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Technical Service Bulletins of the 1994 GMC C Series(light)

There have been 17 technical service bulletins issued for the 1994 GMC C Series(light).

1 1994 GMC C Series(light) ignition module TSB (Bulletin 677153A)

Bulletin Date: Jun. 1, 1997
Component: Ignition module.
Bulletin Summary: No upshift/2nd gear only after cold start-intermittent dtc 87 - high ratio error (replace eprom).
Vehicles covered in this TSB:
1994 Chevrolet C Series(light), 1995 Chevrolet C Series(light), 1994 Chevrolet G Series, 1995 Chevrolet G Series, 1996 Chevrolet G Series, 1994 Chevrolet K Series, 1995 Chevrolet K Series, 1994 Chevrolet P, 1995 Chevrolet P, 1996 Chevrolet P, 1994 GMC C Series(light), 1995 GMC C Series(light), 1994 GMC G Series, 1995 GMC G Series, 1996 GMC G Series, 1994 GMC K Series, 1995 GMC K Series, 1994 GMC P Series, 1995 GMC P Series, 1996 GMC P Series.

2 1994 GMC C Series(light) gas recirculation valve (egr valve) TSB (Bulletin 96067A)

Bulletin Date: Jun. 1, 1997
Component: Gas recirculation valve (egr valve).
Bulletin Summary: Special policy adjustment - linear exhaust gas recirculation system.
Vehicles covered in this TSB:
1992 Chevrolet Astro, 1993 Chevrolet Astro, 1994 Chevrolet Astro, 1992 Chevrolet Blazer, 1993 Chevrolet Blazer, 1994 Chevrolet Blazer, 1992 Chevrolet C Series(light), 1993 Chevrolet C Series(light), 1994 Chevrolet C Series(light), 1992 Chevrolet Lumina, 1993 Chevrolet Lumina, 1994 Chevrolet Lumina, 1992 GMC C Series(light), 1993 GMC C Series(light), 1994 GMC C Series(light), 1992 GMC Jimmy, 1993 GMC Jimmy, 1994 GMC Jimmy, 1992 GMC Safari, 1993 GMC Safari, 1994 GMC Safari.

3 1994 GMC C Series(light) fuel pump TSB (Bulletin 666309)

Bulletin Date: Apr. 1, 1997
Component: Fuel pump.
Bulletin Summary: Engine hard to start (replace fuel pump pulsator).
Vehicles covered in this TSB:
1992 Chevrolet Astro, 1993 Chevrolet Astro, 1994 Chevrolet Astro, 1995 Chevrolet Astro, 1996 Chevrolet Astro, 1992 Chevrolet Blazer, 1993 Chevrolet Blazer, 1994 Chevrolet Blazer, 1995 Chevrolet Blazer, 1996 Chevrolet Blazer, 1993 Chevrolet C Series (light), 1994 Chevrolet C Series (light), 1995 Chevrolet C Series (light), 1996 Chevrolet C Series (light), 1992 Chevrolet C Series(light), 1992 Chevrolet G Series, 1993 Chevrolet G Series, 1994 Chevrolet G Series, 1995 Chevrolet G Series, 1996 Chevrolet G Series, 1992 Chevrolet K Series, 1993 Chevrolet K Series, 1994 Chevrolet K Series, 1995 Chevrolet K Series, 1996 Chevrolet K Series, 1992 Chevrolet Kodiak, 1993 Chevrolet Kodiak, 1994 Chevrolet Kodiak, 1995 Chevrolet Kodiak, 1996 Chevrolet Kodiak, 1992 Chevrolet Lumina, 1993 Chevrolet Lumina, 1994 Chevrolet Lumina, 1995 Chevrolet Lumina, 1996 Chevrolet Lumina, 1992 Chevrolet P, 1993 Chevrolet P, 1994 Chevrolet P, 1995 Chevrolet P, 1996 Chevrolet P, 1992 GMC C Series(light), 1993 GMC C Series(light), 1994 GMC C Series(light), 1995 GMC C Series(light), 1996 GMC C Series(light), 1992 GMC C1500, 1993 GMC C1500, 1994 GMC C1500, 1995 GMC C1500, 1996 GMC C1500, 1992 GMC G Series, 1993 GMC G Series, 1994 GMC G Series, 1995 GMC G Series, 1996 GMC G Series, 1992 GMC Jimmy, 1993 GMC Jimmy, 1994 GMC Jimmy, 1995 GMC Jimmy, 1996 GMC Jimmy, 1992 GMC K Series, 1993 GMC K Series, 1994 GMC K Series, 1995 GMC K Series, 1996 GMC K Series, 1992 GMC P Series, 1993 GMC P Series, 1994 GMC P Series, 1995 GMC P Series, 1996 GMC P Series.

4 1994 GMC C Series(light) gas recirculation valve (egr valve) TSB (Bulletin 96067)

Bulletin Date: Feb. 1, 1997
Component: Gas recirculation valve (egr valve).
Bulletin Summary: Policy adjustment - linear exhaust gas recirculation system.
Vehicles covered in this TSB:
1993 Chevrolet Astro, 1994 Chevrolet Astro, 1993 Chevrolet Blazer, 1993 Chevrolet C Series(light), 1994 Chevrolet C Series(light), 1993 GMC C Series(light), 1994 GMC C Series(light), 1993 GMC Jimmy, 1994 GMC Jimmy, 1993 GMC Safari, 1994 GMC Safari, 1993 Oldsmobile Silhouette, 1994 Oldsmobile Silhouette.

5 1994 GMC C Series(light) manual transmission TSB (Bulletin 667202A)

Bulletin Date: Feb. 1, 1997
Component: Manual transmission.
Bulletin Summary: Manual transmission rattle noise at idle (install conventional flywheel).
Vehicles covered in this TSB:
1992 Chevrolet C Series(light), 1993 Chevrolet C Series(light), 1994 Chevrolet C Series(light), 1995 Chevrolet C Series(light), 1996 Chevrolet C Series(light), 1992 Chevrolet K15, 1993 Chevrolet K15, 1994 Chevrolet K15, 1995 Chevrolet K15, 1996 Chevrolet K15, 1992 Chevrolet Tahoe, 1993 Chevrolet Tahoe, 1994 Chevrolet Tahoe, 1995 Chevrolet Tahoe, 1996 Chevrolet Tahoe, 1992 GMC C Series(light), 1993 GMC C Series(light), 1994 GMC C Series(light), 1995 GMC C Series(light), 1996 GMC C Series(light), 1992 GMC Yukon, 1993 GMC Yukon, 1994 GMC Yukon, 1995 GMC Yukon, 1996 GMC Yukon.

6 1994 GMC C Series(light) vehicle speed control TSB (Bulletin GM569002)

Bulletin Date: Apr. 1, 1995
Component: Vehicle speed control.
Bulletin Summary: stepper motor cruise control will not resume or reset (replace smcc module).
Vehicles covered in this TSB:
1994 Chevrolet Astro, 1995 Chevrolet Astro, 1994 Chevrolet Blazer, 1995 Chevrolet Blazer, 1994 Chevrolet C Series(light), 1995 Chevrolet C Series(light), 1994 Chevrolet S10, 1995 Chevrolet S10, 1994 GMC C Series(light), 1995 GMC C Series(light), 1994 GMC Jimmy, 1995 GMC Jimmy, 1994 GMC Safari, 1995 GMC Safari, 1994 GMC Sonoma, 1995 GMC Sonoma.

7 1994 GMC C Series(light) gasoline engine TSB (Bulletin 376105)

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, 1990 Chevrolet P, 1991 Chevrolet P, 1992 Chevrolet P, 1993 Chevrolet P, 1994 Chevrolet P, 1990 Chevrolet S10, 1991 Chevrolet S10, 1992 Chevrolet S10, 1993 Chevrolet S10, 1994 Chevrolet S10, 1990 Chevrolet Suburban, 1991 Chevrolet Suburban, 1992 Chevrolet Suburban, 1993 Chevrolet Suburban, 1994 Chevrolet Suburban, 1990 GMC C Series(light), 1991 GMC C Series(light), 1992 GMC C Series(light), 1993 GMC C Series(light), 1994 GMC C Series(light), 1990 GMC G Series, 1991 GMC G Series, 1993 GMC G Series, 1990 GMC Jimmy, 1991 GMC Jimmy, 1992 GMC Jimmy, 1993 GMC Jimmy, 1994 GMC Jimmy, 1990 GMC P Series, 1991 GMC P Series, 1992 GMC P Series, 1993 GMC P Series, 1994 GMC P Series, 1990 GMC Safari, 1991 GMC Safari, 1992 GMC Safari, 1993 GMC Safari, 1994 GMC Safari, 1990 GMC Suburban, 1991 GMC Suburban, 1992 GMC Suburban, 1993 GMC Suburban, 1994 GMC Suburban, 1991 Oldsmobile Bravada, 1992 Oldsmobile Bravada.

8 1994 GMC C Series(light) clutch assembly TSB (Bulletin 567301)

Bulletin Date: Feb. 1, 1995
Component: Clutch assembly.
Bulletin Summary: clutch pedal squeak noise.
Vehicles covered in this TSB:
1994 Chevrolet Blazer, 1994 Chevrolet C Series(light), 1995 Chevrolet C Series(light), 1994 Chevrolet S10, 1994 GMC C Series(light), 1995 GMC C Series(light), 1994 GMC Sonoma, 1995 GMC Sonoma.
 

9 1994 GMC C Series(light) interior/under dash wiring TSB (Bulletin 468203)

Bulletin Date: Feb. 1, 1995
Component: Interior/under dash wiring.
Bulletin Summary: inoperative or erratic speedometer and/or vehicle shifts down into second gear or will not shift out of second gear.
Vehicles covered in this TSB:
1993 Chevrolet Astro, 1994 Chevrolet Astro, 1993 Chevrolet C Series(light), 1994 Chevrolet C Series(light), 1993 GMC C Series(light), 1994 GMC C Series(light), 1993 GMC Safari, 1994 GMC Safari.

10 1994 GMC C Series(light) side/rear glass TSB (Bulletin 361007B)

Bulletin Date: Feb. 1, 1995
Component: Side/rear glass.
Bulletin Summary: rear liftglas does not release/inoperative.
Vehicles covered in this TSB:
1992 Chevrolet C Series(light), 1993 Chevrolet C Series(light), 1994 Chevrolet C Series(light), 1992 GMC C Series(light), 1993 GMC C Series(light), 1994 GMC C Series(light).

11 1994 GMC C Series(light) side/rear glass TSB (Bulletin 361007A)

Bulletin Date: Jan. 1, 1995
Component: Side/rear glass.
Bulletin Summary: rear liftglass does not release/inoperative.
Vehicles covered in this TSB:
1992 Chevrolet C Series (light), 1993 Chevrolet C Series (light), 1994 Chevrolet C Series (light), 1992 GMC C Series(light), 1993 GMC C Series(light), 1994 GMC C Series(light).

12 1994 GMC C Series(light) windshield wiper/washer TSB (Bulletin 568201)

Bulletin Date: Jan. 1, 1995
Component: Windshield wiper/washer.
Bulletin Summary: wiper blade chatter.
Vehicles covered in this TSB:
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), 1990 Chevrolet Kodiak, 1991 Chevrolet Kodiak, 1992 Chevrolet Kodiak, 1993 Chevrolet Kodiak, 1994 Chevrolet Kodiak, 1988 GMC C Series(light), 1989 GMC C Series(light), 1990 GMC C Series(light), 1991 GMC C Series(light), 1992 GMC C Series(light), 1993 GMC C Series(light), 1994 GMC C Series(light).

13 1994 GMC C Series(light) fuel pump TSB (Bulletin 476304)

Bulletin Date: Jan. 1, 1995
Component: Fuel pump.
Bulletin Summary: black smoke only after injection pump replacement.
Vehicles covered in this TSB:
1994 Chevrolet C Series (light), 1995 Chevrolet C Series (light), 1994 GMC C Series(light), 1995 GMC C Series(light).

14 1994 GMC C Series(light) manifold/header/muffler/tail pipe TSB (Bulletin 376602A)

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, 1983 Chevrolet G Series, 1984 Chevrolet G Series, 1985 Chevrolet G Series, 1986 Chevrolet G Series, 1987 Chevrolet G Series, 1988 Chevrolet G Series, 1989 Chevrolet G Series, 1990 Chevrolet G Series, 1991 Chevrolet G Series, 1992 Chevrolet G Series, 1993 Chevrolet G Series, 1994 Chevrolet G Series, 1995 Chevrolet G Series, 1982 Chevrolet P, 1983 Chevrolet P, 1984 Chevrolet P, 1985 Chevrolet P, 1986 Chevrolet P, 1987 Chevrolet P, 1988 Chevrolet P, 1989 Chevrolet P, 1990 Chevrolet P, 1991 Chevrolet P, 1992 Chevrolet P, 1993 Chevrolet P, 1994 Chevrolet P, 1995 Chevrolet P, 1982 Chevrolet Suburban, 1983 Chevrolet Suburban, 1984 Chevrolet Suburban, 1985 Chevrolet Suburban, 1986 Chevrolet Suburban, 1987 Chevrolet Suburban, 1988 Chevrolet Suburban, 1989 Chevrolet Suburban, 1990 Chevrolet Suburban, 1991 Chevrolet Suburban, 1992 Chevrolet Suburban, 1993 Chevrolet Suburban, 1994 Chevrolet Suburban, 1995 Chevrolet Suburban, 1982 GMC C Series(light), 1983 GMC C Series(light), 1984 GMC C Series(light), 1985 GMC C Series(light), 1986 GMC C Series(light), 1987 GMC C Series(light), 1988 GMC C Series(light), 1989 GMC C Series(light), 1990 GMC C Series(light), 1991 GMC C Series(light), 1992 GMC C Series(light), 1993 GMC C Series(light), 1994 GMC C Series(light), 1995 GMC C Series(light), 1982 GMC G Series, 1983 GMC G Series, 1984 GMC G Series, 1985 GMC G Series, 1986 GMC G Series, 1987 GMC G Series, 1988 GMC G Series, 1989 GMC G Series, 1990 GMC G Series, 1991 GMC G Series, 1992 GMC G Series, 1993 GMC G Series, 1994 GMC G Series, 1995 GMC G Series, 1982 GMC P Series, 1983 GMC P Series, 1984 GMC P Series, 1985 GMC P Series, 1986 GMC P Series, 1987 GMC P Series, 1988 GMC P Series, 1989 GMC P Series, 1990 GMC P Series, 1991 GMC P Series, 1992 GMC P Series, 1993 GMC P Series, 1994 GMC P Series, 1995 GMC P Series, 1982 GMC Suburban, 1983 GMC Suburban, 1984 GMC Suburban, 1985 GMC Suburban, 1986 GMC Suburban, 1987 GMC Suburban, 1988 GMC Suburban, 1989 GMC Suburban, 1990 GMC Suburban, 1991 GMC Suburban, 1992 GMC Suburban, 1993 GMC Suburban, 1995 GMC Suburban.

15 1994 GMC C Series(light) unknown or other TSB (Bulletin 476149)

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, 1994 Chevrolet G Series, 1991 Chevrolet P, 1992 Chevrolet P, 1993 Chevrolet P, 1994 Chevrolet P, 1991 Chevrolet S10, 1992 Chevrolet S10, 1993 Chevrolet S10, 1994 Chevrolet S10, 1991 GMC C Series(light), 1992 GMC C Series(light), 1993 GMC C Series(light), 1994 GMC C Series(light), 1991 GMC G Series, 1992 GMC G Series, 1993 GMC G Series, 1994 GMC G Series, 1991 GMC Jimmy, 1992 GMC Jimmy, 1993 GMC Jimmy, 1994 GMC Jimmy, 1991 GMC P Series, 1992 GMC P Series, 1993 GMC P Series, 1994 GMC P Series, 1991 GMC Safari, 1992 GMC Safari, 1993 GMC Safari, 1994 GMC Safari, 1991 Oldsmobile Bravada, 1992 Oldsmobile Bravada.

16 1994 GMC C Series(light) equipment labels TSB (Bulletin CAMP/94C28A)

Bulletin Date: Dec. 1, 1994
Component: Equipment labels.
Bulletin Summary: revision to product emission campaign 94-c-28 - emission label error.
Vehicles covered in this TSB:
1994 Chevrolet C Series(light), 1994 Chevrolet G Series, 1994 Chevrolet P, 1994 GMC C Series(light), 1994 GMC G Series, 1994 GMC P Series.

17 1994 GMC C Series(light) ignition module TSB (Bulletin CAMP/94C57A)

Bulletin Date: Dec. 1, 1994
Component: Ignition module.
Bulletin Summary: general motors has determined that certain 1994 GMC c/k trucks and g vans may experience poor throttle response, stalling, misfire, poor cold or hot starting, extended cranking of the starter with a hot engine, and/or your vehicle will sta
Vehicles covered in this TSB:
1994 GMC C Series(light), 1994 GMC G Series.


Also see GMC vehicle common problems.




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