| Vehicle |
Sub Model |
Engine |
| • 1977 GMC K25 |
Base |
5.0L V8 VIN: U Chevrolet 16Valve 2BBL Naturally Aspirated OHV |
| • 1977 GMC K25 |
Base |
5.7L V8 VIN: L Chevrolet 16Valve 4BBL Naturally Aspirated OHV |
| • 1977 GMC K25 |
Base |
6.6L V8 VIN: R Chevrolet 16Valve 4BBL Naturally Aspirated OHV |
| • 1977 GMC K25 |
High Sierra |
5.0L V8 VIN: U Chevrolet 16Valve 2BBL Naturally Aspirated OHV |
| • 1977 GMC K25 |
High Sierra |
5.7L V8 VIN: L Chevrolet 16Valve 4BBL Naturally Aspirated OHV |
| • 1977 GMC K25 |
High Sierra |
6.6L V8 VIN: R Chevrolet 16Valve 4BBL Naturally Aspirated OHV |
| • 1977 GMC K25 |
Sierra Classic |
5.0L V8 VIN: U Chevrolet 16Valve 2BBL Naturally Aspirated OHV |
| • 1977 GMC K25 |
Sierra Classic |
5.7L V8 VIN: L Chevrolet 16Valve 4BBL Naturally Aspirated OHV |
| • 1977 GMC K25 |
Sierra Classic |
6.6L V8 VIN: R Chevrolet 16Valve 4BBL Naturally Aspirated OHV |
| • 1977 GMC K25 |
Sierra Grande |
5.0L V8 VIN: U Chevrolet 16Valve 2BBL Naturally Aspirated OHV |
| • 1977 GMC K25 |
Sierra Grande |
5.7L V8 VIN: L Chevrolet 16Valve 4BBL Naturally Aspirated OHV |
| • 1977 GMC K25 |
Sierra Grande |
6.6L V8 VIN: R Chevrolet 16Valve 4BBL Naturally Aspirated OHV |