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.
About P0494 on the 2022 GMC Hummer EV Pickup: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
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Only bulletins with trouble code: P0494 are shown. Show all
| PIT5925B | 2023-05-15. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. This Preliminary information communicates to the field that water hitting the cooling fans can set a false DTC: P0494 for the 2022-2024 HUMMER EV. |
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| PIT5925A | 2023-04-17. Service bulletin. EQUIPMENT:ELECTRICAL. This Preliminary information communicates to the field that water hitting the cooling fans can set a false DTC: P0494 for the 2022-2023 HUMMER EV. |
| PIT5925 | 2022-08-15. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:COOLING SYSTEM. This Preliminary information communicates to the field that water hitting the cooling fans can set a false DTC: P0494 for the new 2022 HUMMER EV. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.