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Service bulletins for the 2022 GMC Hummer EV Pickup

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

731 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
22-NA-2472023-05-04. Service bulletin. SERVICE BRAKES; ELECTRICAL SYSTEM. This service bulletin provides information to dealership personnel that after performing a brake inspection, brake pad replacement, or any other repair that requires the caliper piston to be reseated may be causing DTC C05B0 to falsely set for eBoost applications.
23-NA-0642023-05-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
20-NA-1322023-05-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
N2223849302023-04-25. Service bulletin. ELECTRICAL SYSTEM. Customer Satisfaction Program - certain vehicles may have a “Service Trailer Brake” message set when a trailer with electric brakes is connected and the driver attempts to use the manual apply slider on switch or depress the brake pedal while towing. Dealers are to replace the Trailer Brake Control Switch.
PIT5832G2023-04-17. Service bulletin. BACK OVER PREVENTION; ELECTRICAL SYSTEM:STARTER ASSEMBLY. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
23-NA-0552023-04-14. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides information on the EL-52800 Diagnostic & Charge Battery Station (DCBS) – FAQs.
22-NA-2352023-04-13. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides repair information to correct a customer concern of Wireless Charging Intermittent When Using iPhone and Samsung Phones at Offset Positions.
22-NA-1142023-04-13. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides information on Forklift and Vehicle Hoist Requirements to Support Electric Vehicle (EV) High Voltage Battery Handling.
22-NA-0832023-04-13. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This service bulletin provides Requirements for Replacement of the Dual Mode Cord Set Under Warranty.
21-NA-0432023-04-13. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; WHEELS; ENGINE AND ENGINE COOLING. This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
PIE0736A2023-04-12. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This engineering information (EI) closure ends the need for further information from technicians in regards to the power tonneau cover being inoperable.
21-NA-0612023-04-12. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides information for dealers on Using EL-52545 When Diagnosing PEPs Transmitter Key Fobs.
23-NA-0442023-03-30. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This service bulletin provides information on AGM batteries that require less frequent charging in storage.
23-NA-0362023-03-30. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This service bulletin provides diagnostic information for dealers/technicians on an Amber Light on Dual Level Portable Charge Cord Set.
PIT59882023-03-13. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates, that is is Possible to plug in 2 A/C sesnors into the wrong harness.
22-NA-0052023-03-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This informational bulletin provides information for dealers/technicians on Information on Opening / Closure Instructions for DDR (Damaged, Defective, Recalled) High Voltage Battery Dunnage / Container.
PIE07362023-02-23. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the power tonneau cover being inoperable.
22-NA-2352023-02-23. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This service bulletin provides repair information to correct a customer concern of Wireless Charging Intermittent When Using Samsung Phones at Offset Positions.
22-NA-2152023-02-21. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This warranty administration bulletin provides policy information for chargers that are covered under the terms of a 3-year Limited Parts Warranty from the date of purchase.
22-NA-1152023-02-21. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention.
N2223849302023-02-13. Service bulletin. ELECTRICAL SYSTEM. Customer Satisfaction Program - certain vehicles may have a “Service Trailer Brake” message set when a trailer with electric brakes is connected and the driver attempts to use the manual apply slider on switch or depress the brake pedal while towing. Dealers are to replace the Trailer Brake Control Switch.
PIT5966A2023-02-13. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
PIT59642023-02-13. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. This Preliminary information communicates to the field how to address a condition twhere the lightening control module locks up and causes the exterior lighting flickering every 8 seconds and you will notice the windshield wipers and the turn signal/click clack noise will pause momentarily followed by DTC: P0607
18-NA-1802023-02-06. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This Warranty Administration Bulletin Provides High Voltage Battery Exchange Process Information.
21-NA-1352023-01-25. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.