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.
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 HOUSING MANUFACTURE
THIS CONDITION MAY CAUSE AN INADEQUATE SEAL AT THE CONNECTION, POTENTIALLY LEADING TO A FUEL LEAK. I
HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGAN ON OCTOB
