Service bulletins for the 2023 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.
641 on file from NHTSA, as of 2026-10-19.
About C1197 on the 2023 GMC Hummer EV Pickup: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
By topic
Only bulletins with trouble code: C1197 are shown. Show all
| PIT6144G | 2025-04-29. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates A diagnostic tip from root causing DTC: C1197 SYM 92 caused by a pinched air inlet hose to the suspension compressor air leveling system or internal software concern |
|---|---|
| PIT6144F | 2025-03-02. Service bulletin. SUSPENSION. This Preliminary information communicates A diagnostic tip from root causing DTC: C1197 SYM 92 caused by a pinched air inlet hose to the suspension compressor air leveling system or internal issue with compressor assembly. |
| PIT6144E | 2025-02-18. Service bulletin. SUSPENSION. This Preliminary information communicates A diagnostic tip from root causing DTC: C1197 SYM 92 caused by a pinched air inlet hose to the suspension compressor air leveling system or internal issue with compressor assembly. |
| PIT6144D | 2025-02-03. Service bulletin. SUSPENSION. This Preliminary information communicates A diagnostic tip from root causing DTC: C1197 SYM 92 caused by a pinched air inlet hose to the suspension compressor air leveling system or internal issue with compressor assembly. |
| PIT6144A | 2024-08-14. Service bulletin. SUSPENSION. This Preliminary information communicates A diagnostic tip from root causing DTC: C1197 caused by a pinched air inlet hose to the suspension compressor air leveling system. |
| PIT6144 | 2024-04-15. Service bulletin. SUSPENSION; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC). This Preliminary information communicates A diagnostic tip from root causing DTC: C1197 caused by a pinched air inlet hose to the suspension compressor air leveling system. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.