Duramax Lifetime Supporter
Join Date: Oct 2016
Location: Maurice, LA
Look under the truck on the passengers side. Do you see a Catalytic Converter (CAT) and a Diesel Particulate Filter (DPOF) behind that?
If the DPF is missing then the truck obviously has a tune because it will go into Limp Mode if it is not tuned.
2008 Silverado 2500HD CCSB LTZ Diesel
FASS 95 Lift Pump (with Baldwin filters), Edge Insight CTS Monitor on a Windshield Mount, Nicktane Fuel Filter Adapter w/ CAT 306-9199 UHE tertiary fuel filter, Bilstein 5100 Stock Height, Bushwacker Bed Rail Caps, AMP Research Bedstep, Fumoto oil drain valve, Dorman PS Oil cooler, Pioneer AVIC 7200NEX GPS/Stereo, Air Lift LoadLifter 5000 Air Bags.