This factory service and repair manual for the 1988 GMC P3500 applies to a truck offered as a two-door delivery van or as a chassis, both in Base Stripped and Value form. Four engines are covered: the 7.4L V8 and 5.7L V8 gasoline units, the 4.8L inline-six, and the 6.2L V8 diesel, each of them overhead-valve and naturally aspirated. Because the engines differ widely in size but share an architecture, the manual keeps one set of system-by-system procedures and lists the specifications, torque values, wiring diagrams and diagnostics for each.
Engines covered
- 7.4L V8 (454 cu in) — OHV, naturally aspirated, gasoline
- 6.2L V8 (379 cu in) — OHV, naturally aspirated, diesel
- 4.8L inline-six (292 cu in) — OHV, naturally aspirated, gasoline
- 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline
Body styles covered
- 2-door van delivery van
- Chassis
Trims covered
- Base Stripped
- Value
Known issues on the 1988 P3500. The federal record for the 1988 P3500 is clean, without recall campaigns and without owner complaints. Read that as an absence of documented trouble rather than a promise, and use the manual for what it is: the service procedures for four engines, the specifications and torque values behind them, and the wiring diagrams and diagnostic sequences that make an electrical fault on the van or the chassis something you can trace end to end.
CERTAIN HONEYWELL FRAM RACING BRAND HP4 AND HP8 OIL FILTERS THAT WERE MANUFACTURED FROM MAY 25, 2006, THROUGH SEPTEMBER 14, 2007, AND SOLD FOR USE AS REPLACEMENT EQUIPMENT FOR VEHICLES LIST ABOVE. TH
THIS CONDITION MAY CAUSE INADEQUATE SEALING AND LOSS OF ENGINE OIL, POSSIBLY RESULTING IN A FIRE.
HONEYWELL WILL REPLACE THE AFFECTED OIL FILTERS FREE OF CHARGE. THE RECALL BEGAN DURING NOVEMBER 20
