This factory service and repair manual for the 1988 GMC C5000 has an unusually simple brief: one engine, one body style, one trim. The engine is the naturally aspirated 5.7L V8 of 350 cubic inches; the body style is the 2-door conventional cab and chassis; the trim code is C5D042. With no variants to separate, every specification, torque value, wiring diagram and diagnostic procedure in the book points at the same hardware, which makes looking up a figure quick and leaves no doubt about which column applies.
Engines covered
- 5.7L V8 (350 cu in) — naturally aspirated, gasoline
Body styles covered
- 2-door cab & chassis, conventional
Trims covered
- C5D042
Known issues on the 1988 C5000. The federal record for the 1988 C5000 is clean, with no recalls and no owner complaints logged with NHTSA. What remains is ordinary upkeep on the 350 V8 and the chassis underneath it, and that is the ground the manual covers: engine specifications, service and adjustment procedures, torque values for the fasteners that hold the driveline together, wiring diagrams for the cab and chassis circuits, and step-by-step diagnostics for working out where a fault begins.
