Service bulletins for the 1991 GMC Safari
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.
9 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Engine are shown. Show all
| 376105 | 1995-11-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. COLD ENGINE KNOCK. *TW |
|---|---|
| CAMP/91C50 | 1995-11-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. UNKNOWN |
| RCL/91C50 | 1995-02-28. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. CALIFORNIA RECALL - GENERAL MOTORS HAS DETERMINED THAT CERTAIN 1991 C/K TRUCKS, M/L AND G VANS WITH 4.3L ENGINES MAY BE EMITTING NON-METHANE HYDROCARBONS IN EXCESS OF CALIFORNIA EMISSION STANDARDS. TO CORRECT THIS CONDITION, DEALERS ARE TO INSTALL A NEW EXHAUST OXYGEN SENSOR. *TW |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.