The service and repair manual for the 1990 Buick Regal — 3.1L V6 and 3.8L V6 engines, 5 trims. Matched to this exact model year, so the specifications and sequences are the ones Buick published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 1990 |
|---|---|
| Engines | 3.1L V6 — OHV 3.8L V6 — 232 cu in, OHV |
| Trims | Custom Coupe 2-Door · Limited Coupe 2-Door · Custom Sedan 4-Door · Limited Sedan 4-Door · Gran Sport Coupe 2-Door |
| Federal record | 1 recall · 107 complaints · 6 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 1990 Regal manual
03 / ContentsSections in the manual
- Quick Lookups 70
- Engine Performance 1,176
- Accessories & Equipment 211
- General Information 1,523
- Body & Frame 79
- Heating, Ventilation & A/C (HVAC) 174
- Brakes 249
- Maintenance 86
- Drivelines & Axles 19
- Steering 66
- Electrical 191
- Suspension 67
- Engine Mechanical 234
- Transmission 290
04 / Known issuesRecalls on federal record for the 1990 Regal
- Wheels · 95V115000If wheel separation occurs while the vehicle is in motion, loss of steering and brake control of the.
Owners have filed 107 complaints and Buick has issued 6 technical service bulletins for the 1990 Regal. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 1990 Regal manual
Is this manual specific to the 1990 Regal?
Yes. It is the OEM manual matched to the 1990 model year, covering the 3.1L V6 and 3.8L V6 across the Custom Coupe 2-Door, Limited Coupe 2-Door, Custom Sedan 4-Door, Limited Sedan 4-Door, Gran Sport Coupe 2-Door trims. Specifications and procedure sequences are the ones Buick published for this year.
What 1990 Regal problems does it help with?
1 recall is on federal record for the 1990 Regal, covering wheels. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Buick dealers.
Does it include 1990 Regal wiring diagrams?
Yes — the complete wiring diagrams for the 1990 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 Regal years and 1990 Buick models
1996 Regal · 1995 Regal · 1994 Regal · 1993 Regal · 1992 Regal · 1991 Regal · 1989 Regal · 1988 Regal · 1987 Regal · 1986 Regal · 1985 Regal · 1984 Regal · all 30 years
1990 Buick Century · 1990 Buick Electra · 1990 Buick LeSabre · 1990 Buick Reatta · 1990 Buick Riviera · 1990 Buick Skylark · every 1990 model