| Duramax Diesel Specs Overview of the 6.6L Duramax including technical specifications, power ratings, & history. Covers the LB7, LBZ, LLY, & LLM versions of the 6.6L Duramax diesel engine, which is used to power GM/Chevrolet HD trucks. | |
| GMC Sierra HD | Official Official homepage of the Sierra 2500 HD & 3500 HD, including truck specifications, model pricing, & more. | |
| GMC Sierra 1500 | Official Official homepage of the GMC Sierra 1500, including model specifications, pricing, truck locater, & more. | |
| 67 -72 Chevy Trucks Discussion forum & online community of 67 - 72 Chevrolet/GMC pickup truck owners & enthusiasts. | |
| Chevrolet Silverado | Official Official homepage of the Chevrolet Silverado, presented by Chevrolet. View current model pricing, specifications, build your own truck, locate a truck near you, & more. Covers 1500, 2500 HD, & 3500 HD Silverado models. | |