1997 GMC C2500 Service and Repair Manual
This factory service and repair manual for the 1997 GMC C2500 covers a truck offered in standard cab, extended cab and cab and chassis form, in Sierra SL, Sierra SLE and Sierra SLT trim. Four engines are documented: the 5.0L V8, the 7.4L V8, the turbocharged 6.5L diesel V8 and the 5.7L V8 built to run on compressed natural gas or gasoline. Three fuel arrangements across four engines make the fuel and emissions chapters the most varied part of the book, and each engine is specified separately.
Engines covered
- 5.0L V8 (305 cu in) — OHV, naturally aspirated, gasoline
- 6.5L V8 (395 cu in) — OHV, turbocharged, diesel
- 5.7L V8 (350 cu in) — OHV, naturally aspirated, CNG or gasoline
- 7.4L V8 (454 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
- Sierra SL
- Sierra SLE
- Sierra SLT
Known issues on the 1997 C2500. Two owner complaints are logged with NHTSA against this model year, one on the engine and one on the fuel system. With so little recorded, the manual is most useful as a working reference: compression, valve and timing specifications for each of the four engines, pressure and delivery tests for the gasoline, natural gas and diesel arrangements, torque values throughout, and diagnostic sequences that confirm what has actually failed before anything is replaced.
