GMC Sierra Service Bulletins

10,013 manufacturer communications on file.

• July 17, 2026•Document ID: 11035133

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6473F

  Date Added:

  July 21, 2026

  Manufacturer:

  GMC

  Summary

  This PI was created to help avoid unnecessary front camera module replacements

  Associated Products (16)

  2026 Chevrolet Silverado2026 GMC Sierra2025 Chevrolet Silverado2025 GMC Sierra2024 Chevrolet Silverado2024 GMC Sierra2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-11035133-0001.pdf↗
• July 16, 2026•Document ID: 11035390

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.20

  Date Added:

  July 31, 2026

  Manufacturer:

  CHEVROLET

  Summary

  • Improvements to active cabin ventilation • Additional protection for the health of your battery • Updates to help prevent excessive battery drain and overheating • Improvements to the software update system • 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)

  2025 Chevrolet Silverado2025 GMC Sierra
  Associated Documents

  • DownloadMC-11035390-0001.pdf↗
• July 15, 2026•Document ID: 11035387

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.30

  Date Added:

  July 31, 2026

  Manufacturer:

  CHEVROLET

  Summary

  • Improvements to the infotainment system from Android update. This Android update removes Alexa Built-in (if supported). Google Assistant will remain available • Fixes to improve responsiveness for the center display, driver display, and camera • Fixes for Apple CarPlay functionality and connectivity (if supported) • Fixes to help ensure proper functionality for Bluetooth • Improvements to audio system performance

  Associated Products (2)

  2024 Chevrolet Silverado2024 GMC Sierra
  Associated Documents

  • DownloadMC-11035387-0001.pdf↗
• July 15, 2026•Document ID: 11035386

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.30

  Date Added:

  July 31, 2026

  Manufacturer:

  CHEVROLET

  Summary

  • Surround Vision Recorder, a new feature that allows you to record, watch, and save video from your vehicle's cameras • Improvements to system responsiveness • Improvements to camera image clarity • Fixes to prevent blank screens and audio drop-outs • Improvements to vehicle software update installation

  Associated Products (2)

  2026 Chevrolet Silverado2026 GMC Sierra
  Associated Documents

  • DownloadMC-11035386-0001.pdf↗
• July 14, 2026•Document ID: 11035456

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.21

  Date Added:

  August 1, 2026

  Manufacturer:

  GMC

  Summary

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

  Associated Products (2)

  2026 Chevrolet Silverado2026 GMC Sierra
  Associated Documents

  • DownloadMC-11035456-0001.pdf↗
• July 14, 2026•Document ID: 11035454

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.10

  Date Added:

  August 1, 2026

  Manufacturer:

  CHEVROLET

  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

  Associated Products (2)

  2026 Chevrolet Silverado2026 GMC Sierra
  Associated Documents

  • DownloadMC-11035454-0001.pdf↗
• July 14, 2026•Document ID: 11035129

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6081C

  Date Added:

  July 21, 2026

  Manufacturer:

  GMC

  Summary

  This Pi is to let dealer know that a program issue has been released and to not replace any hard for codes P2C8A, P2C8B, U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, U357F, U3580, U3581, U3582, U3583, U3584, U2BAA, U2BAB, U2BAC, U2BAD, U2BAE,

  Associated Products (21)

  2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Chevrolet BrightDrop2026 Chevrolet Silverado2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Sierra2025 Cadillac Escalade IQ2025 Chevrolet BrightDrop2025 Chevrolet Silverado2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2025 GMC Sierra2024 BrightDrop Zevo2024 Chevrolet Silverado2024 GMC Hummer EV Pickup2024 GMC Hummer EV SUV2024 GMC Sierra2023 BrightDrop Zevo2023 GMC Hummer EV Pickup+ 1 more
  Associated Documents

  • DownloadMC-11035129-0001.pdf↗
• July 13, 2026•Document ID: 11035127

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5767B

  Date Added:

  July 21, 2026

  Manufacturer:

  GMC

  Summary

  This PI provides a diagnostic tip on poor a/c performance due to a condenser issue and instructions to replace the ac condenser.

  Associated Products (16)

  2026 Chevrolet Silverado2026 GMC Sierra2025 Chevrolet Silverado2025 GMC Sierra2024 Chevrolet Silverado2024 GMC Sierra2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-11035127-0001.pdf↗
• July 13, 2026•Document ID: 11034978

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6455B

  Date Added:

  July 13, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This PI communications information that Engineering is investigating the Service Driver Assist message with current DTC B1B2F Telematics Control Module and U1624 Image Processing Control Module setting.

  Associated Products (4)

  2026 Chevrolet Silverado2026 GMC Sierra2025 Chevrolet Silverado2025 GMC Sierra
  Associated Documents

  • DownloadMC-11034978-0001.pdf↗
• July 13, 2026•Document ID: 11035125

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6529A

  Date Added:

  July 21, 2026

  Manufacturer:

  CHEVROLET

  Summary

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

  Associated Products (18)

  2025 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-11035125-0001.pdf↗
• July 10, 2026•Document ID: 11035455

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.10

  Date Added:

  August 1, 2026

  Manufacturer:

  CHEVROLET

  Summary

  • Improves transmission diagnostic software. • Reduces unnecessary check engine light activations.

  Associated Products (2)

  2024 Chevrolet Silverado2024 GMC Sierra
  Associated Documents

  • DownloadMC-11035455-0001.pdf↗
• July 9, 2026•Document ID: 11035300

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N25-252332

  Date Added:

  July 29, 2026

  Manufacturer:

  CHEVROLET

  Summary

  • Fixes to help prevent loss of functionality for connectivity features such as OnStar, Wi-Fi, Navigation, and Super Cruise.

  Associated Products (13)

  2026 Chevrolet BrightDrop2026 Chevrolet Colorado2026 GMC Canyon2025 Buick Envision2025 Cadillac XT42025 Chevrolet BrightDrop2025 Chevrolet Colorado2025 Chevrolet Silverado2025 GMC Canyon2025 GMC Sierra2024 BrightDrop Zevo2024 Buick Envision2024 Cadillac XT4
  Associated Documents

  • DownloadMC-11035300-0001.pdf↗
• July 8, 2026•Document ID: 11035384

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.20

  Date Added:

  July 31, 2026

  Manufacturer:

  CHEVROLET

  Summary

  • Improvements to active cabin ventilation • Additional protection for the health of your battery • Updates to help prevent excessive battery drain and overheating • Improvements to the software update system • This update contains a required software change to help improve the overall software update and diagnostics process

  Associated Products (2)

  2024 Chevrolet Silverado2024 GMC Sierra
  Associated Documents

  • DownloadMC-11035384-0001.pdf↗
• July 8, 2026•Document ID: 11035377

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.20

  Date Added:

  July 31, 2026

  Manufacturer:

  CHEVROLET

  Summary

  • Improvements to active cabin ventilation • Additional protection for the health of your battery • Updates to help prevent excessive battery drain and overheating • Improvements to the software update system • Improved vehicle performance when driving in Reverse on slippery surfaces • Better One-Pedal Driving performance • Improved accuracy for driver display messages • This update contains a required software change to help improve the overall software update and diagnostics process

  Associated Products (2)

  2026 Chevrolet Silverado2026 GMC Sierra
  Associated Documents

  • DownloadMC-11035377-0001.pdf↗
• July 8, 2026•Document ID: 11034981

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6146A

  Date Added:

  July 13, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates on a software anomaly for a DTC that sets for the incorrect side and how to address that concern.

  Associated Products (17)

  2026 Cadillac Escalade2026 Cadillac Escalade IQL2026 Chevrolet Silverado2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Sierra2025 Cadillac Escalade2025 Chevrolet Silverado2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2025 GMC Sierra2024 Chevrolet Silverado2024 GMC Hummer EV Pickup2024 GMC Hummer EV SUV2024 GMC Sierra2023 GMC Hummer EV Pickup2022 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11034981-0001.pdf↗
• July 6, 2026•Document ID: 11034977

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6532

  Date Added:

  July 13, 2026

  Manufacturer:

  CHEVROLET

  Summary

  The purpose of this PI is to inform dealer technicians of a normal cab pressure relief valve noise to avoid unnecessary part replacement

  Associated Products (16)

  2026 Chevrolet Silverado2026 GMC Sierra2025 Chevrolet Silverado2025 GMC Sierra2024 Chevrolet Silverado2024 GMC Sierra2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-11034977-0001.pdf↗
• June 29, 2026•Document ID: 11034781

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6531

  Date Added:

  July 7, 2026

  Manufacturer:

  GMC

  Summary

  This preliminary information communicates an issue with aftermarket LED lighting causing false front park assist alerts and dealers are to install the factory lighting before performing any in depth diagnostics.

  Associated Products (8)

  2026 Chevrolet Silverado2026 GMC Sierra2025 Chevrolet Silverado2025 GMC Sierra2024 Chevrolet Silverado2024 GMC Sierra2023 Chevrolet Silverado2023 GMC Sierra
  Associated Documents

  • DownloadMC-11034781-0001.pdf↗
• June 29, 2026•Document ID: 11034785

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5910C

  Date Added:

  July 7, 2026

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates an issue with the dome light off switch not working after the BCM goes asleep. Advise dealership it is working as designed.

  Associated Products (22)

  2026 Chevrolet Silverado2026 GMC Sierra2025 Chevrolet Silverado2025 GMC Sierra2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Sierra2024 GMC Yukon2024 GMC Yukon XL2023 Chevrolet Silverado2023 Chevrolet Suburban2023 Chevrolet Tahoe2023 GMC Sierra2023 GMC Yukon2023 GMC Yukon XL2022 Chevrolet Silverado2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 GMC Sierra+ 2 more
  Associated Documents

  • DownloadMC-11034785-0001.pdf↗
• June 29, 2026•Document ID: 11034778

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6476C

  Date Added:

  July 7, 2026

  Manufacturer:

  GMC

  Summary

  This preliminary information communicates an issue with a Service Brake system message and DTC C055F due to a low battery condition. Dealer are to inspect the battery, battery connections and for any aftermarket devices.

  Associated Products (40)

  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 XL2024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Silverado2024 Chevrolet Suburban+ 20 more
  Associated Documents

  • DownloadMC-11034778-0001.pdf↗
• June 24, 2026•Document ID: 11034767

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5544J

  Date Added:

  July 7, 2026

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates information on a hydraulic rush type noise from the power steering gear. This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made.  The noise is most noticeable in the cab at idle, in park, with all accessories turned off.

  Associated Products (22)

  2026 Chevrolet Silverado2026 GMC Sierra2025 Chevrolet Silverado2025 GMC Sierra2024 Chevrolet Silverado2024 GMC Sierra2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra2018 Chevrolet Silverado2018 GMC Sierra2017 Chevrolet Silverado2017 GMC Sierra+ 2 more
  Associated Documents

  • DownloadMC-11034767-0001.pdf↗