Technical Service Bulletins (TSB)

BUICK — ACADIA, ATS, BOLT EV, CT6, CTS, ENCLAVE, EQUINOX, ESCALADE ESV, MALIBU, SIERRA, SIERRA 1500, SIERRA 3500, SILVERADO, SILVERADO 1500, SILVERADO 2500, SUBURBAN, TAHOE, TERRAIN, TRAVERSE, VOLT, XT5, XTS, YUKON DENALI (2013–2019) — 63 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 — CRUZE, ENCORE, EQUINOX, MALIBU, SIERRA 1500, SILVERADO 1500, TERRAIN (2016–2019) — 36 vehicle combinations

060000 ENGINE (PWS)

This Preliminary information communicates A vehicle may have a concern of running poor and stalling. No trouble codes may be set referencing this condition. Fuel trims around -20% may be observed on both banks. Engine oil level will be

BUICK — ACADIA, ENCLAVE, TRAVERSE (2017–2019) — 14 vehicle combinations

134000 VISIBILITY:SUN/MOON ROOF ASSEMBLY

This Preliminary information communicates information to let dealers know that the sunshade catch is available and not to replace sunroof housing.

BUICK — 9-7X, ACADIA, ASTRA, ATS, AURA, AVALANCHE, AVALANCHE 1500, AVALANCHE 2500, AVEO, BLAZER, BOLT EV, C SERIES, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, CASCADA, CITY EXPRESS, CLASSIC, COBALT, COLORADO, CORVETTE, CRUZE, CT6, CTS, DTS, ELR, ENCLAVE, ENCORE, ENVISION, 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, N300, N300 MAX, OUTLOOK, PURSUIT, RAINIER, REGAL, RELAY, RENDEZVOUS, S10, SAVANA, SIERRA, SIERRA 1500, SIERRA 2500, SIERRA DENALI, SILVERADO, 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, XLR, XT4, XT5, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL (2006–2019) — 648 vehicle combinations

190000 TIRES

This informational bulletin provides information for dealers/technicians on Tire Radial Force Variation (RFV).

BUICK — 3500, 4500, 4500HD, 4500XD, 5500HD, 5500XD, ACADIA, ATS, AVEO, BLAZER, BOLT EUV, BOLT EV, CAMARO, CANYON, CAPRICE, CAPTIVA, CASCADA, CITY EXPRESS, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, CTS-V, ELR, ENCLAVE, ENCORE, ENCORE GX, ENVISION, EQUINOX, ESCALADE, ESCALADE ESV, EXPRESS, HUMMER EV, IMPALA, LACROSSE, LOW CAB 4500, LOW CAB 5500, LOW CAB FORWARD 6500, MALIBU, N300, N300 MAX, REGAL, S10, SAVANA, SIERRA, 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, SUBURBAN, TAHOE, TERRAIN, TRAILBLAZER, TRAVERSE, TRAX, VERANO, VOLT, XT4, XT5, XT6, XTS, YUKON, YUKON XL (2014–2022) — 2012 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This informational bulletin provides information for dealers/technicians and customers on steam/vapor coming from the front grille or radiator area.

BUICK — CRUZE, ENCORE, SONIC, TRAX (2011–2019) — 28 vehicle combinations

060000 ENGINE (PWS)

This technical bulletin provides a procedure to replace the intake manifold if diagnostics has found the Non Return Valve missing.

BUICK — 3500, 4500 SERIES, 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, 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, SIERRA 1500, SIERRA 2500, SIERRA DENALI, SILHOUETTE, SILVERADO, 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) — 1076 vehicle combinations

060000 ENGINE (PWS)

This Preliminary Information communication provides information to the technician to not remove the torque converter bolts and start the engine as this may cause damage to the torque converter of the crankshaft on vehicles equipped with an

BUICK — ACADIA, CANYON, COLORADO, ENCLAVE, EQUINOX, IMPALA, TERRAIN, TRAVERSE, XTS (2012–2019) — 42 vehicle combinations

060000 ENGINE (PWS)

This Preliminary information communicates a diagnostic trail to a likely conclusion for lean codes on these vehicles.

BUICK — REGAL (2018–2019) — 2 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This Preliminary information communicates that during an autostop event the customer may notice a pump noise. The ECM turns on the auxiliary coolant pump to meet the heater performance so the noise they hear is normal and no repairs are nee

BUICK — ENCLAVE, LACROSSE, TERRAIN (2018–2019) — 4 vehicle combinations

100000 POWER TRAIN

N182200470 - Customer Satisfaction - Certain 2018 model year Buick Enclave and LaCrosse vehicles, and 2018 - 2019 model year GMC Terrain vehicles, may have a condition that occurs when the driver places the vehicle in neutral immediately fo

BUICK — 3500, 4500 SERIES, 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, 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, SIERRA 1500, SIERRA 2500, SIERRA DENALI, SILHOUETTE, SILVERADO, 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) — 2152 vehicle combinations

060000 ENGINE (PWS)

This Preliminary Information communication provides information to the technician about finding needle bearings during an oil change. Technician will gain access to the roller rockers to inspect them. Only replace the roller rocker that is

BUICK — CRUZE, ENCORE, SONIC, TRAX (2011–2019) — 28 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, BLAZER, ENCLAVE, SIERRA 1500, SILVERADO 1500, TRAVERSE, XT5 (2017–2019) — 13 vehicle combinations

050000 PARKING BRAKE

This Preliminary information communicates information to diagnose DTC C056D or C056E.

BUICK — 3500, 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, DTS, ELR, ENCLAVE, ENCORE, ENVISION, ENVOY, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, EXPRESS, G VAN BUS, G3, G5, G6, G8, H2, H3, HHR, IMPALA, LACROSSE, LOW CAB 4500, LUCERNE, MALIBU, MONTANA, OUTLOOK, PURSUIT, REGAL, SAVANA, SIERRA, SIERRA 1500, SIERRA 2500, SIERRA 3500, SIERRA DENALI, SILVERADO, 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, TOPKICK, TORRENT, TRAILBLAZER, TRAVERSE, TRAX, UPLANDER, VERANO, VIBE, VOLT, VUE, W-SERIES, XT4, XT5, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL (2009–2019) — 503 vehicle combinations

350000 EQUIPMENT

This informational bulletin provides information for dealers/technicians on Use of Dealer Case Management (DCM) and Being Prepared for Contacting U.S. Technical Assistance (TAC).

BUICK — ACADIA, ATS, ATS-V, CAMARO, CANYON, CAPTIVA, COLORADO, CTS, ENCLAVE, EQUINOX, IMPALA, LACROSSE, SRX, TERRAIN, TRAVERSE, XTS (2013–2019) — 76 vehicle combinations

060000 ENGINE (PWS)

This Preliminary Information communication provides information on a rattle, tick, or knock type noise. Any drivability concerns they should be addressed prior to the following diagnostic progression. A sound file or video with sound of the

BUICK — ENCLAVE, TRAVERSE (2018–2019) — 4 vehicle combinations

110000 ELECTRICAL SYSTEM

This informational bulletin explains where to locate the trailer brake controller blunt ends on the instrument panel wiring harness.

BUICK — ATS, CTS, REGAL, TERRAIN, XTS (2018–2019) — 10 vehicle combinations

110000 ELECTRICAL SYSTEM

This Preliminary information communicates information on IPC Speedlimit concerns. Speed limit displays no value, toggles between values, or is blank. (All models) The speed limit unit of measurement (KPH/MPH) flashes. (for Cadillac Mo

BUICK — CRUZE, ENCORE, SONIC, TRAX (2011–2019) — 62 vehicle combinations

060000 ENGINE (PWS)

This informational bulletin explains to the technician to inspect the pistons for damage and not just replace the engine assembly if the pistons are the only cause of damage.

BUICK — ACADIA, BLAZER, ENVISION, EQUINOX, TERRAIN, XT5 (2017–2020) — 61 vehicle combinations

190000 TIRES

This warranty administration bulletin provide policy information on tires are not meeting tread depth expectations, or wearing out (reaching 2/32)) too quickly.

BUICK — ENCLAVE, TRAVERSE (2019) — 2 vehicle combinations

020000 SUSPENSION

Service Update. Certain vehicles may have a left front lower control arm ball joint not fully seated. Dealers are to inspect the label on the left front lower control arm for suspect serial numbers and replace the left front lower control

BUICK — LACROSSE, MALIBU (2016–2018) — 12 vehicle combinations

020000 SUSPENSION

This technical bulletin provides a procedure to add a washer to prevent the rear shock outer housing making solid contact with the shock mount isolation rubber.

BUICK — ENCLAVE, TRAVERSE (2019) — 2 vehicle combinations

020000 SUSPENSION

Service Update. Certain vehicles may have a left front lower control arm ball joint not fully seated. Dealers are to inspect the label on the left front lower control arm for suspect serial numbers and replace the left front lower control

BUICK — ACADIA, ENCLAVE, TRAVERSE, XT5 (2017–2019) — 10 vehicle combinations

110000 ELECTRICAL SYSTEM

This Preliminary information communicates information to diagnose DTC C056D or C056E.

BUICK — ACADIA, ATS, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, CASCADA, COBALT, COLORADO, CORVETTE, CRUZE, CT6, CTS, ENCLAVE, ENCORE, ENVISION, EQUINOX, ESCALADE, EXPRESS, HHR, IMPALA, LACROSSE, MALIBU, OUTLOOK, REGAL, SAVANA, SIERRA 1500, SILVERADO 1500, SKY, SOLSTICE, SRX, STS, SUBURBAN, TAHOE, TERRAIN, TRAVERSE, TRAX, VERANO, XT4, XT5, XTS, YUKON (2007–2019) — 480 vehicle combinations

060000 ENGINE (PWS)

This Preliminary information communicates to the dealer an issue where the vehicle's engine may crank over unprompted and not start afterward. This is the result of hooking up the Active Fuel Injector Tool incorrectly on vehicles equipped

BUICK — 3500, 4500 SERIES, 9-3, 9-5, 9-7X, ACADIA, ASCENDER, ASTRA, ASTRO, ATS, AURA, AVALANCHE, AVALANCHE 1500, AVALANCHE 2500, AVEO, AZTEK, BLAZER, BOLT EV, BONNEVILLE, C SERIES, CAMARO, CANYON, CAPRICE, CAPTIVA, CAPTIVA SPORT, CASCADA, CAVALIER, CENTURY, CHEYENNE, CITY EXPRESS, CLASSIC, COBALT, COLORADO, CORVETTE, CRUZE, CT6, CTS, DEVILLE, DTS, ELR, ENCLAVE, ENCORE, ENVISION, ENVOY, ENVOY XL, ENVOY XUV, EPICA, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, ESCALADE EXT 1500, EXPRESS, F SERIES, G VAN BUS, G3, G5, G6, G8, GRAND AM, GRAND PRIX, GTO, H SERIES, H-SERIES, H2, H3, HHR, I-290, I-350, IMPALA, ION, JIMMY CLASSIC, L200, L300, LACROSSE, LESABRE, LOW CAB 4500, LOW CAB 5500, LUCERNE, MALIBU, MONTANA, MONTE CARLO, N-SERIES, N300, N300 MAX, OPTRA, ORLANDO, OUTLOOK, PARK AVENUE, PURSUIT, RAINIER, REGAL, RELAY, RENDEZVOUS, S10, SAFARI, SAVANA, SIERRA, SIERRA 1500, SIERRA 2500, SIERRA 3500, SIERRA DENALI, SILVERADO, SILVERADO 1500, SILVERADO 1500 HD, SILVERADO 2500, SILVERADO 3500, SKY, SOLSTICE, SONIC, SPARK, SPARK EV, SRX, SS, SSR, STS, SUBURBAN, SUNFIRE, T SERIES, TAHOE, TERRAIN, TERRAZA, TOPKICK, TORRENT, TRAILBLAZER, TRAVERSE, TRAX, UPLANDER, VENTURE, VERANO, VIBE, VOLT, VUE, W-SERIES, XL7, XLR, XT5, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL (2005–2018) — 809 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.