1990 Buick Riviera service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Electrical coverage with wiring diagrams
- Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more
Trims covered
- Luxury Coupe 2-Door
Engines covered
- 3.8L 3800CC 231Cu. In. V6 GAS OHV Naturally Aspirated
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
THE FRONT OUTER SHOULDER BELT WEB SEW STOP CAN BECOME STUCK IN THE RETRACTOR. THE BELT CAN BE DIFFICULT TO PULL OUT OF THE RETRACTOR AND SOME OCCUPANTS MAY NOT BE ABLE TO FASTEN THE BELT.
THIS CONDITION CAN PREVENT A PERSON FROM USING THEIR RESTRAINT SYSTEM RESULTING IN AN INCREASED RISK
DEALER WILL INSTALL A WEBBING STOP BUTTON IF THE CUSTOMER REQUESTS REPAIR.
OWNER STATES THAT VEHICLE WAS INVOLVED IN AN ACCIDENT WHILE TRAVELING AT 30 MPH AND THERE WAS NO DEPLOYMENT OF THE DRIVER'S SIDE AIRBAG. OWNER QUESTIONS THE SAFETY OF THE AIRBAGS. *AK
VEHICLE HESITATE D BEFORE ACCELERATING. DEALERSHIP WILL BE NOTIFIED. *AK
ABS BRAKING PROBLEM, WHEN APPLYING BRAKES THERE IS NOISE AND LESS BRAKING POWER. *AK
WHILE DRIVING AND UPON ATTEMTPING TO STOP, BRAKE PEDAL GOT VERY HARD, CAUSING COMPLETE BRAKE FAILURE. THIS CAUSED CONSUMER TO SKID OUT INTO TRAFFIC. IT HAS BEEN AN ONGOING PROBLEM. CONSUMER HAS C
ANTI-LOCK BRAKES CONTINUALLY FAILING, SEVERAL REPLACEMENTS HOWEVER CONTINUES TO FAIL, ALMOST RESULTING IN VEHICLE ACCIDENTS DUE TO LOSS OF CONTROL. MJS
Showing the 5 most serious of 16 complaints filed with NHTSA.
