The service and repair manual for the 1990 Cadillac DeVille — the 4.5L V8 engine, 2 trims. Matched to this exact model year, so the specifications and sequences are the ones Cadillac published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 1990 |
|---|---|
| Engines | 4.5L V8 — OHV |
| Trims | Base Sedan 4-Door · Base Coupe 2-Door |
| Federal record | 2 recalls · 111 complaints · 1 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 1990 DeVille manual
03 / ContentsSections in the manual
- Quick Lookups 70
- General Information 1,550
- Accessories & Equipment 237
- Heating, Ventilation & A/C (HVAC) 227
- Body & Frame 151
- Maintenance 46
- Brakes 212
- Restraints 206
- Drivelines & Axles 19
- Steering 70
- Electrical 152
- Suspension 182
- Engine Mechanical 220
- Transmission 160
- Engine Performance 1,442
04 / Known issuesRecalls on federal record for the 1990 DeVille
- Air Bags — frontal · 90E043004Inflator component separation allows hot combustion gasesto escape into the passenger compartment wh.
- Fuel System, Gasoline · 06E043000This condition may cause an inadequate seal at the connection, potentially leading to a fuel leak. i.
Owners have filed 111 complaints and Cadillac has issued 1 technical service bulletins for the 1990 DeVille. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 1990 DeVille manual
Is this manual specific to the 1990 DeVille?
Yes. It is the OEM manual matched to the 1990 model year, covering the 4.5L V8 across the Base Sedan 4-Door, Base Coupe 2-Door trims. Specifications and procedure sequences are the ones Cadillac published for this year.
What 1990 DeVille problems does it help with?
2 recalls are on federal record for the 1990 DeVille, covering air bags, fuel system, gasoline. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Cadillac dealers.
Does it include 1990 DeVille 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 DeVille years and 1990 Cadillac models
1996 DeVille · 1995 DeVille · 1994 DeVille · 1993 DeVille · 1992 DeVille · 1991 DeVille · 1989 DeVille · 1988 DeVille · 1987 DeVille · 1986 DeVille · 1985 DeVille · 1984 DeVille · all 24 years
1990 Cadillac Allante · 1990 Cadillac Brougham · 1990 Cadillac Commercial Chassis · 1990 Cadillac Eldorado · 1990 Cadillac Fleetwood · 1990 Cadillac Seville · every 1990 model