1988 GMC V2500 Suburban Service and Repair Manual

This factory service and repair manual for the 1988 GMC V2500 Suburban covers the three-quarter-ton four-door sport utility in Base and Sierra Classic trim, with a choice between the 6.2L overhead-valve V8 diesel and the 5.7L overhead-valve gasoline V8. The two engines are documented independently where their hardware differs — fuel delivery, cooling, charging and starting above all — and the shared chassis material, from transfer case and axles through brakes, steering and body, is set out once with its own specifications and torque values.

Engines covered

• 6.2L V8 (379 cu in) — OHV, naturally aspirated, diesel
• 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

• 4-door sport utility

Trims covered

• Base
• Sierra Classic

Known issues on the 1988 V2500 Suburban. Two owner complaints are logged with NHTSA for this model year, one on the fuel system and one grouped under engine and engine cooling. Both fall squarely inside the manual's engine sections, which cover fuel delivery and injection for the 6.2L diesel and the 5.7L gasoline V8, the cooling system and its thermostat, pump and fan components, and the published specifications, torque values and diagnostic procedures needed to work through a fault in either.