Doc's Diesel Chevrolet/GMC 6.6L Duramax 10L1000 L5P Transmission Filter Kit 2020-2025Chevrolet/GMC 6.6L Duramax 10L1000 L5P Transmission Filter Kit 2020-2025. Doc's Diesel Transmission Filter Kits Doc's Diesel Transmission Filters are made to keep your rig shifting smoothly and running right.
