1991 Chevrolet C2500 Service and Repair Manual
This factory service and repair manual for the 1991 Chevrolet C2500 has five engines to keep straight, one more than the year before: a 4.3L V6, the 5.0L, 5.7L and 7.4L gasoline V8s, and the 6.2L diesel. Three bodies carry them, standard cab, extended cab and cab and chassis, in Base, Cheyenne, Scottsdale and Silverado trim. With the 454 joining the list, cooling, exhaust and driveline specifications are worth reading by engine rather than from memory.
Engines covered
- 5.0L V8 (305 cu in) — OHV, naturally aspirated, gasoline
- 7.4L V8 (454 cu in) — OHV, naturally aspirated, gasoline
- 6.2L V8 (379 cu in) — OHV, naturally aspirated, diesel
- 4.3L V6 (262 cu in) — OHV, naturally aspirated, gasoline
- 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline
Body styles covered
- 2-door standard cab pickup
- 2-door cab & chassis
- 2-door extended cab pickup
Trims covered
- Base
- Cheyenne
- Scottsdale
- Silverado
Known issues on the 1991 C2500. Two recalls appear on the federal record, both concerning replacement filters that can fail to seal. One lets fuel escape at its connection where a spark could reach it; the other lets engine oil out under pressure. Either can start a fire. A single owner complaint was recorded for the year, on the fuel and propulsion system. Fuel delivery diagnosis, line and fitting torque values, and engine lubrication procedures are set out in this manual for each of the five engines it covers.
CERTAIN HONEYWELL FRAM RACING BRAND HP4 AND HP8 OIL FILTERS THAT WERE MANUFACTURED FROM MAY 25, 2006, THROUGH SEPTEMBER 14, 2007, AND SOLD FOR USE AS REPLACEMENT EQUIPMENT FOR VEHI
THIS CONDITION MAY CAUSE INADEQUATE SEALING AND LOSS OF ENGINE OIL, POSSIBLY RESULTING IN
HONEYWELL WILL REPLACE THE AFFECTED OIL FILTERS FREE OF CHARGE. THE RECALL BEGAN DURING N
CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER
THIS CONDITION MAY CAUSE AN INADEQUATE SEAL AT THE CONNECTION, POTENTIALLY LEADING TO A FU
HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGA
Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
TL* THE CONTACT OWNS A 1991 CHEVROLET C2500. THE CONTACT NOTICED THAT THE FUEL TANK EXHIBITED A SMALL HOLE BECAUSE OF THE WORN FUEL TANK PLASTIC COVER. THE CONTACT WAS A CERTIFIED
