1994 GMC C1500 Service and Repair Manual
This factory service and repair manual for the 1994 GMC C1500 covers a long engine list: five in all, including two versions of the 6.5L diesel V8, one turbocharged and one naturally aspirated, alongside the 4.3L V6 and the 5.0L and 5.7L gasoline V8s. Bodies are the two-door standard cab and the two-door extended cab pickup, and the trims run Sierra SL, Sierra SLE, Sierra SLT and Sierra Special. Turbocharged and naturally aspirated diesels differ in boost, fueling and cooling data, and are treated as separate engines throughout.
Engines covered
- 5.0L V8 (305 cu in) — OHV, naturally aspirated, gasoline
- 6.5L V8 (395 cu in) — OHV, turbocharged, diesel
- 4.3L V6 (262 cu in) — OHV, naturally aspirated, gasoline
- 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline
- 6.5L V8 (395 cu in) — OHV, naturally aspirated, diesel
Body styles covered
- 2-door standard cab pickup
- 2-door extended cab pickup
Trims covered
- Sierra SL
- Sierra SLE
- Sierra SLT
- Sierra Special
Known issues on the 1994 C1500. Twenty-five owner complaints are logged with NHTSA for this model year, and the pattern is clear enough to guide a service plan: seven concern the seats, six visibility and four the power train. Those point to seat frame and track service, to wiper, washer and glass work, and to the transmission, driveshaft and axle sections. Each of those systems is covered here with removal and installation procedures, adjustment specifications, torque values and the diagnostic steps needed to confirm a fault before parts are changed.
Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
SOME CUSTOMERS MAY COMMENT ON FRONT DOOR HINGE PIN BUSHING WEAR, FRONT DOOR SAG, OR DOOR CHUCKING MOVEMENT IN EXTREME OPERATING CONDITIONS. *TT
ENGINE HARD TO START (REPLACE FUEL PUMP PULSATOR). *TW
SEAT BELT BOLT BROKE DURING COLLISION, CAUSING INJURY PRIOR TO RECALL. (ATTORNEY FOR CLIENT)
WHILE DRIVING DURING RAINY WEATHER WINDSHIELD WIPERS FAILED, RECALL 03V159000 WAS ISSUED ON THIS PROBLEM. HOWEVER, DEALERSHIP WOULD NOT PERFORM RECALL REPAIRS BECAUSE THE VIN WAS NOT INCLUDED. *AK
SEAT KEEPS BREAKING CONSUMER HAS HAD THIS SEAT REPAIRED 4 TIMES, THE SAME ONE.*AK
PISTON ON RIGHT FRONT CALIPER IS HANGING INSIDE, CAUSING VEHICLE TO PULL TO LEFT WHEN BRAKES ARE APPLIED. *AK
I HAVE HAD APPROXIMATELY 7 COMPLAINTS AND FAILURRES WITH DRIVERS SEAT. BOLTS, CABLES,LOOSE BOLTS AND PORTIONS OF SEAT REPLACED. THERE WAS A RECALL FROM GM THAT WAS INSTALLED IN MY TRUCK ON 6-17-96. "R
Showing the 5 most serious of 28 complaints filed with NHTSA.
