIN, TERRAZA, TOPKICK, TORRENT, TRACKER, TRAILBLAZER, TRANS SPORT, TRAVERSE, TRAX, UPLANDER, VENTURE, VERANO, VIBE, VOLT, VUE, W-SERIES, XLR, XT4, XT5, XT6, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL (1994–2021) — 1100 vehicle combinations

350000 EQUIPMENT

This service bulletin provides information for dealers on how to submit a product information report (PIR) (Canada Only).

BUICK — 3500, 4500, 4500HD, 5500HD, 9-7X, ACADIA, ASTRA, ATS, AURA, AVALANCHE, AVALANCHE 1500, AVALANCHE 2500, AVEO, BLAZER, BOLT EV, C SERIES, CAMARO, CANYON, CAPRICE, CAPTIVA, CASCADA, CITY EXPRESS, CLASSIC, COBALT, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, CTS-V, DTS, ELR, ENCLAVE, ENCORE, ENCORE GX, ENVISION, ENVOY, ENVOY XL, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, ESCALADE EXT 1500, EXPRESS, G VAN BUS, G3, G5, G6, G8, GRAND PRIX, GTO, H2, H3, HHR, IMPALA, ION, LACROSSE, LESABRE, LUCERNE, MALIBU, MONTANA, MONTE CARLO, N300, OUTLOOK, PURSUIT, RAINIER, REGAL, RELAY, RENDEZVOUS, SAVANA, SIERRA 1500, SIERRA 2500, SIERRA 3500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SILVERADO 5500HD, SILVERADO 6500HD, SKY, SOLSTICE, SONIC, SPARK, SPARK EV, SRX, SS, SSR, STS, SUBURBAN, T SERIES, TAHOE, TERRAIN, TERRAZA, TOPKICK, TORRENT, TRAILBLAZER, TRAVERSE, TRAX, UPLANDER, VERANO, VIBE, VOLT, VUE, W-SERIES, XLR, XT4, XT5, XT6, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL (2006–2021) — 771 vehicle combinations

350000 EQUIPMENT

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

BUICK — ACADIA, ENVISION, EQUINOX, MALIBU, TRAVERSE (2021) — 10 vehicle combinations

130000 VISIBILITY

Customer Satisfaction Program. Certain vehicles were sold and delivered to customers without the originally invoiced accessory inside rearview mirror with garage door opener switches. Customers may either schedule an appointment to have t

BUICK — ACADIA, ENCLAVE, SIERRA 1500, SILVERADO 1500, TRAVERSE (2020–2021) — 10 vehicle combinations

110000 ELECTRICAL SYSTEM

This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Loss of Power, Instrument Panel Cluster (IPC) Gauges are Inoperative and/or Fluctu

BUICK — 3500, 4500 SERIES, 4500HD, 5500HD, 5500XD, 9-3, 9-5, 9-7X, ACADIA, ALERO, ALERO EXPORT, ASTRA, ASTRO, ATS, AURA, AURORA, AVALANCHE, AVALANCHE 1500, AVALANCHE 2500, AVEO, AZTEK, B7, B7 MEDIUM DUTY, BLAZER, BOLT EV, BONNEVILLE, BRAVADA, C SERIES, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, CASCADA, CATERA, CAVALIER, CENTURY, CHEVY VAN, CHEYENNE, CITY EXPRESS, CLASSIC, COBALT, COLORADO, CONVENTIONAL, CORVETTE, CRUZE, CT6, CTS, CTS-V, DEVILLE, DTS, ELDORADO, ELR, ENCLAVE, ENCORE, ENVISION, ENVOY, ENVOY XL, ENVOY XUV, EPICA, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, ESCALADE EXT 1500, EXPRESS, F SERIES, FIREBIRD, G SERIES, G VAN BUS, G3, G5, G6, G8, GM, GRAND AM, GRAND PRIX, GTO, H SERIES, H2, H3, HHR, IMPALA, INTRIGUE, ION, JIMMY, JIMMY CLASSIC, L SERIES, L200, L300, LACROSSE, LESABRE, LUCERNE, LUMINA, LW200, M SERIES, M VAN, M/L VAN, MALIBU, METRO, MONTANA, MONTANA EXT, MONTE CARLO, N300, N300 MAX, OPTRA, ORLANDO, OUTLOOK, P SERIES, PARK AVENUE, PRIZM, PURSUIT, RAINIER, REGAL, RELAY, RENDEZVOUS, RIVIERA, S10, SAFARI, SAFARI (GMC), SAVANA, SEVILLE, SIERRA 1500, SIERRA 2500, SIERRA DENALI, SILHOUETTE, SILVERADO 1500, SILVERADO 1500 HD, SILVERADO 2500, SILVERADO 2500 HD, SILVERADO 3500, SILVERADO 3500 HD, SKY, SL, SOLSTICE, SONIC, SONOMA, SPARK, SPARK EV, SRX, SS, SSR, STS, SUBURBAN, SUNFIRE, T SERIES, TAHOE, TERRAIN, TERRAZA, TOPKICK, TORRENT, TRACKER, TRAILBLAZER, TRANS SPORT, TRAVERSE, TRAX, UPLANDER, V SERIES, VENTURE, VERANO, VIBE, VOLT, VUE, W SERIES, W-SERIES, XLR, XT5, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL (2000–2018) — 2168 vehicle combinations

160000 STRUCTURE

This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the

BUICK — CORVETTE, CT4, CT5, ENVISION, ESCALADE ESV, SUBURBAN, TAHOE, YUKON XL (2020–2021) — 11 vehicle combinations

110000 ELECTRICAL SYSTEM

This Preliminary information communicates the Radio may stay on after ignition off and door opened if there is an Over The Air update pending and to review SI document ID 5778263 for Over The Air update description and operation.

BUICK — ENVISION (2021)

110000 ELECTRICAL SYSTEM

This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Malfunction Indicator Lamp (MIL) Illuminated on Driver Information Center (DIC), D

BUICK — 3500, 4500HD, 5500HD, 9-5, ACADIA, ASTRA, ATS, AURA, AVALANCHE, AVEO, BOLT EV, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, CASCADA, CHEYENNE, CITY EXPRESS, COBALT, COLORADO, CORVETTE, CRUZE, CT6, CTS, CTS-V, DTS, ELR, ENCLAVE, ENCORE, ENVISION, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, EXPRESS, G VAN BUS, G3, G5, G6, G8, H2, H3, HHR, IMPALA, LACROSSE, LUCERNE, MALIBU, N300, N300 MAX, ORLANDO, OUTLOOK, REGAL, S10, SAVANA, SIERRA 1500, SIERRA 2500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SKY, SOLSTICE, SONIC, SPARK, SPARK EV, SRX, SS, STS, SUBURBAN, T SERIES, TAHOE, TERRAIN, TOPKICK, TRAILBLAZER, TRAVERSE, TRAX, VERANO, VIBE, VOLT, VUE, W-SERIES, XT5, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL (2010–2018) — 418 vehicle combinations

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

BUICK — ENCORE GX, TRAILBLAZER (2020–2021) — 3 vehicle combinations

063140 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

Emission Recall. Certain vehicles with a 1.2L engine (RPO LIH) may have received incorrect catalytic converter parts that do not meet all emission system requirements. Dealers are to inspect the catalytic converter and replace if the corre

BUICK — ENCLAVE, TRAVERSE (2020–2021) — 4 vehicle combinations

060000 ENGINE (PWS)

This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the A/C not blowing cold air. Engineering is request pictures.

BUICK — ATS, CAMARO, CORVETTE, CT4, CT5, CTS, CTS-V, REGAL, SS (2012–2021) — 42 vehicle combinations

190000 TIRES

This service bulletin provides information on summer tire performance and tire cold weather cracking.

BUICK — ENCLAVE, TRAVERSE (2019–2021) — 18 vehicle combinations

220000 SEATS

This technical bulletin provides a procedure to repair a condition of Squeak, Rattle or Creak Noise Originating from Second Row Seat Area by following the procedure outlined within the bulletin.

BUICK — ACADIA, ATS, CAMARO, CANYON, CT6, CTS, ENVISION, EQUINOX, IMPALA, LACROSSE, MALIBU, REGAL, TERRAIN, TRAVERSE, XT5, XTS (2016–2019) — 120 vehicle combinations

060000 ENGINE (PWS)

This technical bulletin provides a procedure to seal the bedplate bolt #621 if found the cause of the oil leak.

BUICK — CORVETTE, CT4, CT5, ENVISION, ESCALADE, ESCALADE ESV, SUBURBAN, TAHOE, YUKON, YUKON XL (2020–2021) — 13 vehicle combinations

350000 EQUIPMENT

This engineering information (EI) requests dealership personnel involve GM Engineering in the event an Owner is in Receipt of a PAI (Proactive Alert Identifier) "SAC003" and/or the Dealer is informed of excessive Parasitic Drains on an in-i

BUICK — ACADIA, ATS, BLAZER, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, COLORADO, CORVETTE, CT5, CT6, CTS, CTS-V, ENCLAVE, EQUINOX, EXPRESS, IMPALA, LACROSSE, SRX, TERRAIN, TRAVERSE, XT5, XT6, XTS (2010–2021) — 648 vehicle combinations

060000 ENGINE (PWS)

This service bulletin provides diagnostic information for the technician regarding a customer concern of engine overheating, cooling system contaminated with engine oil.

BUICK — ENVISION (2021) — 2 vehicle combinations

180000 VEHICLE SPEED CONTROL

This Preliminary information communicates there may be a wind noise originating from either front door due to a missing / mispositioned seal.

BUICK — CORVETTE, CT4, CT5, ENVISION, ESCALADE, SUBURBAN, TAHOE, YUKON (2020–2021) — 22 vehicle combinations

110000 ELECTRICAL SYSTEM

This Preliminary information communicates a parts restriction is in place for the Body Control Module on 2020 Cadillac CT4, CT5, Chevrolet Corvette, Suburban, Tahoe and GMC Yukon.

BUICK — ACADIA, BLAZER, ENCLAVE, TRAVERSE, XT5, XT6 (2020–2021) — 18 vehicle combinations

060000 ENGINE (PWS)

This service bulletin provides repair information to correct a customer concern of a Check Engine Light Displayed on Driver Information Center (DIC), Engine Cooling Fan Windmilling, DTC P0494 Set.

BUICK — ATS, COBALT, CRUZE, CTS, ENCORE, EXPRESS, HHR, MALIBU, REGAL, SAVANA, SIERRA 1500, SIERRA DENALI, SILVERADO 1500, SOLSTICE, SONIC, SRX, TOPKICK, TRAX, VERANO, XTS (2008–2014) — 136 vehicle combinations

061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER

Damaged, Disassembled or Improperly Packaged Turbochargers Returned to Warranty Part Center A Service Agent (Dealer) during vehicle service may need to replace an engine turbocharger (TC). Any turbocharger that is returned to the Warra