2026 GMC Hummer EV SUV technical service bulletins
133 technical service bulletins and manufacturer communications cover the 2026 GMC Hummer EV SUV.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
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- If a vehicle has an when attempting to perform a vehicle dynamic sensor learn, the scan tool may display a...
- This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a...
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- Customer Satisfaction Program
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- This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- If a vehicle has an issue with super cruise inoperative tech is directed to follow a diagnostic path...
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- • After this update, you may need to turn your Turn Signal Activated View setting back on • Fixes to help...
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- This update contains a required software change to help improve the overall software update and...
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- The Battery Energy Control Module (BECM) in certain vehicles include battery-monitoring software
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- This PI states that if SDGM DTC P0604/P0607 is set and no other SDGM DTCs are present, clear DTCs and...
- This PI advise dealers If U3000 is present, follow the correct service doc by Symptom Byte before...
- This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set...
- Condition in which the Vehicle Leveling Module (VLM) may enter a faulted state during normal vehicle...
- PI to help diagnose A/C concern
- This Pi is to let dealer know that a program issue has been released and to not replace any hard for codes...
- • Improvements to system responsiveness • Improvements to camera image clarity • Fixes to prevent blank...
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- • Additional protection for battery health and to help prevent battery drain • Improved charging messaging...
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- • Updates to ensure correct speed limit in the driver display • Improvements to driver display messages •...
- This PI provides diagnostic steps for dealer technicians to verify the condition and ensure that part...
- Fog lamp control may be missing from radio display after a BCM update
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- Pi created to provide GM dealers with information on gathering information for projection issue
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- Service Update
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- • Improvements to the performance of Bose AudioPilot to better counteract road and ambient noise
- • Improvements to the performance of Brake Assist
- • Surround Vision Recorder, a new feature that allows you to record, watch, and save video from your...
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- Been sold with a GM NACS Level 2 EV charging adapter (NACS to J1772) in which a quality issue was identified
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- • Improvements to help protect battery health in low temperatures
- • Improvements to the performance of vehicle software updates
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- This PI provides diagnostics tips to dealership techs when trying to diagnose a CAN Bus communication...
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- This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered...
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- This PI communicates information that the Collision / Detection Systems will revert to default setting of...
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- The Driver Information Center may display a message of Transport Mode On after the ignition is cycled.
- This information provides software update information for the K73 Telematics module to correct the...
- A vehicle may come in with B3A6B set in history
- New Vehicle Monitoring Programs Section in IVH
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- This preliminarily information communication an issue with the supercruise dropping out when next to a...
- This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and...
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- PI was created to let dealers know that the underbody deflector are no longer standard equipment and they...
- This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
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- This service bulletin provides information on Tire Sidewall Irregularities.
- This service bulletin provides information for the technicians to use a Customer Concern Verification...
- This warranty administration bulletin provides information for dealers/technicians on System Reset and...
- This warranty administration bulletin provides policy information for GM courtesy transportation and...
- This service bulletin provides information on the proper Reflective High Temperature Heat and/or...
- The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential...
- This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be...
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