1988 GMC V1500 Suburban Service and Repair Manual
This factory service and repair manual for the 1988 GMC V1500 Suburban documents the four-door sport utility in Base and Sierra Classic trim, powered by either the 6.2L naturally aspirated V8 diesel or the 5.7L gasoline V8, both overhead-valve designs. Coverage is arranged so a technician can work either engine without sorting through the other: separate mechanical, fuel and cooling procedures with their own published specifications and torque values, then shared sections for the transfer case, axles, brakes, steering, suspension and body wiring.
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 V1500 Suburban. NHTSA holds five owner complaints against this model year, and four of the five concern the suspension, with the remaining one on the service brakes. On a heavy four-wheel-drive wagon that combination is unsurprising — springs, shocks, control arm bushings and brake hydraulics all carry more load here than on a lighter vehicle. The manual covers those directly, with suspension and brake service procedures, published specifications, torque values for the fasteners involved, and the diagnostic steps that go with them.
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
