2026 GMC Hummer EV Pickup TSBs
129 Technical Service Bulletins across 14 categories
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Other
32 bulletinsThis preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements.
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They should follow the notes mentioned prior to anything being replaced.
This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This Preliminary information communicates to the technicians a diagnostic tip if a technician loses communication with...
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the image processor #2 and how to restore communication
This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
This PI states that if SDGM DTC P0604/P0607 is set and no other SDGM DTCs are present, clear DTCs and reset the SDGM.
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Advises of how to contact PQC to authorize SDGM replacement.
This Pi is to let dealer know that a program issue has been released and to not replace any hard for codes P2C8A, P2C8B,...
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U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, U357F, U3580, U3581, U3582, U3583, U3584, U2BAA, U2BAB, U2BAC, U2BAD, U2BAE,
This PI provides diagnostic steps for dealer technicians to verify the condition and ensure that part replacement is...
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necessary
Pi created to provide GM dealers with information on gathering information for projection issue
This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical...
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Assistance Case in CX Connect.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This Pi is to let dealer know that a program issue has been released and to not replace any hard for codes P2C8A, P2C8B,...
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U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, U357F, U3580, U3581, U3582, U3583, U3584, U2BAA, U2BAB, U2BAC, U2BAD, U2BAE,
This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements.
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They should follow the notes mentioned prior to anything being replaced.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements.
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They should follow the notes mentioned prior to anything being replaced.
This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements.
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They should follow the notes mentioned prior to anything being replaced.
A vehicle may come in with B3A6B set in history.
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Tech is directed to clear code and advise the customer an OTA will be released for the code.
New Vehicle Monitoring Programs Section in IVH
A vehicle may come in with B3A6B set in history.
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Tech is directed to clear code and advise the customer an OTA will be released for the code.
A vehicle may come in with B3A6B set in history.
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Tech is directed to clear code and advise the customer an OTA will be released for the code.
This Pi is to let dealer know that a program issue has been released and to not replace any hard for codes P2C8A, P2C8B,...
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U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, U357F, U3580, U3581, U3582, U3583, U3584, U2BAA, U2BAB, U2BAC, U2BAD, U2BAE,
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This Preliminary information communicates an issue with super cruise unavailable due to the driver's monitoring camera...
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and dealers to replace the camera.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini...
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50 terminal test probe, replacement terminals, and terminated leads.
This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication...
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configuration did not complete correctly.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini...
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50 terminal test probe, replacement terminals, and terminated leads.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini...
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50 terminal test probe, replacement terminals, and terminated leads.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini...
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50 terminal test probe, replacement terminals, and terminated leads.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini...
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50 terminal test probe, replacement terminals, and terminated leads.
Electrical
32 bulletinsAfter this update, you may need to turn your Turn Signal Activated View setting back on Fixes to help ensure start...
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reliability and prevent battery drain Updates to enable memory seat buttons to be linked to a user profile. Up to two user profiles can be linked to your vehicle's memory seat buttons. Improved charging performance and messages Better performance and reliability of wireless phone charging
After this update, you may need to turn your Turn Signal Activated View setting back on Fixes to help ensure start...
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reliability and prevent battery drain Updates to enable memory seat buttons to be linked to a user profile. Up to two user profiles can be linked to your vehicle's memory seat buttons. Improved charging performance and messages Better performance and reliability of wireless phone charging
If a vehicle has an issue with super cruise inoperative tech is directed to follow a diagnostic path before replacing...
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the Image processing module.
Improvements to system responsiveness Improvements to camera image clarity Fixes to prevent blank screens and audio...
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drop-outs Improvements to vehicle software update installation Additional protection for battery health and to help prevent battery drain Improved charging messaging in the driver display Improved vehicle diagnostics Improved vehicle performance when driving in Reverse on slippery surfaces Better One-Pedal Driving performance Additional protection for battery health and prevention for battery drain Improved accuracy for driver display message Updates to allow drive mode selection from the center display
The Battery Energy Control Module (BECM) in certain vehicles include battery-monitoring software.
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An update is available for this software that improves the BECMs ability to detect moisture inside the RESS enclosure. Dealers are to reprogram the BECM with the updated software.
Certain vehicles listed above may have a condition in which the Vehicle Leveling Module (VLM) may enter a faulted state...
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during normal vehicle operation due to a software calibration issue. Dealers will reprogram the Vehicle Leveling Module (VLM). Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates.
Additional protection for battery health and to help prevent battery drain Improved charging messaging in the driver...
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display Improved vehicle diagnostics Improved vehicle performance when driving in Reverse on slippery surfaces Better One-Pedal Driving performance Additional protection for battery health and prevention for battery drain Improved accuracy for driver display message
Updates to ensure correct speed limit in the driver display Improvements to driver display messages Additional...
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protection to help prevent battery drain
If a vehicle has an issue with super cruise inoperative tech is directed to follow a diagnostic path before replacing...
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the Image processing module.
This Preliminary information communicates to dealership technicians that if they encounter a customer vehicle with this...
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concern, to perform the steps listed and should be able to reprogram the module and correct this.
This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not...
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correct it.
This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not...
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correct it.
Surround Vision Recorder, a new feature that allows you to record, watch, and save video from your vehicle's cameras.
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Security Recording, a new feature that can automatically begin recording if your vehicle's alarm is triggered while it is parked. Fixes to help ensure responsiveness for the driver display and rear view camera. Fixes to help ensure proper Super Cruise lane change functionality. Improvements to the performance of Bose AudioPilot to better counteract road and ambient noise. Your towing experience is improving by preventing enabling King Crab mode when a trailer is attached. When towing a trailer, you will now experience less trailer sway. This update will help prevent One-Pedal Driving from deactivating after you remote start your vehicle. Fixes to help ensure successful vehicle software updates. Improvements to performance for under-hood storage opening. Fixes to help ensure the swing gate opens and closes properly. Fixes to help ensure proper functionality of Forward Collision Alert and availability of driver assistance features.
Improvements to help protect battery health in low temperatures.
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Improvements to diagnostics to reduce service messages. Fixes to help protect battery health in high temperatures. Fixes to improve responsiveness for vehicle diagnostics.
This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not...
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correct it.
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no...
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DTC'ss
This PI provides diagnostics tips to dealership techs when trying to diagnose a CAN Bus communication issue after an...
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event like a lightning strike, battery jump started backwards, failure over the air update, etc.
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no...
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DTC's
"This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.
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It also informs them to follow the bulletins as necessary to USB update the modules."
This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.
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It also informs them to follow the bulletins as necessary to USB update the modules.
This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not...
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correct it.
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no...
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DTC's
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no...
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DTC's
The Driver Information Center may display a message of Transport Mode On after the ignition is cycled.
This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission...
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information.
This information provides software update information for the K73 Telematics module to correct the symptoms described.
This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission...
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information.
If a vehicle has an issue with super cruise inoperative tech is directed to follow a diagnostic path before replacing...
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the Image processing module.
This information provides software update information for the K73 Telematics module to correct the symptoms described.
This Preliminary Information communication provides information to the technician about vehicles that have an...
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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.
This information provides software update information for the K73 Telematics module to correct the symptoms described.
This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use...
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for certain repairs, such as Wiring Harness Repairs.
Infotainment
21 bulletinsThis Preliminary information communicates to dealers a procedure to reset the radio.
This update contains a required software change to help improve the overall software update and diagnostics process.
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Be sure to install this update to be able to receive future software updates. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior.
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
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display
This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and...
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how to reset/clear the message.
This Preliminary information communicates to dealers a procedure to reset the radio.
This Preliminary information communicates to dealers a procedure to reset the radio.
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
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display
This Preliminary information communicates to dealers a procedure to reset the radio.
This Preliminary information communicates to dealers a procedure to reset the radio.
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
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display
This Preliminary information communicates to the technician the diagnostic direction needed when the customer complains...
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of SuperCruise Subscription Required Message Displayed on Instrument Cluster.
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
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display
This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back...
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to the vehicle.
This Preliminary information communicates to the technician the repair direction needed to address an inaccurate speed...
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limit sign displayed on instrument cluster.
This Preliminary information communicates to the technician the repair direction needed to address an inaccurate speed...
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limit sign displayed on instrument cluster.
This Preliminary information communicates to dealers a procedure to reset the radio.
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
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display
This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
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display
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
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display
This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and...
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how to reset/clear the message.
Engine
11 bulletinsFog lamp control may be missing from radio display after a BCM update.
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Engineering is investigating.
This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on...
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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.
This preliminary information is to inform technicians and customers that the voice command will be inoperative when trying to open applications.
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Engineering is investigating and this PI will be converted to a bulletin when a repair is available.
This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on...
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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.
Service Update. Certain vehicles listed above may be missing a high voltage header plug on the RESS battery pack drive motor connector.
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Dealers are to inspect the RESS pack connectors and install the proper HV Header Plug if missing.
This PI communicates information that the Collision / Detection Systems will revert to default setting of Alert and...
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Brake after an Ignition Cycle due to an Engineering change.
This Preliminary Information communication provides information to the technician about vehicles that have had multiple...
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repair attempts that are being performed on customers vehicles that exhibit vibration conditions without utilizing the support of General Motors Technical Assistance Center. If valid vibration frequency or Road Force Variation data has been collected and a repair attempt does not correct the customer complaint, contact General Motors Technical Assistance Center for further support. For any vehicles that remains unrepaired after being at the dealer for three days or more and a related bulletin or PI is not found, contact General Motors Technical Assistance Center for further support.
This Preliminary information communicates ordering process for the front and rear drive units are on restriction for all...
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listed EV vehicles for engineering review.
This PI communicates information that the Collision / Detection Systems will revert to default setting of Alert and...
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Brake after an Ignition Cycle due to an Engineering change.
This Preliminary Information communication provides information to the technician about fluid leaking from the brake...
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caliper piston area found during a service of the vehicle. The substance is actually excess assembly grease from the caliper boot and piston.
This preliminarily information communication an issue with the supercruise dropping out when next to a merging lane and...
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engineering is investigating.
Software & Calibration
10 bulletinsThis Preliminary information communicates how to resolve a issue where a vehicle is not receiving OTA updates
This preliminary PI was created to advise techniians in the field that they will not be able to perform a GDS automated...
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bleed with the scan tool dues to a issue with the software in the scan tool
Improvements to vehicle software updates
This preliminary information is to inform technicians and customers that GM is aware of the issue and the vehicle can still be driven.
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When a repair is available, this PI will be updated.
This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost...
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left or right side object detection alerts.
This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost...
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left or right side object detection alerts.
This Preliminary information communicates on a software anomaly for a DTC that sets for the incorrect side and how to...
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address that concern.
This preliminary PI was created to advise techniians in the field that they will not be able to perform a GDS automated...
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bleed with the scan tool dues to a issue with the software in the scan tool
Improvements to the performance of vehicle software updates.
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Fixes to help prevent loss of functionality for connectivity features, including maps and Wi-Fi. Fixes to help prevent erroneous emergency calls from vehicle. Fixes to help ensure proper functionality for mobile app features. Improvements to the performance of Super Cruise.
This Preliminary information communicates to the field on a unwanted history DTC that is setting due to a software...
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anomaly.
Body & Paint
7 bulletinsThis PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position...
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after curbview assist is used.
This Preliminary Information communicates possible conditions arising from corrosion on the JX310 splice pack that could...
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affect vehicle operation including the ability to start, drive, charge their EV.
This Preliminary information communicates that the Tailgate Assist Handle is not included with certain truck models and...
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how to get one if needed.
This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position...
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after curbview assist is used.
This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position...
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after curbview assist is used.
PI was created to let dealers know that the underbody deflector are no longer standard equipment and they can ordered...
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separately upon customer request.
This Preliminary information communicates a diagnostic tip on how to resolve a issue of the horn sounding when vehicle...
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doors are being closed and the key in vehicle reminder set to off.
Pre-Delivery & Maintenance
5 bulletinsThis PI advise dealers If U3000 is present, follow the correct service doc by Symptom Byte before contacting PQC; if not...
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present, verify the camera is clean, then contact PQC if no issue is found.
This warranty administration bulletin provides information for dealers/technicians on System Reset and Connector...
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Reconnect Labor Code Numbers.
This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance...
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programs.
This warranty administration bulletin provides information for dealers/technicians on System Reset and Connector...
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Reconnect Labor Code Numbers.
The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for...
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causing multiple customer concerns that do not have other diagnostic methods to identify them.
Brakes
3 bulletinsImprovements to the performance of Brake Assist.
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Fixes to help ensure proper Super Cruise lane change functionality.
Improvements to the performance of Bose AudioPilot to better counteract road and ambient noise.
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Your towing experience is improving by preventing enablement of King Crab mode when a trailer is attached. When towing a trailer, you will now experience less trailer sway. This update will help prevent One-Pedal Driving from deactivating after you remote start your vehicle. Fixes to help ensure proper functionality for Brake Assist. Fixes to help ensure successful vehicle software updates. Improvements to performance for under-hood storage opening Fixes to help ensure the swing gate opens and closes properly. Fixes to help ensure proper functionality of Forward Collision Alert and availability of driver assistance features.
This service bulletin provides information for the technicians to use a Customer Concern Verification sheet to...
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facilitate the questions needing to be answered by the customer regarding Automatic Emergency Braking (AEB) issues.
Tires & Wheels
2 bulletinsThis preliminary information communicates information about how to determine if a wheel and tires size change is...
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available.
This service bulletin provides information on Tire Sidewall Irregularities.
Fuel System
2 bulletinsThis PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and...
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advises of warranty direction.
This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for...
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analysis.
HVAC & Climate
1 bulletinPI to help diagnose A/C concern
Hybrid & EV
1 bulletinCertain vehicles may have 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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Dealers are to provide the customer with the latest design charging adapter.
Lighting
1 bulletinThis Preliminary information communicates information on vehicle speed being limited due to aftermarket lower kit being...
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installed on the vehicle.
Air Bags & Safety
1 bulletinThis Preliminary information communicates assistance in locating the Rear seat belt comfort guides in the parts catalog.