Chevrolet Trailblazer Service Bulletins (2021)

754 manufacturer communications on file.

• November 29, 2021•Document ID: 10205554

  Service Bulletin/Repair Instructions
  POWER TRAIN:AUTOMATIC TRANSMISSION

  Mfr Comm. #:

  21NA169

  Date Added:

  December 27, 2021

  Manufacturer:

  CHEVROLET

  Summary

  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.

  Associated Products (19)

  2022 Buick Encore GX2022 Buick Envision2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet Blazer2022 Chevrolet Malibu2022 Chevrolet Trailblazer2022 GMC Acadia2021 Buick Encore GX2021 Buick Envision2021 Cadillac XT42021 Cadillac XT52021 Cadillac XT62021 Chevrolet Blazer2021 Chevrolet Malibu2021 Chevrolet Trailblazer2021 GMC Acadia2021 GMC Terrain
  Associated Documents

  • DownloadMC-10205554-0001.pdf↗
• November 22, 2021•Document ID: 10204453

  Service Bulletin/Repair Instructions
  EQUIPMENT; ENGINE

  Mfr Comm. #:

  PIP5829

  Date Added:

  December 13, 2021

  Manufacturer:

  BUICK

  Summary

  This Preliminary information communicates to the dealers information related to diagnosis of a MIL illuminated with DTC P0299.

  Associated Products (4)

  2022 Buick Encore GX2022 Chevrolet Trailblazer2021 Buick Encore GX2021 Chevrolet Trailblazer
  Associated Documents

  • DownloadMC-10204453-0001.pdf↗
• November 19, 2021•Document ID: 10205559

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); EQUIPMENT

  Mfr Comm. #:

  21NA215

  Date Added:

  December 27, 2021

  Manufacturer:

  BUICK

  Summary

  This technical bulletin provides a procedure to correct a customer concern of a Pop Noise Heard on Heavy Acceleration Only.

  Associated Products (4)

  2022 Buick Encore GX2022 Chevrolet Trailblazer2021 Buick Encore GX2021 Chevrolet Trailblazer
  Associated Documents

  • DownloadMC-10205559-0001.pdf↗
• November 15, 2021•Document ID: 10205555

  Service Bulletin/Repair Instructions
  STEERING; ELECTRICAL SYSTEM

  Mfr Comm. #:

  21NA177

  Date Added:

  December 27, 2021

  Manufacturer:

  BUICK

  Summary

  This service bulletin provides repair information to correct a customer concern of Service Power Steering DIC Message, DTC C0051 58 - Steering Wheel Angle Sensor Error Set.

  Associated Products (2)

  2021 Buick Encore GX2021 Chevrolet Trailblazer
  Associated Documents

  • DownloadMC-10205555-0001.pdf↗
• November 15, 2021•Document ID: 10204451

  Service Bulletin/Repair Instructions
  TIRES; PARKING BRAKE; FORWARD COLLISION AVOIDANCE; VEHICLE SPEED CONTROL; LANE DEPARTURE

  Mfr Comm. #:

  PIC6446A

  Date Added:

  December 13, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to the dealer if the lane keep assist and forward collision alert are inoperative, both indicators may be flashing on and off while driving. When pressing button to turn on the lane keep assist they receive a message stating the system is not available.  If the above conditions are met to verify that all of the tires are the correct size as per vehicle build. If an incorrect tire side if found on the vehicle it will cause a wheel speed discrepancy on straight road travel that will disable all driver assistance (Front Camera Module) systems relying on wheel speed sensor data inputs. LKA ? Lane Keep Assist LDW ? Lane Departure Warning FCA ? Forward Collision Alert LSCMB ? Low Speed Collision Mitigation Braking (RPO-UHY)

  Associated Products (4)

  2022 Buick Encore GX2022 Chevrolet Trailblazer2021 Buick Encore GX2021 Chevrolet Trailblazer
  Associated Documents

  • DownloadMC-10204451-0001.pdf↗
• November 12, 2021•Document ID: 10205577

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:COOLING SYSTEM; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY

  Mfr Comm. #:

  21NA257

  Date Added:

  December 27, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides a service procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3075 Set.

  Associated Products (18)

  2022 Buick Encore GX2022 Cadillac CT42022 Cadillac CT52022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet Blazer2022 Chevrolet Trailblazer2022 GMC Acadia2021 Buick Encore GX2021 Cadillac CT42021 Cadillac CT52021 Cadillac XT42021 Cadillac XT52021 Cadillac XT62021 Chevrolet Blazer2021 Chevrolet Trailblazer2021 GMC Acadia
  Associated Documents

  • DownloadMC-10205577-0001.pdf↗
• November 9, 2021•Document ID: 10204447

  Service Bulletin/Repair Instructions
  ENGINE; ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIP5826A

  Date Added:

  December 13, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to the dealers information related to isolating a potential engine wiring harness issue causing a MIL on with P0521.

  Associated Products (2)

  2021 Buick Encore GX2021 Chevrolet Trailblazer
  Associated Documents

  • DownloadMC-10204447-0001.pdf↗
• November 8, 2021•Document ID: 10205738

  Service Bulletin/Repair Instructions
  TIRES; WHEELS

  Mfr Comm. #:

  030310007K

  Date Added:

  January 3, 2022

  Manufacturer:

  BUICK

  Summary

  This service bulletin provides information for dealers/technicians on Tire/Wheel Characteristics (Vibration, Balance, Shake, Flat Spotting) of GM Original Equipment Tires.

  Associated Products (62)

  2022 Buick Enclave2022 Buick Encore2022 Buick Encore GX2022 Buick Envision2022 Cadillac CT42022 Cadillac CT52022 Cadillac Escalade2022 Cadillac Escalade ESV2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet Blazer2022 Chevrolet Bolt EUV2022 Chevrolet Bolt EV2022 Chevrolet Camaro2022 Chevrolet Colorado2022 Chevrolet Corvette2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Malibu+ 42 more
  Associated Documents

  • DownloadMC-10205738-0001.pdf↗
• November 8, 2021•Document ID: 10205539

  Service Bulletin/Repair Instructions
  EQUIPMENT; ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  19NA104

  Date Added:

  December 27, 2021

  Manufacturer:

  CHEVROLET

  Summary

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

  Associated Products (72)

  2022 Buick Enclave2022 Buick Encore2022 Buick Encore GX2022 Buick Envision2022 Cadillac CT42022 Cadillac CT52022 Cadillac Escalade2022 Cadillac Escalade ESV2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet 35002022 Chevrolet 45002022 Chevrolet 4500HD2022 Chevrolet 4500XD2022 Chevrolet 5500HD2022 Chevrolet 5500XD2022 Chevrolet Blazer2022 Chevrolet Bolt EUV2022 Chevrolet Bolt EV+ 52 more
  Associated Documents

  • DownloadMC-10205539-0001.pdf↗
• November 8, 2021•Document ID: 10204444

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; ENGINE

  Mfr Comm. #:

  PIP5826

  Date Added:

  December 13, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to the dealers information related to isolating a potential engine wiring harness issue causing a MIL on with P0521.

  Associated Products (2)

  2021 Buick Encore GX2021 Chevrolet Trailblazer
  Associated Documents

  • DownloadMC-10204444-0001.pdf↗
• November 5, 2021•Document ID: 10205737

  Service Bulletin/Repair Instructions
  EQUIPMENT ADAPTIVE/MOBILITY:VEHICLE CONTROLS:STEERING

  Mfr Comm. #:

  030091001H

  Date Added:

  January 3, 2022

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure, when diagnosing vibration concerns.

  Associated Products (72)

  2022 Buick Enclave2022 Buick Encore2022 Buick Encore GX2022 Buick Envision2022 Cadillac CT42022 Cadillac CT52022 Cadillac Escalade2022 Cadillac Escalade ESV2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet 35002022 Chevrolet 45002022 Chevrolet 4500HD2022 Chevrolet 4500XD2022 Chevrolet 5500HD2022 Chevrolet 5500XD2022 Chevrolet Blazer2022 Chevrolet Bolt EUV2022 Chevrolet Bolt EV+ 52 more
  Associated Documents

  • DownloadMC-10205737-0001.pdf↗
• November 3, 2021•Document ID: 10204441

  Service Bulletin/Repair Instructions
  LANE DEPARTURE; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

  Mfr Comm. #:

  PIT5865

  Date Added:

  December 13, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates an issue with adaptive cruise and lane keep assist inoperative due to an internal issue with the front view windshield camera.  Dealers are to replace the camera.

  Associated Products (11)

  2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Chevrolet Camaro2021 Chevrolet Equinox2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 Chevrolet Trailblazer2021 GMC Terrain2021 GMC Yukon XL
  Associated Documents

  • DownloadMC-10204441-0001.pdf↗
• August 27, 2021•Document ID: 10205054

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:COOLING SYSTEM

  Mfr Comm. #:

  20NA028

  Date Added:

  December 20, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin is to inform dealers that in extreme cold weather, a grille winter cover needs be added during PDI to avoid the customer returning with concerns related to charge air cooler icing.

  Associated Products (4)

  2022 Buick Encore GX2022 Chevrolet Trailblazer2021 Buick Encore GX2021 Chevrolet Trailblazer
  Associated Documents

  • DownloadMC-10205054-0001.pdf↗
• August 23, 2021•Document ID: 10201324

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  PIP5819

  Date Added:

  September 13, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates inspection and/or needed repairs for DTC P2714 on a VT40 CVT transmission

  Associated Products (3)

  2021 Buick Encore GX2021 Chevrolet Malibu2021 Chevrolet Trailblazer
  Associated Documents

  • DownloadMC-10201324-0001.pdf↗
• August 11, 2021•Document ID: 10201310

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  PIT3099U

  Date Added:

  September 13, 2021

  Manufacturer:

  GMC

  Summary

  This Preliminary Information communication provides information to the technician about installing General Motors Accessory parts/kits.  Technicians should refer to Service Information for information regarding most accessories.  Technicians may also contact PARTECH and/or the Techline Customer Support Center for additional support.

  Associated Products (49)

  2022 Buick Enclave2022 Buick Encore2022 Cadillac CT42022 Cadillac CT52022 Cadillac Escalade2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet Blazer2022 Chevrolet Bolt EV2022 Chevrolet Camaro2022 Chevrolet Colorado2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Malibu2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 Chevrolet Trailblazer2022 Chevrolet Traverse2022 Chevrolet Trax+ 29 more
  Associated Documents

  • DownloadMC-10201310-0001.pdf↗
• August 6, 2021•Document ID: 10205059

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM:12V/24V/48V BATTERY

  Mfr Comm. #:

  20NA132

  Date Added:

  December 20, 2021

  Manufacturer:

  CHEVROLET

  Summary

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

  Associated Products (64)

  2022 Buick Enclave2022 Buick Encore2022 Buick Encore GX2022 Buick Envision2022 Cadillac CT42022 Cadillac CT52022 Cadillac Escalade2022 Cadillac Escalade ESV2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet Blazer2022 Chevrolet Bolt EUV2022 Chevrolet Bolt EV2022 Chevrolet Camaro2022 Chevrolet Colorado2022 Chevrolet Corvette2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Malibu+ 44 more
  Associated Documents

  • DownloadMC-10205059-0001.pdf↗
• August 6, 2021•Document ID: 10205048

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  18NA073

  Date Added:

  December 20, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.

  Associated Products (31)

  2021 Buick Enclave2021 Buick Encore2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Cadillac Escalade ESV2021 Cadillac XT42021 Cadillac XT52021 Cadillac XT62021 Chevrolet 4500HD2021 Chevrolet 5500HD2021 Chevrolet Blazer2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Corvette2021 Chevrolet Equinox2021 Chevrolet Express2021 Chevrolet Malibu2021 Chevrolet Spark+ 11 more
  Associated Documents

  • DownloadMC-10205048-0001.pdf↗
• July 26, 2021•Document ID: 10201260

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIT5848A

  Date Added:

  September 13, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to the dealer that if the front wipers only work on high speed and fall between the build dates listed to replace the X50A Fuse Block-Underhood.

  Associated Products (2)

  2021 Buick Encore GX2021 Chevrolet Trailblazer
  Associated Documents

  • DownloadMC-10201260-0001.pdf↗
• July 21, 2021•Document ID: 10201252

  Service Bulletin/Repair Instructions
  AIR BAGS; POWER TRAIN

  Mfr Comm. #:

  PIC5650J

  Date Added:

  September 13, 2021

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency Identification Devices when the concern is present. Dealer should also direct their customers to the appropriate section in the Owner manuals that references that the device complies.

  Associated Products (46)

  2022 Buick Encore2022 Cadillac CT42022 Cadillac CT52022 Cadillac Escalade2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet Bolt EV2022 Chevrolet Camaro2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Malibu2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 Chevrolet Trailblazer2022 Chevrolet Traverse2022 Chevrolet Trax2022 GMC Acadia2022 GMC Canyon2022 GMC Yukon+ 26 more
  Associated Documents

  • DownloadMC-10201252-0001.pdf↗
• July 21, 2021•Document ID: 10201251

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM:ADAS:BLINDSPOT:SENSORS

  Mfr Comm. #:

  PIT5698B

  Date Added:

  September 13, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates additional information on how a LIN bus operates and diagnostic tips when working on a LIN bus.

  Associated Products (46)

  2022 Buick Encore2022 Cadillac CT42022 Cadillac CT52022 Cadillac Escalade2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet Bolt EV2022 Chevrolet Camaro2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Malibu2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 Chevrolet Trailblazer2022 Chevrolet Traverse2022 Chevrolet Trax2022 GMC Acadia2022 GMC Canyon2022 GMC Yukon+ 26 more
  Associated Documents

  • DownloadMC-10201251-0001.pdf↗