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April 1, 2026 Service campaign

Service Update

Chevrolet technical service bulletin N252529080 for 2024-2026 Chevrolet Silverado EV, 2024-2026 GMC Hummer EV SUV and 2024-2026 GMC Sierra EV and others.

Bulletin number
N252529080 (N252529080)
Component
Electrical system
Summary
Service Update. Certain vehicles listed above may be missing a high voltage header plug on the RESS battery pack drive motor connector. Dealers are to inspect the RESS pack connectors and install the proper HV Header Plug if missing.

Owners of these vehicles have filed 39 complaints in the electrical category.

Vehicles covered

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