| Vehicle |
Sub Model |
Engine |
| • 1977 GMC K25 |
Base |
5.0L V8 VIN: U CARB Naturally Aspirated GAS |
| • 1977 GMC K25 |
Base |
5.7L V8 VIN: L CARB Naturally Aspirated GAS |
| • 1977 GMC K25 |
Base |
7.4L V8 VIN: S CARB Naturally Aspirated GAS |
| • 1977 GMC K25 |
High Sierra |
5.0L V8 VIN: U CARB Naturally Aspirated GAS |
| • 1977 GMC K25 |
High Sierra |
5.7L V8 VIN: L CARB Naturally Aspirated GAS |
| • 1977 GMC K25 |
High Sierra |
7.4L V8 VIN: S CARB Naturally Aspirated GAS |
| • 1977 GMC K25 |
Sierra Classic |
5.0L V8 VIN: U CARB Naturally Aspirated GAS |
| • 1977 GMC K25 |
Sierra Classic |
5.7L V8 VIN: L CARB Naturally Aspirated GAS |
| • 1977 GMC K25 |
Sierra Classic |
7.4L V8 VIN: S CARB Naturally Aspirated GAS |
| • 1977 GMC K25 |
Sierra Grande |
5.0L V8 VIN: U CARB Naturally Aspirated GAS |
| • 1977 GMC K25 |
Sierra Grande |
5.7L V8 VIN: L CARB Naturally Aspirated GAS |
| • 1977 GMC K25 |
Sierra Grande |
7.4L V8 VIN: S CARB Naturally Aspirated GAS |