Petrol | ||||
| 3.8 Buick LD5 V6 | 105 hp / 77kW | Rear Wheel Drive | 1977-1978 | |
| 3.8 Buick LD5 V6 | 110 hp / 81kW | Rear Wheel Drive | 1980-1987 | |
| 3.8 Buick LD5 V6 | 115 hp / 85kW | Rear Wheel Drive | 1978-1980 | |
| 4.3 Pontiac LS 5 Small-Block V8 | 120 hp / 88kW | Rear Wheel Drive | 1979-1981 | |
| 4.1 Buick LC4 V6 | 125 hp / 92kW | Rear Wheel Drive | 1981-1982 | |
| 4.9 Pontiac 301 Small-Block V8 | 135 hp / 99kW | Rear Wheel Drive | 1978-1979 | |
| 5.0 Chevrolet LG3 Small-Block V8 | 135 hp / 99kW | Rear Wheel Drive | 1977-1978 | |
| 4.3 GM LB4 V6 | 140 hp / 103kW | Rear Wheel Drive | 1986-1987 | |
| 4.9 Pontiac 301 Small-Block V8 | 140 hp / 103kW | Rear Wheel Drive | 1977-1978 | |
| 4.9 Pontiac 301 Small-Block V8 | 150 hp / 110kW | Rear Wheel Drive | 1979-1980 | |
| 4.9 Pontiac 301 Small-Block V8 4-bbl. | 150 hp / 110kW | Rear Wheel Drive | 1977-1979 | |
| 5.0 Chevrolet LG4 Small-Block V8 | 150 hp / 110kW | Rear Wheel Drive | 1979-1987 | |
| 5.0 Chevrolet LG4 Small-Block V8 | 155 hp / 114kW | Rear Wheel Drive | 1978-1979 | |
| 5.0 Chevrolet LG4 Small-Block V8 | 165 hp / 121kW | Rear Wheel Drive | 1985-1986 | |
| 4.9 Pontiac 301 Small-Block V8 H.O. | 170 hp / 125kW | Rear Wheel Drive | 1979-1980 | |
Diesel | ||||
| 5.7 Oldsmobile LF9 V8 | 105 hp / 77kW | Rear Wheel Drive | 1980-1984 | |