GMC Sierra Service Bulletins

10,013 manufacturer communications on file.

• August 27, 2026•Document ID: 11036709

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6503E

  Date Added:

  September 2, 2026

  Manufacturer:

  GMC

  Summary

  This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have: 1.Completed the diagnostic procedure in this PI, and 2.Contacted TAC and received authorization, including the SI document number and specific step that directs camera replacement.

  Associated Products (42)

  2026 Buick Enclave2026 Buick Envision2026 Cadillac CT52026 Chevrolet Blazer2026 Chevrolet BrightDrop2026 Chevrolet Corvette2026 Chevrolet Equinox2026 Chevrolet Silverado2026 Chevrolet Suburban2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Sierra2026 GMC Terrain2026 GMC Yukon2026 GMC Yukon XL2025 Buick Enclave2025 Buick Envision2025 Cadillac CT52025 Cadillac Lyriq+ 22 more
  Associated Documents

  • DownloadMC-11036709-0001.pdf↗
• August 27, 2026•Document ID: 11036704

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6529B

  Date Added:

  September 2, 2026

  Manufacturer:

  CADILLAC

  Summary

  This PI was created to address an Intermittent Loss of Connectivity, GPS, or Wi-Fi Due to OnStar Module concern.

  Associated Products (20)

  2026 Chevrolet Silverado2026 GMC Sierra2025 Chevrolet Silverado2025 GMC Sierra2024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Sierra2024 GMC Yukon2024 GMC Yukon XL2023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Chevrolet Silverado2023 Chevrolet Suburban2023 Chevrolet Tahoe2023 GMC Sierra2023 GMC Yukon2023 GMC Yukon XL
  Associated Documents

  • DownloadMC-11036704-0001.pdf↗
• August 27, 2026•Document ID: 11036690

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6541

  Date Added:

  September 2, 2026

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to the technicians a diagnostic tip if a technician loses communication with the image processor #2 and how to restore communication

  Associated Products (130)

  2027 Buick Enclave2027 Buick Encore GX2027 Cadillac Escalade IQ2027 Cadillac Escalade IQL2027 Cadillac Lyriq2027 Cadillac Optiq2027 Cadillac Vistiq2027 Chevrolet Blazer2027 Chevrolet Bolt EV2027 Chevrolet Corvette2027 Chevrolet Equinox2027 Chevrolet Trailblazer2027 Chevrolet Traverse2027 GMC Acadia2027 GMC Terrain2026 Buick Enclave2026 Buick Encore2026 Buick Encore GX2026 Buick Envision2026 Buick Envista+ 110 more
  Associated Documents

  • DownloadMC-11036690-0001.pdf↗
• August 26, 2026•Document ID: 11036348

  Service Campaign
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N252516700-01

  Date Added:

  August 26, 2026

  Manufacturer:

  GMC

  Summary

  The Battery Energy Control Module (BECM) in certain vehicles include battery-monitoring software. An update is available for this software that improves the BECM’s ability to detect moisture inside the RESS enclosure. Dealers are to reprogram the BECM with the updated software.

  Associated Products (11)

  2026 Cadillac Escalade IQ2026 Chevrolet Silverado2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Sierra2025 Cadillac Escalade IQ2025 Chevrolet Silverado2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2025 GMC Sierra2019 Chevrolet Silverado
  Associated Documents

  • DownloadMC-11036348-0001.pdf↗
• August 24, 2026•Document ID: 11036478

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  663.20

  Date Added:

  August 31, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This update contains a required software change to help improve the overall software update and diagnostics process. Be sure to install this update to be able to receive future software updates.

  Associated Products (2)

  2026 Chevrolet Silverado2026 GMC Sierra
  Associated Documents

  • DownloadMC-11036478-0001.pdf↗
• August 22, 2026•Document ID: 11036401

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6452E

  Date Added:

  August 27, 2026

  Manufacturer:

  CADILLAC

  Summary

  This is a diagnostic PI to assist on a repair to fix a concern for the HVAC temperature doors binding at times

  Associated Products (16)

  2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Chevrolet Silverado2026 Chevrolet Suburban2026 Chevrolet Tahoe2026 GMC Sierra2026 GMC Yukon2026 GMC Yukon XL2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Chevrolet Silverado2025 Chevrolet Suburban2025 Chevrolet Tahoe2025 GMC Sierra2025 GMC Yukon2025 GMC Yukon XL
  Associated Documents

  • DownloadMC-11036401-0001.pdf↗
• August 21, 2026•Document ID: 11036400

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6503D

  Date Added:

  August 27, 2026

  Manufacturer:

  CADILLAC

  Summary

  This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have: 1.Completed the diagnostic procedure in this PI, and 2.Contacted TAC and received authorization, including the SI document number and specific step that directs camera replacement.

  Associated Products (42)

  2026 Buick Enclave2026 Buick Envision2026 Cadillac CT52026 Chevrolet Blazer2026 Chevrolet BrightDrop2026 Chevrolet Corvette2026 Chevrolet Equinox2026 Chevrolet Silverado2026 Chevrolet Suburban2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Sierra2026 GMC Terrain2026 GMC Yukon2026 GMC Yukon XL2025 Buick Enclave2025 Buick Envision2025 Cadillac CT52025 Cadillac Lyriq+ 22 more
  Associated Documents

  • DownloadMC-11036400-0001.pdf↗
• August 20, 2026•Document ID: 11036392

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6551C

  Date Added:

  August 27, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues

  Associated Products (233)

  2026 Buick Enclave2026 Buick Encore2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer2026 Chevrolet BrightDrop+ 213 more
  Associated Documents

  • DownloadMC-11036392-0001.pdf↗
• August 20, 2026•Document ID: 11036308

  Service Campaign
  POWER TRAIN

  Mfr Comm. #:

  N252502891-01

  Date Added:

  August 20, 2026

  Manufacturer:

  CADILLAC

  Summary

  Certain vehicles may have a condition in which the internal differential nut was cross threaded or missing during assembly. Dealers will review the vehicles service history in IVH, and if necessary, replace the rear electric drive transmission module.

  Associated Products (8)

  2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Chevrolet BrightDrop2025 GMC Sierra2024 BrightDrop Zevo2024 Cadillac Lyriq2024 Chevrolet Blazer2024 Chevrolet Silverado
  Associated Documents

  • DownloadMC-11036308-0001.pdf↗
• August 19, 2026•Document ID: 11036468

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.30

  Date Added:

  August 31, 2026

  Manufacturer:

  GMC

  Summary

  • Improvements to accuracy for Diesel Exhaust Fluid level shown in driver display

  Associated Products (2)

  2025 Chevrolet Silverado2025 GMC Sierra
  Associated Documents

  • DownloadMC-11036468-0001.pdf↗
• August 18, 2026•Document ID: 11036479

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N26-254904

  Date Added:

  August 31, 2026

  Manufacturer:

  GMC

  Summary

  • Fixes to help prevent false Service Driver Assist System messages. • Improvements to connectivity for OnStar.

  Associated Products (2)

  2026 Chevrolet Silverado2026 GMC Sierra
  Associated Documents

  • DownloadMC-11036479-0001.pdf↗
• August 14, 2026•Document ID: 11036220

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6131

  Date Added:

  August 17, 2026

  Manufacturer:

  GMC

  Summary

  This Preliminary Information (PI) relays to dealer technicians to replace the engine and turbocharger if there is a lack of lubrication to the rocker arms or rocker arm components.

  Associated Products (2)

  2026 Chevrolet Silverado2026 GMC Sierra
  Associated Documents

  • DownloadMC-11036220-0001.pdf↗
• August 14, 2026•Document ID: 11036222

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6533A

  Date Added:

  August 17, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost left or right side object detection alerts.

  Associated Products (26)

  2027 Buick Enclave2027 Cadillac Escalade IQ2027 Cadillac Escalade IQL2027 Cadillac Lyriq2027 Cadillac Vistiq2027 Chevrolet Bolt EV2027 Chevrolet Traverse2027 GMC Acadia2026 Buick Enclave2026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Vistiq2026 Chevrolet Silverado2026 Chevrolet Suburban2026 Chevrolet Tahoe2026 Chevrolet Traverse+ 6 more
  Associated Documents

  • DownloadMC-11036222-0001.pdf↗
• August 12, 2026•Document ID: 11036480

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.31

  Date Added:

  August 31, 2026

  Manufacturer:

  GMC

  Summary

  • Improvements to reliability when extending the running boards on your vehicle • Improvements to accuracy for Diesel Exhaust Fluid level shown in driver display.

  Associated Products (2)

  2025 Chevrolet Silverado2025 GMC Sierra
  Associated Documents

  • DownloadMC-11036480-0001.pdf↗
• August 12, 2026•Document ID: 11036219

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6503C

  Date Added:

  August 17, 2026

  Manufacturer:

  GMC

  Summary

  This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have: 1.Completed the diagnostic procedure in this PI, and 2.Contacted TAC and received authorization, including the SI document number and specific step that directs camera replacement.

  Associated Products (42)

  2026 Buick Enclave2026 Buick Envision2026 Cadillac CT52026 Chevrolet Blazer2026 Chevrolet BrightDrop2026 Chevrolet Corvette2026 Chevrolet Equinox2026 Chevrolet Silverado2026 Chevrolet Suburban2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Sierra2026 GMC Terrain2026 GMC Yukon2026 GMC Yukon XL2025 Buick Enclave2025 Buick Envision2025 Cadillac CT52025 Cadillac Lyriq+ 22 more
  Associated Documents

  • DownloadMC-11036219-0001.pdf↗
• August 12, 2026•Document ID: 11036143

  Service Campaign
  FUEL/PROPULSION SYSTEM

  Mfr Comm. #:

  N262558690-01

  Date Added:

  August 12, 2026

  Manufacturer:

  GMC

  Summary

  General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition which can cause the fuel pump power control module to fail. If this were to occur, fuel flow to the engine could be interrupted. Dealers will replace the fuel pump power control module.

  Associated Products (16)

  2023 Chevrolet Colorado2023 Chevrolet Equinox2023 Chevrolet Silverado2023 GMC Canyon2023 GMC Sierra2023 GMC Terrain2022 Buick Enclave2022 Chevrolet Blazer2022 Chevrolet Camaro2022 Chevrolet Silverado2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 Chevrolet Traverse2022 GMC Sierra2022 GMC Yukon2022 GMC Yukon XL
  Associated Documents

  • DownloadMC-11036143-0001.pdf↗
• August 11, 2026•Document ID: 11036475

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.40

  Date Added:

  August 31, 2026

  Manufacturer:

  CHEVROLET

  Summary

  Fewer unnecessary service messages, warning light activations, and automated OnStar calls from your vehicle

  Associated Products (2)

  2025 Chevrolet Silverado2025 GMC Sierra
  Associated Documents

  • DownloadMC-11036475-0001.pdf↗
• August 8, 2026•Document ID: 11036470

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.20

  Date Added:

  August 31, 2026

  Manufacturer:

  GMC

  Summary

  • Improvements to active cabin ventilation • Additional protection for the health of your battery • Improvements to the software update system • Fixes to help ensure proper functionality for heating and cooling features. • Improvements to night mode lights for shifting gears. • Fixes for Daytime Running Lamps turning on when set to Off. • Fixes to help prevent erroneous missing key messages on driver display. • Fixes for accuracy of low tire pressure alert. • Fixes for speed threshold for pedestrian alerts. • Improvements to help reduce check engine light activation and emissions system messages. • Improves behavior of aero shutter system in freezing temperatures • Improvements to reliability when extending the running boards on your vehicle.

  Associated Products (2)

  2025 Chevrolet Silverado2025 GMC Sierra
  Associated Documents

  • DownloadMC-11036470-0001.pdf↗
• August 7, 2026•Document ID: 11036196

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6031B

  Date Added:

  August 14, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates an issue where an aftermarket autostop device or rear taillights is causing a dead battery.

  Associated Products (10)

  2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-11036196-0001.pdf↗
• August 5, 2026•Document ID: 11036471

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.21

  Date Added:

  August 31, 2026

  Manufacturer:

  GMC

  Summary

  • Fixes to help ensure proper functionality for heating and cooling features. • Improvements to night mode lights for shifting gears. • Fixes for Daytime Running Lamps turning on when set to Off. • Fixes to help prevent erroneous missing key messages on driver display. • Fixes for accuracy of low tire pressure alert. • Fixes for speed threshold for pedestrian alerts. • Improvements to start reliability and reduced check engine light activation • Improvements to turbo system diagnostics • Improvements to reliability when extending the running boards on your vehicle • Improves transmission diagnostic software. • Reduces unnecessary check engine light activations. • Fixes to help extend coolant valve life through diagnostic changes

  Associated Products (2)

  2025 Chevrolet Silverado2025 GMC Sierra
  Associated Documents

  • DownloadMC-11036471-0001.pdf↗