Technical Service Bulletins (TSB)

BUICK — BLAZER, ENCLAVE, TRAVERSE (2018–2020) — 8 vehicle combinations

350000 EQUIPMENT

This Preliminary information communicates noise condition that has been identified and the repair that is in process. A special Labor Operation was added for tracking purposes only.

BUICK — ACADIA, ATS, CAMARO, CANYON, COLORADO, CORVETTE, CRUZE, CT6, CTS, ELR, ENCORE, ENVISION, EQUINOX, ESCALADE, ESCALADE ESV, IMPALA, LACROSSE, MALIBU, REGAL, SIERRA 2500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SRX, SUBURBAN, TAHOE, XT5, XTS, YUKON, YUKON XL (2016–2017) — 112 vehicle combinations

110000 ELECTRICAL SYSTEM

This informational bulletin provides information on Normal Radio Display Operation ? Display Does Not Remain Off at Times After Being Turned Off in Settings and no parts should be replaced due to this condition.

BUICK — ENCORE (2020)

110000 ELECTRICAL SYSTEM

This Preliminary information communicates to the dealer that if the service AWD (All-Wheel Drive) or AWD (All-Wheel Drive) Off messages are on and there is a history DTC of C15C9 SYM02 set then no repairs are to be made at this time, a soft

BUICK — ACADIA, ATS, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, COLORADO, CT5, CT6, CTS, ENCLAVE, EQUINOX, IMPALA, LACROSSE, SRX, TERRAIN, TRAVERSE, XT5, XT6, XTS (2010–2020) — 146 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 — ENVISION (2017–2020) — 4 vehicle combinations

110000 ELECTRICAL SYSTEM

This preliminary information is created to advise the technician that may have this code present after service and how to perform the relearn.

BUICK — ENCORE (2020) — 2 vehicle combinations

263000 FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Lane Keep Assist/Adaptive Cruise Control being inoperative.

BUICK — ACADIA, ENCLAVE, TRAVERSE (2013–2017) — 15 vehicle combinations

020000 SUSPENSION

This Preliminary information communicates a Rattle or Creak Noise at slow speeds over bumps or broken pavement. If the noise cannot be pin pointed and after a thorough visual inspection of all front suspension parts and chassis ears have no

BUICK — 3500, 4500HD, 5500HD, 9-3, 9-5, 9-7X, ACADIA, ASTRA, ATS, AURA, AVALANCHE, AVEO, BLAZER, BOLT EV, C SERIES, C4500, CAMARO, CANYON, CAPRICE, CAPRICE POLICE PURSUIT, CAPTIVA, CAPTIVA SPORT, CASCADA, CITY EXPRESS, COBALT, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, CTS-V, DTS, ELR, ENCLAVE, ENCORE, ENVISION, ENVOY, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, EXPRESS, G3, G5, G6, G8, H2, H3, HHR, IMPALA, LACROSSE, LESABRE, LUCERNE, MALIBU, MONTANA, N300, N300 MAX, ORLANDO, OUTLOOK, PURSUIT, REGAL, S10, SAVANA, SIERRA 1500, SIERRA 2500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SKY, SOLSTICE, SONIC, SPARK, SPARK EV, SRX, SS, STS, SUBURBAN, T SERIES, TAHOE, TERRAIN, TORRENT, TRAILBLAZER, TRAVERSE, TRAX, UPLANDER, VERANO, VIBE, VOLT, VUE, XLR, XT4, XT5, XT6, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL (2009–2020) — 1144 vehicle combinations

162000 STRUCTURE:BODY

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

BUICK — ENCORE (2020) — 2 vehicle combinations

060000 ENGINE (PWS)

Service Update Bulletin. 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.

BUICK — ENCORE (2020)

030000 SERVICE BRAKES, HYDRAULIC

This Preliminary information communicates to dealer's that if they root cause a brake squeal/squeak noise heard upon first apply or during light brake pedal application at low speed or while in reverse after a period of non-use such as over

BUICK — ENCLAVE (2020)

111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY

This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.

BUICK — ENCLAVE, IMPALA, TRAVERSE, XTS (2019–2020) — 7 vehicle combinations

060000 ENGINE (PWS)

This technical bulletin provides a procedure to inspect the left side timing chain guide assembly for abnormal wear and to replace the guide if found the cause of the concern.

BUICK — ENCORE (2020) — 2 vehicle combinations

100000 POWER TRAIN

Service Update Bulletin. 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 transmis

BUICK — ENCORE, ENCORE GX, TRAILBLAZER (2020–2021) — 8 vehicle combinations

060000 ENGINE (PWS)

This informational bulletin advises of normal engine noise produced by the engine.

BUICK — 3500, 4500HD, 4500XD, 5500HD, 5500XD, 804-00111-BL-WSWT-D1, 804-00111-GL-WSWT-D1, 9-3, 9-4X, 9-5, 9-7X, ACADIA, ALERO, ALLURE, AMPERA, ASTRA, ATS, ATS-V, AURA, AURA HYBRID, AVALANCHE, AVALANCHE 1500, AVALANCHE 2500, AVEO, BLAZER, BOLT EV, C SERIES, C4500, C5500, C6500, C7500, C8500, CAMARO, CANYON, CAPRICE, CAPRICE POLICE PURSUIT, CAPTIVA, CAPTIVA SPORT, CASCADA, CHEYENNE, CITY EXPRESS, COBALT, COBALT SS, COLORADO, CORVETTE, CORVETTE Z06, CORVETTE ZR1, CRUZE, CT4, CT5, CT6, CTS, CTS-V, DTS, ELR, ENCLAVE, ENCORE, ENVISION, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, ESCALADE EXT 1500, ESCALADE HYBRID, EXPRESS, EXPRESS 1500, EXPRESS 2500, EXPRESS 3500, EXPRESS 4500, EXPRESS CUTAWAY, EXPRESS CUTAWAY VAN, F SERIES, G VAN BUS, G1500, G3, G3500, G4, G5, G6, G8, GRAND PRIX, GT, H SERIES, H2, H2 SUT, H3, H3 SUT, HHR, IMPALA, INSIGNIA, ION, LACROSSE, LESABRE, LOW CAB 3500, LOW CAB 4500, LOW CAB 5500, LOW CAB FORWARD 6500, LUCERNE, LUMINA, MALIBU, MALIBU ECO, MALIBU HYBRID, MONTANA, MONTE CARLO, N300, N300 MAX, OPTRA, ORLANDO, OUTLOOK, PURSUIT, REGAL, REGAL TOURX, RELAY, S10, SIERRA 1500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SILVERADO 5500HD, SILVERADO 6500HD, 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, TERRAZA, TOPKICK, TORRENT, TRAILBLAZER, TRAILBLAZER 360, TRAVERSE, TRAX, UPLANDER, VAUXHALL, VERANO, VIBE, VOLT, 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 (2006–2020) — 1828 vehicle combinations

350000 EQUIPMENT

This informational bulletin provides information on interior cleaning products and what is offered to clean the interiors of GM vehicles.

BUICK — 3500, 4500HD, 5500HD, 9-7X, ACADIA, ASTRA, ATS, AURA, AVALANCHE, AVEO, BLAZER, BOLT EV, C SERIES, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, CASCADA, CITY EXPRESS, COBALT, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, CTS-V, DTS, ELR, ENCLAVE, ENCORE, ENVISION, ENVOY, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, EXPRESS, G VAN BUS, G3, G5, G6, G8, GRAND PRIX, GTO, H2, H3, HHR, IMPALA, ION, LACROSSE, LOW CAB 4500, LOW CAB 5500, LOW CAB FORWARD 6500, LUCERNE, MALIBU, MONTANA, MONTE CARLO, N300, N300 MAX, OUTLOOK, PURSUIT, RAINIER, REGAL, RELAY, RENDEZVOUS, SAVANA, SIERRA 1500, SIERRA 2500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SILVERADO 5500HD, SILVERADO 6500HD, SKY, SOLSTICE, SONIC, SPARK, SPARK EV, SRX, SS, 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 (2007–2020) — 655 vehicle combinations

353000 EQUIPMENT:ELECTRICAL

This warranty administration bulletin explains to the technician that when using wiring repair labor operations, additional information may be needed when submitting Global Warranty transactions when doing wiring repairs.

BUICK — ACADIA, BLAZER, CRUZE, ENCLAVE, ENCORE, ENVISION, EQUINOX, LACROSSE, MALIBU, REGAL, TERRAIN, TRAVERSE, XT4, XT5, XT6 (2017–2020) — 105 vehicle combinations

060000 ENGINE (PWS)

This Preliminary information communicates a possible BCM concern if DTC P0747 sets during engine cranking when the transmission is in park.

BUICK — ACADIA, BLAZER, CRUZE, ENCLAVE, ENCORE, ENVISION, EQUINOX, LACROSSE, MALIBU, REGAL, TERRAIN, TRAVERSE, XT4, XT5, XT6 (2017–2020) — 105 vehicle combinations

060000 ENGINE (PWS)

This Preliminary information communicates a possible BCM concern if DTC P0747 sets during engine cranking when the transmission is in park.

BUICK — ACADIA, BLAZER, CRUZE, ENCLAVE, ENCORE, ENVISION, EQUINOX, LACROSSE, MALIBU, REGAL, TERRAIN, TRAVERSE, XT4, XT5, XT6 (2017–2020) — 68 vehicle combinations

350000 EQUIPMENT

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

BUICK — CAPTIVA, EQUINOX, LACROSSE, REGAL, TERRAIN, VERANO (2010–2017) — 31 vehicle combinations

092100 FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP

This Prelimary information informs the dealer of a diagnotic trouble code that may set due to a failed high pressure fuel pump. Dealers are to check fuel pressure as per current testing outlined in GM service information and replace the fue

BUICK — ACADIA, BLAZER, ENCLAVE, EQUINOX, TERRAIN, TRAVERSE, XT5, XT6 (2017–2020) — 52 vehicle combinations

110000 ELECTRICAL SYSTEM

This technical bulletin provides a procedure for replacing the body plugs due to water leaking through the body plug above the connector X500 causing the connector to be corroded.

BUICK — 3500, 4500HD, 5500HD, 9-3, 9-5, 9-7X, ACADIA, ASTRA, ATS, AURA, AVALANCHE, AVEO, BLAZER, BOLT EV, C SERIES, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, CASCADA, CITY EXPRESS, COBALT, COLORADO, CORVETTE, CRUZE, CT6, CTS, CTS-V, DTS, ELR, ENCLAVE, ENCORE, ENVISION, ENVOY, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, EXPRESS, G VAN BUS, G3, G5, G6, G8, GRAND PRIX, H2, H3, HHR, IMPALA, LACROSSE, LOW CAB 4500, LOW CAB 5500, LOW CAB FORWARD 6500, LUCERNE, MALIBU, MONTANA, N300, N300 MAX, OUTLOOK, PURSUIT, REGAL, RELAY, SAVANA, SIERRA 1500, SIERRA 2500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SKY, SOLSTICE, SONIC, SPARK, SPARK EV, SRX, SS, 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 (2008–2020) — 597 vehicle combinations

355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

This informational bulletin provides information on interior cleaning products and what is offered to clean the interiors of GM vehicles.

BUICK — ACADIA, BLAZER, ENCLAVE, TRAVERSE, XT5, XT6 (2017–2021) — 188 vehicle combinations

033000 SERVICE BRAKES, HYDRAULIC:POWER ASSIST

This technical bulletin provides repair information to correct a customer concern of the Service Engine Soon Lamp illuminated and/or Service Power Brake Assist message displayed, with DTCs P0557 or P0558 Stored.

BUICK — ACADIA, ENCLAVE, TRAVERSE (2020) — 6 vehicle combinations

117000 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

This technical bulletin provides repair information to correct a customer concern of Instrument Cluster Driver Information Center Defaults to Settings or Units Page at Start.

BUICK — 3500, 4500HD, 5500HD, 6500XD, 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, 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, LOW CAB 4500, LOW CAB 5500, LUCERNE, MALIBU, MONTANA, MONTE CARLO, N300, OUTLOOK, PURSUIT, RAINIER, REGAL, RELAY, RENDEZVOUS, SAVANA, SIERRA 1500, SIERRA 2500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, 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 (2006–2020) — 709 vehicle combinations

355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

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