The service and repair manual for the 1988 Chevrolet R20 — 5.0L V8 and 7.4L V8 and 6.2L V8 and 4.8L I6 and 4.3L V6 and 5.7L V8 engines, 6 trims. Matched to this exact model year, so the specifications and sequences are the ones Chevrolet published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 1988 |
|---|---|
| Engines | 5.0L V8 — OHV 7.4L V8 — OHV 6.2L V8 — OHV 4.8L I6 — OHV 4.3L V6 — OHV 5.7L V8 — OHV |
| Trims | Custom Deluxe Cab & Chassis 2-Door · Cheyenne Crew Cab Pickup 4-Door · Silverado Crew Cab Pickup 4-Door · Custom Deluxe Crew Cab Pickup 4-Door · Custom Deluxe Standard Cab Pickup 2-Door · Scottsdale Crew Cab Pickup 4-Door |
| Other 1988 R20 variants | R20 Suburban → |
| Federal record | 1 recall · 0 complaints · 0 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 1988 R20 manual
03 / ContentsSections in the manual
- Quick Lookups 67
- Engine Performance 927
- Accessories & Equipment 115
- General Information 1,523
- Body & Frame 28
- Heating, Ventilation & A/C (HVAC) 132
- Brakes 132
- Maintenance 52
- Drivelines & Axles 97
- Steering 122
- Electrical 144
- Suspension 54
- Engine Mechanical 265
- Transmission 381
- Steering Wheel Retaining Nut 30
04 / Known issuesRecalls on federal record for the 1988 R20
- Equipment · 07E088000This condition may cause inadequate sealing and loss of engine oil, possibly resulting in.
Owners have filed 0 complaints and Chevrolet has issued 0 technical service bulletins for the 1988 R20. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 1988 R20 manual
Is this manual specific to the 1988 R20?
Yes. It is the OEM manual matched to the 1988 model year, covering the 5.0L V8 and 7.4L V8 and 6.2L V8 and 4.8L I6 and 4.3L V6 and 5.7L V8 across the Custom Deluxe Cab & Chassis 2-Door, Cheyenne Crew Cab Pickup 4-Door, Silverado Crew Cab Pickup 4-Door, Custom Deluxe Crew Cab Pickup 4-Door, Custom Deluxe Standard Cab Pickup 2-Door, Scottsdale Crew Cab Pickup 4-Door trims. Specifications and procedure sequences are the ones Chevrolet published for this year.
What 1988 R20 problems does it help with?
1 recall is on federal record for the 1988 R20, covering equipment. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Chevrolet dealers.
Does it include 1988 R20 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 R20 years and 1988 Chevrolet models
1988 Chevrolet Astro · 1988 Chevrolet B60 · 1988 Chevrolet Beretta · 1988 Chevrolet Blazer · 1988 Chevrolet C15 · 1988 Chevrolet C1500 · 1988 Chevrolet C2500 · 1988 Chevrolet C35 · 1988 Chevrolet C3500 · 1988 Chevrolet C50 · 1988 Chevrolet C60 · 1988 Chevrolet C70 · every 1988 model