Technical Service Bulletins (TSB)

BUICK — ACADIA, BLAZER, CRUZE, ENCLAVE, ENCORE, ENVISION, EQUINOX, LACROSSE, MALIBU, REGAL, TERRAIN, TRAILBLAZER, TRAVERSE, XT4, XT5, XT6 (2017–2021) — 35 vehicle combinations

160000 STRUCTURE

This Preliminary information communicates a work around when only 11 digit PUN (Part Unique Number) is seen on Service Solenoid Body Assembly.

BUICK — LACROSSE, MALIBU, REGAL (2016–2018) — 18 vehicle combinations

060000 ENGINE (PWS)

Special Coverage Adjustment - Certain 2016-2018 model year Chevrolet Malibu, 2017-2018 model year Buick LaCrosse, and 2018 model year Buick Regal vehicles may have a condition which affects the electrical connection to one of the vehicle?s

BUICK — ACADIA, BLAZER, CAMARO, CT6, ENCLAVE, ENCORE, ENCORE GX, SIERRA 1500, SIERRA 2500, SIERRA 3500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, TRAILBLAZER, TRAVERSE, XT4, XT5, XT6 (2020) — 33 vehicle combinations

350000 EQUIPMENT

This Preliminary information communicates information on radio software anamolies and future radio software updates to correct the concern.

BUICK — BLAZER, CRUZE, ENCLAVE, ENCORE, ENVISION, EQUINOX, LACROSSE, MALIBU, REGAL, TERRAIN, TRAVERSE, XT4 (2017–2019) — 23 vehicle combinations

100000 POWER TRAIN

This Preliminary information communicates a possible BCM and/or circuit 5985 concern if DTC P0747 sets during engine shut down when the transmission is in park or neutral when no hydraulic/mechanical transmission concerns are present..

BUICK — ENCORE, TRAILBLAZER (2020–2021) — 2 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This Preliminary information communicates specific directions for the application of room temperature vulcanizing (RTV) sealant to the engine Lower Crankcase Extension during engine oil pan installation.

BUICK — ENCORE, ENCORE GX, TRAILBLAZER (2020–2021) — 10 vehicle combinations

110000 ELECTRICAL SYSTEM

This technical bulletin provides repair information to correct a customer concern of check engine lamp illuminated, DTC P159F 00 set, No Audio.

BUICK — ENCORE, TRAILBLAZER (2020–2021) — 2 vehicle combinations

100000 POWER TRAIN

Service Update - The gear shift lever may have a detent feel between Park and Reverse caused by the fastening bolt that is not fully seated and contacting the shifter housing. Dealers are to inspect the detent feel of the transmission rang

BUICK — 3500, 4500HD, 5500HD, ACADIA, ATS, BLAZER, BOLT EV, CAMARO, CANYON, CAPRICE, CASCADA, CITY EXPRESS, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, ELR, ENCLAVE, ENCORE, ENVISION, EQUINOX, ESCALADE, ESCALADE ESV, EXPRESS, IMPALA, LACROSSE, LOW CAB 4500, LOW CAB 5500, LOW CAB FORWARD 6500, MALIBU, N300, N300 MAX, REGAL, SAVANA, SIERRA 1500, SIERRA 2500, 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, YUKON XL (2015–2020) — 262 vehicle combinations

350000 EQUIPMENT

This warranty administration bulletin provides information on Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program Information.

BUICK — ENCORE, TRAILBLAZER (2020–2021) — 6 vehicle combinations

060000 ENGINE (PWS)

SUB - Certain 2020-2021 Buick Encore GX and 2021 Chevrolet Trailblazer vehicles may have a condition where the camshaft actuator oil control valve (OCV) center bolt could stick or bind. If this were to happen, it could cause a MIL light to

BUICK — CRUZE, IMPALA, LACROSSE, MALIBU, REGAL, VERANO (2010–2016) — 75 vehicle combinations

114000 ELECTRICAL SYSTEM:WIRING

This Preliminary Information communication provides information to the technician about vehicles that when attempting to start vehicle "No Fob Detected" message is displayed. Technician will find the Key FOB works and the vehicle will start

BUICK — ENCORE, TRAILBLAZER (2020–2021) — 6 vehicle combinations

061510 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PUMP

This Preliminary information communicates to the dealer a testing procedure to isolate a potential Engine Oil Pump Switching issue.

BUICK — CRUZE, ENCORE, SONIC, TRAX (2011–2020) — 124 vehicle combinations

060000 ENGINE (PWS)

This Preliminary Information communication provides information to the technician about vehicles that may have a Malfunction Indicator Lamp on. The technician may find Diagnostic Trouble Codes P0299 or P0234 set. The technician is provided

BUICK — ACADIA, ALLURE, ATS, AURA, CAMARO, CANYON, COLORADO, CTS, ENCLAVE, EQUINOX, G6, G8, IMPALA, LACROSSE, MALIBU, OUTLOOK, SRX, STS, TERRAIN, TORRENT, TRAVERSE, VUE, XTS (2006–2020) — 147 vehicle combinations

060000 ENGINE (PWS)

This Preliminary information communicates the repair recommendations for misfire and DTC's immediately following HFV6 re-manufactured engines replacement.

BUICK — 3500, 4500 SERIES, 4500HD, 5500HD, 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, LOW CAB 4500, LOW CAB 5500, 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) — 1083 vehicle combinations

355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

This Preliminary Information communication provides information to the technician that General Motors and General Motors of Canada Company do not support cross border sales. The General Motors of Canada Customer Care Centre is the sole auth

BUICK — 9-7X, ACADIA, ASTRA, ATS, AURA, AVALANCHE, AVALANCHE 1500, AVALANCHE 2500, AVEO, C SERIES, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, COBALT, COLORADO, CORVETTE, CRUZE, CTS, CTS-V, DTS, ELR, ENCLAVE, ENCORE, ENVOY, ENVOY XL, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, ESCALADE EXT 1500, EXPRESS, G3, G5, G6, G8, GRAND PRIX, GTO, H2, H3, HHR, IMPALA, ION, LACROSSE, LESABRE, LUCERNE, MALIBU, MONTANA, MONTE CARLO, OUTLOOK, PURSUIT, RAINIER, REGAL, RELAY, RENDEZVOUS, SAVANA, SIERRA 1500, SIERRA 2500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SKY, SOLSTICE, SONIC, SPARK, SRX, SS, SSR, STS, SUBURBAN, TAHOE, TERRAIN, TERRAZA, TORRENT, TRAILBLAZER, TRAVERSE, UPLANDER, VERANO, VIBE, VOLT, VUE, XLR, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL (2006–2020) — 443 vehicle combinations

010000 STEERING

This technical bulletin provides a procedure to eliminate a power steering noise due to extremely low temperatures.

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

060000 ENGINE (PWS)

Service Update - On certain vehicles, the engine oil pump may be stuck due to foreign material, and diagnostic trouble codes (DTC) P0521, P06DE, P06DD could be set. Dealers are to perform the engine oil pump screening test and if necessary,

BUICK — ENCORE, ENCORE GX, TRAILBLAZER (2020–2021) — 20 vehicle combinations

110000 ELECTRICAL SYSTEM

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 — CANYON, COLORADO, ENVISION, EQUINOX, SRX, TERRAIN (2010–2020) — 28 vehicle combinations

110000 ELECTRICAL SYSTEM

This technical bulletin advises that the code may be false and it should be cleared and then take the vehicle for a test drive to verify the code will not return and advise the customer of how the code may set during certain driving conditi

BUICK — 3500, 4500HD, 5500HD, ACADIA, ATS, AVALANCHE, AVEO, BLAZER, BOLT EV, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, CASCADA, CITY EXPRESS, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, CTS-V, ELR, ENCLAVE, ENCORE, ENVISION, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, EXPRESS, IMPALA, LACROSSE, LOW CAB 4500, LOW CAB 5500, LOW CAB FORWARD 6500, LUCERNE, MALIBU, N300, N300 MAX, REGAL, SAVANA, SIERRA 1500, SIERRA 2500, 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, YUKON DENALI, YUKON DENALI XL, YUKON XL (2012–2020) — 382 vehicle combinations

350000 EQUIPMENT

This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).

BUICK — ACADIA, ATS, BLAZER, CAMARO, CORVETTE, CT6, CTS, ENVISION, EQUINOX, ESCALADE, ESCALADE ESV, IMPALA, LACROSSE, MALIBU, SIERRA 1500, SILVERADO 1500, SUBURBAN, TAHOE, TERRAIN, TRAVERSE, XT4, XT5, XT6, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL (2018–2020) — 144 vehicle combinations

110000 ELECTRICAL SYSTEM

This Preliminary information communicates and issue with the memory seat module waking up the low speed GM lan bus and causing a battery draw.

BUICK — CORVETTE, CT4, CT5, ENVISION, ESCALADE, ESCALADE ESV, SUBURBAN, TAHOE, YUKON, YUKON XL (2020–2021) — 61 vehicle combinations

110000 ELECTRICAL SYSTEM

This informational bulletin provides information for the technicians to clear DTCs and allow the vehicle to go into sleep mode to correct the Malfunction Indicator Lamp (MIL) Illuminated and to stop DTCs setting.

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

162620 STRUCTURE:BODY:HATCHBACK/LIFTGATE:SUPPORT DEVICE/STRUT

This informational bulletin provides Information on Proper Liftgate Adjustment.

BUICK — ENCORE, MALIBU, TRAILBLAZER (2019–2021) — 4 vehicle combinations

100000 POWER TRAIN

This informational bulletin explains how to check if the pulley and/or drive chain has any damage caused by low fluid or a code set that causes the transmission to default maxing out pressure.

BUICK — ACADIA, ATS, BLAZER, CAMARO, CANYON, CAPRICE, CAPRICE POLICE PURSUIT, CAPTIVA, CAPTIVA SPORT, COLORADO, CT5, CT6, CTS, ENCLAVE, EQUINOX, IMPALA, LACROSSE, SRX, TERRAIN, TRAVERSE, XT5, XT6, XTS (2010–2020) — 296 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have oil mixed in with the engine coolant. Technician will need to inspect the oil cooler if equipped fo

BUICK — ACADIA, ATS, BLAZER, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, COLORADO, CORVETTE, CT5, CT6, CTS, CTS-V, ENCLAVE, EQUINOX, IMPALA, LACROSSE, OUTLOOK, REGAL, SRX, STS, TERRAIN, TRAVERSE, XT5, XT6, XTS (2008–2020) — 164 vehicle combinations

110000 ELECTRICAL SYSTEM

This informational bulletin provides information on Clicking/Ticking Sound/Noise Heard During Cold Start and that this should be considered a normal characteristic.