1984 Pontiac Grand Prix Service and Repair Manual

This factory service and repair manual for the 1984 Pontiac Grand Prix covers a car offered in one body, the two-door coupe, and three trims: Base, Brougham and LE. Under the hood sit three overhead-valve engines without forced induction, a 3.8L V6, a gasoline 5.0L V8 and a diesel 5.7L V8. Specifications and torque values run through the engine, fuel and cooling systems, and procedures and wiring diagrams extend to the transmission, brakes, suspension, steering and body electrical system.

Engines covered

• 3.8L V6 (231 cu in) — OHV, naturally aspirated, gasoline
• 5.0L V8 (305 cu in) — OHV, naturally aspirated, gasoline
• 5.7L V8 (350 cu in) — OHV, naturally aspirated, diesel

Body styles covered

• 2-door coupe

Trims covered

• Base
• Brougham
• LE

Known issues on the 1984 Grand Prix. The 1984 Grand Prix has 2 recalls on the federal record. On certain 1984 Grand Prix vehicles with cruise control and particular engines, a small nylon bushing could slip from the cruise servo, letting engine speed surge or the engine keep running after the key was off; the servo rod could also snag and hold the throttle open. A new bushing was the fix. The second covered certain 1984 Grand Prix coupes with specific bucket seats, whose seat back latches might not hold in a crash. Of 3 owner complaints, 2 concern the hydraulic service brakes and 1 the engine and cooling, and 1 complaint reported a fire. Throttle, brake and engine procedures, torque values and diagnostics apply.