GMC Hummer EV Pickup Service Bulletins
921 manufacturer communications on file.
- August 21, 2025•Document ID: 11022134Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6424
- Date Added:
- August 26, 2025
- Manufacturer:
- CADILLAC
SummaryA vehicle may come in with B3A6B set in history. Tech is directed to clear code and advise the customer an OTA will be released for the code.
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- Mfr Comm. #:
- PIT6213C
- Date Added:
- August 26, 2025
- Manufacturer:
- GMC
SummaryThis Preliminary information communicates that the Tailgate Assist Handle is not included with certain truck models and how to get one if needed.
Associated Products (3)Associated Documents - August 15, 2025•Document ID: 11022080Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6602H
- Date Added:
- August 22, 2025
- Manufacturer:
- CHEVROLET
SummaryThis Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
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- Mfr Comm. #:
- PIP4902T
- Date Added:
- August 22, 2025
- Manufacturer:
- CADILLAC
SummaryThis preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
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- Mfr Comm. #:
- PIT6059C
- Date Added:
- August 22, 2025
- Manufacturer:
- CADILLAC
SummaryThis Preliminary information communicates an issue with super cruise unavailable due to the driver's monitoring camera and dealers to replace the camera.
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- Mfr Comm. #:
- PIC5650M
- Date Added:
- August 12, 2025
- Manufacturer:
- CHEVROLET
SummaryThis 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, B3935, C0750, C0755, C0760, C0765, and/or C0775.
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- Mfr Comm. #:
- PIT6419
- Date Added:
- August 4, 2025
- Manufacturer:
- GMC
SummaryPI was created to let dealers know that the underbody deflector are no longer standard equipment and they can ordered separately upon customer request.
Associated Products (3)Associated Documents - July 30, 2025•Document ID: 11021285Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6602G
- Date Added:
- August 4, 2025
- Manufacturer:
- GMC
SummaryThis Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
Associated Products (15)Associated Documents - July 24, 2025•Document ID: 11020960Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6602F
- Date Added:
- July 30, 2025
- Manufacturer:
- GMC
SummaryThis Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
Associated Products (15)Associated Documents - July 18, 2025•Document ID: 11021063Over The AirUNKNOWN OR OTHER
- Mfr Comm. #:
- N25-250378 (V652.50)
- Date Added:
- July 31, 2025
- Manufacturer:
- GMC
SummaryThis software update includes the following, if your vehicle is equipped: • Improvements to vehicle diagnostics. • Fixes to preserve battery life and improve charging. • Fixes to address issues with shifting. • Fixes for vehicle airflow in icy conditions. • Improvements to HVAC compressor performance. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
Associated Products (1)Associated Documents - July 18, 2025•Document ID: 11021062Over The AirUNKNOWN OR OTHER
- Mfr Comm. #:
- N25-250378 (V652.21)
- Date Added:
- July 31, 2025
- Manufacturer:
- GMC
SummaryThis software update includes the following, if your vehicle is equipped: • Improvements to vehicle diagnostics. • Fixes to preserve battery life and improve charging. • Fixes to address issues with shifting. • Fixes for vehicle airflow in icy conditions. • Improvements to HVAC compressor performance. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
Associated Products (1)Associated Documents - July 18, 2025•Document ID: 11020816Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIP5601C
- Date Added:
- July 23, 2025
- Manufacturer:
- CADILLAC
SummaryThis PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
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- Mfr Comm. #:
- PIP5601B
- Date Added:
- July 23, 2025
- Manufacturer:
- BUICK
SummaryThis PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
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- Mfr Comm. #:
- PIT5074S
- Date Added:
- July 23, 2025
- Manufacturer:
- CADILLAC
SummaryThis Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
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- Mfr Comm. #:
- PIT6411
- Date Added:
- July 14, 2025
- Manufacturer:
- CHEVROLET
SummaryThis information provides software update information for the K73 Telematics module to correct the symptoms described.
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- Mfr Comm. #:
- PIC6602E
- Date Added:
- July 1, 2025
- Manufacturer:
- GMC
SummaryThis Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
Associated Products (15)Associated Documents - June 30, 2025•Document ID: 11019983Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6404
- Date Added:
- July 1, 2025
- Manufacturer:
- CADILLAC
SummaryThis Preliminary Information communicates the DTC's setting in the SDGM are false, steps to resolve and not to replace the module.
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- Mfr Comm. #:
- PIT5832V
- Date Added:
- June 30, 2025
- Manufacturer:
- BUICK
SummaryThis Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
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- Mfr Comm. #:
- N25-249834 (652.40)
- Date Added:
- July 1, 2025
- Manufacturer:
- GMC
SummarySoftware Update for your 25MY GMC Hummer EV •Fixes for audio system performance. •Improvements to connectivity for Bluetooth. •Fixes to help ensure successful software updates and notifications. •Fixes to address instances of inactive driver display. •Improvements to functionality for USB and steering wheel controls. •Improvements to leveling corrections. •Improvements to the performance of Super Cruise. •Improvements to the opening power of the rear power gate. •Fixes to address antilock braking system responsiveness. •Improvements to the performance of One-Pedal Driving. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
Associated Products (1)Associated Documents - June 20, 2025•Document ID: 11019831Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6602D
- Date Added:
- June 30, 2025
- Manufacturer:
- CHEVROLET
SummaryThis Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
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