There have been 6 technical service bulletins issued for the 1991 GMC P Series.
| Bulletin Date: | Jan. 1, 2000 |
| Component: | Gasoline engine. |
| Bulletin Summary: | Subject regarding a hard, no start or excessive gray or white smoke condition on start up after recent glow plug replacement. |
| Vehicles covered in this TSB: |
1982 Chevrolet C Series,
1983 Chevrolet C Series,
1984 Chevrolet C Series,
1985 Chevrolet C Series,
1986 Chevrolet C Series,
1987 Chevrolet C Series,
1988 Chevrolet C Series,
1989 Chevrolet C Series,
1990 Chevrolet C Series,
1991 Chevrolet C Series,
1992 Chevrolet C Series,
1993 Chevrolet C Series,
1994 Chevrolet C Series,
1995 Chevrolet C Series,
1996 Chevrolet C Series,
|
| Bulletin Date: | May. 5, 1998 |
| Component: | Engine. |
| Bulletin Summary: | Comments on engine exhaust noise which is normally loudest during cold engine operation. |
| Vehicles covered in this TSB: |
1991 Chevrolet Malibu,
1992 Chevrolet Malibu,
1993 Chevrolet Malibu,
1993 GMC B7,
1995 GMC B7,
1991 GMC C6,
1992 GMC C6,
1993 GMC C6,
1995 GMC C6,
1991 GMC C7,
1992 GMC C7,
1993 GMC C7,
1995 GMC C7,
1991 GMC P Series,
1992 GMC P Series,
1993 GMC P Series,
1994 GMC P Series,
1995 GMC P Series.
|
| Bulletin Date: | Feb. 1, 1998 |
| Component: | Cooling exhaust system. |
| Bulletin Summary: | Vehicles with 6. 0l and 7. 0l engines (vins p, m - rpos ls0, lr0) may exhibit engine exhaust noise which is loudest during cold engine operation. |
| Vehicles covered in this TSB: |
1991 Chevrolet B7,
1992 Chevrolet B7,
1993 Chevrolet B7,
1994 Chevrolet B7,
1995 Chevrolet B7,
1991 Chevrolet C6,
1992 Chevrolet C6,
1993 Chevrolet C6,
1994 Chevrolet C6,
1995 Chevrolet C6,
1991 Chevrolet C7,
1992 Chevrolet C7,
1993 Chevrolet C7,
1994 Chevrolet C7,
1995 Chevrolet C7,
|
| Bulletin Date: | Feb. 1, 1995 |
| Component: | Gasoline engine. |
| Bulletin Summary: | cold engine knock. |
| Vehicles covered in this TSB: |
1990 Chevrolet Astro,
1991 Chevrolet Astro,
1992 Chevrolet Astro,
1993 Chevrolet Astro,
1994 Chevrolet Astro,
1990 Chevrolet C Series(light),
1991 Chevrolet C Series(light),
1992 Chevrolet C Series(light),
1993 Chevrolet C Series(light),
1994 Chevrolet C Series(light),
1990 Chevrolet G Series,
1991 Chevrolet G Series,
1992 Chevrolet G Series,
1993 Chevrolet G Series,
1994 Chevrolet G Series,
|
| Bulletin Date: | Jan. 1, 1995 |
| Component: | Manifold/header/muffler/tail pipe. |
| Bulletin Summary: | new cast iron exhaust manifold and stainless steel gasket to correct engine noise condition. |
| Vehicles covered in this TSB: |
1982 Chevrolet C Series (light),
1983 Chevrolet C Series (light),
1984 Chevrolet C Series (light),
1985 Chevrolet C Series (light),
1986 Chevrolet C Series (light),
1987 Chevrolet C Series (light),
1988 Chevrolet C Series (light),
1989 Chevrolet C Series (light),
1990 Chevrolet C Series (light),
1991 Chevrolet C Series (light),
1992 Chevrolet C Series (light),
1993 Chevrolet C Series (light),
1994 Chevrolet C Series (light),
1995 Chevrolet C Series (light),
1982 Chevrolet G Series,
|
| Bulletin Date: | Dec. 1, 1994 |
| Component: | Unknown or other. |
| Bulletin Summary: | oil pressure gauge reading concerns. |
| Vehicles covered in this TSB: |
1991 Chevrolet Astro,
1992 Chevrolet Astro,
1993 Chevrolet Astro,
1994 Chevrolet Astro,
1991 Chevrolet Blazer,
1992 Chevrolet Blazer,
1993 Chevrolet Blazer,
1994 Chevrolet Blazer,
1991 Chevrolet C Series(light),
1992 Chevrolet C Series(light),
1993 Chevrolet C Series(light),
1994 Chevrolet C Series(light),
1991 Chevrolet G Series,
1992 Chevrolet G Series,
1993 Chevrolet G Series,
|
Also see
GMC vehicle common problems.