Supporting Vendors forum for new product announcements and product discussion.

General discussion topics not related to the GM light-truck diesels.

Convert gas to diesel, or convert to a 6.2/6.5/Duramax/Cummins/Navistar/Isuzu/Perkins/Detroit/or ... diesel engine. Go here to see completed projects, works in progress, share your conversion or ask the experts.

Discuss and learn about Ultra Low Sulfur Diesel Fuel, Bio-Diesel, Straight Vegetable Oil, Waste Vegetable Oil, Fuel Additives, as well as Motor Oil, ATF, lubes, coolant and other fluids used in your diesel pickup.

Industry News relating to diesel light-trucks.

Learn more about GM's new medium-duty trucks and diesel engines.

2500HD/3500 gas 6.0L & 8.1L discussion forum.

Announce your diesel event or rally where all GM, Ford & Dodge diesel light trucks are invited.