The service and repair manual for the 1990 Buick Century — 3.3L V6 and 2.5L I4 and 3.1L V6 engines, 6 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 | 3.3L V6 — OHV 2.5L I4 — 151 cu in, OHV 3.1L V6 — OHV |
| Trims | Limited Wagon 4-Door · Base Sedan 4-Door · Custom Wagon 4-Door · Custom Coupe 2-Door · Custom Sedan 4-Door · Limited Sedan 4-Door |
| Federal record | 1 recall · 49 complaints · 0 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 1990 Century manual
03 / ContentsSections in the manual
- Quick Lookups 70
- Engine Performance 1,178
- Accessories & Equipment 195
- General Information 1,528
- Body & Frame 82
- Heating, Ventilation & A/C (HVAC) 202
- Brakes 65
- Maintenance 53
- Drivelines & Axles 19
- Steering 70
- Electrical 152
- Suspension 57
- Engine Mechanical 290
- Transmission 400
04 / Known issuesRecalls on federal record for the 1990 Century
- Seat Belts — front › anchorage · 95V173000Consequence of non-compliance: in a collison, stress can cause the attachment metal to tear and all.
Owners have filed 49 complaints and Buick has issued 0 technical service bulletins for the 1990 Century. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 1990 Century manual
Is this manual specific to the 1990 Century?
Yes. It is the OEM manual matched to the 1990 model year, covering the 3.3L V6 and 2.5L I4 and 3.1L V6 across the Limited Wagon 4-Door, Base Sedan 4-Door, Custom Wagon 4-Door, Custom Coupe 2-Door, Custom Sedan 4-Door, Limited Sedan 4-Door trims. Specifications and procedure sequences are the ones Buick published for this year.
What 1990 Century problems does it help with?
1 recall is on federal record for the 1990 Century, covering seat belts. 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 Century 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 Century years and 1990 Buick models
1996 Century · 1995 Century · 1994 Century · 1993 Century · 1992 Century · 1991 Century · 1989 Century · 1988 Century · 1987 Century · 1986 Century · 1985 Century · 1984 Century · all 24 years
1990 Buick Electra · 1990 Buick LeSabre · 1990 Buick Reatta · 1990 Buick Regal · 1990 Buick Riviera · 1990 Buick Skylark · every 1990 model