The service and repair manual for the 1985 GMC S15 — 2.8L V6 and 1.9L I4 and 2.5L I4 and 2.2L I4 engines, 7 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 | 1985 |
|---|---|
| Engines | 2.8L V6 — OHV 1.9L I4 — SOHC 2.5L I4 — 151 cu in, OHV 2.2L I4 — OHV |
| Trims | Base Extended Cab Pickup 2-Door · Base Standard Cab Pickup 2-Door · Sierra Classic Extended Cab Pickup 2-Door · High Sierra Standard Cab Pickup 2-Door · Base Cab & Chassis 2-Door · High Sierra Extended Cab Pickup 2-Door +1 |
| Other 1985 S15 variants | S15 Jimmy → |
| Federal record | 1 recall · 1 complaints · 0 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 1985 S15 manual
03 / ContentsSections in the manual
- Quick Lookups 60
- Engine Performance 888
- Accessories & Equipment 137
- General Information 1,523
- Body & Frame 30
- Heating, Ventilation & A/C (HVAC) 167
- Brakes 67
- Maintenance 58
- Drivelines & Axles 83
- Steering 137
- Electrical 148
- Suspension 73
- Engine Mechanical 351
- Transmission 303
- Steering Wheel Retaining Nut 30
04 / Known issuesRecalls on federal record for the 1985 S15
- Exterior Lighting · 06E049000Without the amber reflectors, the vehicle will be poorly illuminated, possibly resulting in a vehicl.
Owners have filed 1 complaints and GMC has issued 0 technical service bulletins for the 1985 S15. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 1985 S15 manual
Is this manual specific to the 1985 S15?
Yes. It is the OEM manual matched to the 1985 model year, covering the 2.8L V6 and 1.9L I4 and 2.5L I4 and 2.2L I4 across the Base Extended Cab Pickup 2-Door, Base Standard Cab Pickup 2-Door, Sierra Classic Extended Cab Pickup 2-Door, High Sierra Standard Cab Pickup 2-Door, Base Cab & Chassis 2-Door, High Sierra Extended Cab Pickup 2-Door, Sierra Classic Standard Cab Pickup 2-Door trims. Specifications and procedure sequences are the ones GMC published for this year.
What 1985 S15 problems does it help with?
1 recall is on federal record for the 1985 S15, covering exterior lighting. 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 1985 S15 wiring diagrams?
Yes — the complete wiring diagrams for the 1985 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 S15 years and 1985 GMC models
1990 S15 · 1989 S15 · 1988 S15 · 1987 S15 · 1986 S15 · 1984 S15 · 1983 S15 · 1982 S15 · all 9 years
1985 GMC Astro · 1985 GMC B6000 · 1985 GMC Brigadier · 1985 GMC C1500 · 1985 GMC C1500 Suburban · 1985 GMC C2500 · 1985 GMC C2500 Suburban · 1985 GMC C3500 · 1985 GMC C5000 · 1985 GMC C6000 · 1985 GMC C7000 · 1985 GMC Caballero · every 1985 model