1993 Buick Riviera Service and Repair Manual

This factory service and repair manual for the 1993 Buick Riviera belongs to a coupe with two doors, sold in Luxury trim with a 3.8L V6. That V6 is an overhead-valve engine running on gasoline, naturally aspirated. The manual gives procedures for the engine, cooling, fuel and ignition systems; specifications and torque values for the transaxle, brakes, suspension and steering; and wiring diagrams with diagnostics for the electrical system, including interior lighting.

Engines covered

• 3.8L V6 (231 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

• 2-door coupe

Trims covered

• Luxury

Known issues on the 1993 Riviera. Five owner complaints are recorded against the 1993 Riviera. The air bags and the hydraulic brakes account for 2 apiece, with the electrical system, interior lighting and steering at 1 apiece. Among them, 2 complaints reported a crash, 2 reported an injury and 1 reported a death. A single recall applies: certain 1993 Riviera vehicles could have a front outboard shoulder belt whose stitched stop lodged in the retractor, leaving the belt stiff to pull and, for some occupants, impossible to buckle. Dealers added a webbing stop button when owners asked. Brake, steering and electrical diagnostics in the manual apply.