The service and repair manual for the 1988 GMC C3500 — 7.4L V8 and 6.2L V8 and 5.7L V8 engines, 9 trims. Matched to this exact model year, so the specifications and sequences are the ones GMC published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 1988 |
|---|---|
| Engines | 7.4L V8 — OHV 6.2L V8 — OHV 5.7L V8 — OHV |
| Trims | Sierra SLE Standard Cab Pickup 2-Door · Sierra Extended Cab Pickup 2-Door · Sierra SLE Extended Cab Pickup 2-Door · Sierra SLX Extended Cab Pickup 2-Door · Sierra SLX Standard Cab Pickup 2-Door · Sierra SLX Cab & Chassis 2-Door +3 |
| Federal record | 1 recall · 1 complaints · 0 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 1988 C3500 manual
03 / ContentsSections in the manual
- Quick Lookups 66
- Engine Performance 898
- Accessories & Equipment 109
- General Information 1,523
- Body & Frame 28
- Heating, Ventilation & A/C (HVAC) 135
- Brakes 132
- Maintenance 66
- Drivelines & Axles 97
- Steering 122
- Electrical 122
- Suspension 59
- Engine Mechanical 323
- Transmission 348
- Steering Wheel Retaining Nut 30
04 / Known issuesRecalls on federal record for the 1988 C3500
- Power Train — automatic transmission · 93V016000The vented transmission fluid can catch fire if exposedto a source of ignition.
Owners have filed 1 complaints and GMC has issued 0 technical service bulletins for the 1988 C3500. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 1988 C3500 manual
Is this manual specific to the 1988 C3500?
Yes. It is the OEM manual matched to the 1988 model year, covering the 7.4L V8 and 6.2L V8 and 5.7L V8 across the Sierra SLE Standard Cab Pickup 2-Door, Sierra Extended Cab Pickup 2-Door, Sierra SLE Extended Cab Pickup 2-Door, Sierra SLX Extended Cab Pickup 2-Door, Sierra SLX Standard Cab Pickup 2-Door, Sierra SLX Cab & Chassis 2-Door, Sierra Cab & Chassis 2-Door, Sierra SLE Cab & Chassis 2-Door, Sierra Standard Cab Pickup 2-Door trims. Specifications and procedure sequences are the ones GMC published for this year.
What 1988 C3500 problems does it help with?
1 recall is on federal record for the 1988 C3500, covering power train. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by GMC dealers.
Does it include 1988 C3500 wiring diagrams?
Yes — the complete wiring diagrams for the 1988 build, alongside repair procedures, specifications and diagnostics.
Is it a subscription?
No. $29.99 once and the manual is yours. It is a digital manual — nothing ships; access details arrive by email after checkout and it works on any device.
RelatedOther C3500 years and 1988 GMC models
1994 C3500 · 1993 C3500 · 1992 C3500 · 1991 C3500 · 1990 C3500 · 1989 C3500 · 1986 C3500 · 1985 C3500 · 1984 C3500 · 1983 C3500 · 1982 C3500 · all 18 years
1988 GMC Astro · 1988 GMC B6000 · 1988 GMC Brigadier · 1988 GMC C1500 · 1988 GMC C1500 Suburban · 1988 GMC C2500 · 1988 GMC C2500 Suburban · 1988 GMC C5000 · 1988 GMC C6000 · 1988 GMC C7000 · 1988 GMC G1500 · 1988 GMC G2500 · every 1988 model