| GMC | Sierra 2500 HD | BASE | 6.0L V8 CNG OHV, 6.0L V8 Gas OHV |
GMC Sierra 2500 HD BASE
6.0L V8 CNG OHV, 6.0L V8 Gas OHV | Front Crew Cab Pickup 4-Door |
| GMC | Sierra 2500 HD | BASE | 6.0L V8 CNG OHV, 6.0L V8 Gas OHV |
GMC Sierra 2500 HD BASE
6.0L V8 CNG OHV, 6.0L V8 Gas OHV | Front Extended Cab Pickup 4-Door |
| GMC | Sierra 2500 HD | BASE | 6.0L V8 CNG OHV, 6.0L V8 Gas OHV |
GMC Sierra 2500 HD BASE
6.0L V8 CNG OHV, 6.0L V8 Gas OHV | Front Standard Cab Pickup 2-Door |
| GMC | Sierra 2500 HD | BASE | 6.0L V8 Flex OHV, 6.6L V8 Diesel OHV Turbo |
GMC Sierra 2500 HD BASE
6.0L V8 Flex OHV, 6.6L V8 Diesel OHV Turbo | Front Crew Cab Pickup 4-Door |
| GMC | Sierra 2500 HD | BASE | 6.0L V8 Flex OHV, 6.6L V8 Diesel OHV Turbo |
GMC Sierra 2500 HD BASE
6.0L V8 Flex OHV, 6.6L V8 Diesel OHV Turbo | Front Extended Cab Pickup 4-Door |
| GMC | Sierra 2500 HD | BASE | 6.0L V8 Flex OHV, 6.6L V8 Diesel OHV Turbo |
GMC Sierra 2500 HD BASE
6.0L V8 Flex OHV, 6.6L V8 Diesel OHV Turbo | Front Standard Cab Pickup 2-Door |
| GMC | Sierra 2500 HD | BASE | 6.0L V8 CNG OHV, 6.0L V8 Gas OHV |
GMC Sierra 2500 HD BASE
6.0L V8 CNG OHV, 6.0L V8 Gas OHV | Front Crew Cab Pickup 4-Door |
| GMC | Sierra 2500 HD | BASE | 6.0L V8 CNG OHV, 6.0L V8 Gas OHV |
GMC Sierra 2500 HD BASE
6.0L V8 CNG OHV, 6.0L V8 Gas OHV | Front Extended Cab Pickup 4-Door |
| GMC | Sierra 2500 HD | BASE | 6.0L V8 CNG OHV, 6.0L V8 Gas OHV |
GMC Sierra 2500 HD BASE
6.0L V8 CNG OHV, 6.0L V8 Gas OHV | Front Standard Cab Pickup 2-Door |
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