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TOTHEMAX! · 11-05-2007, 01:03 PM

scan the computer for codes.
check the vin with your dealer for a history.
make sure the transmission shifts well when its cold and hot
check for smoke at idle and when you get on it.
look for a pyrometer probe in the pass side exhaust manafold. signs of a chip

11-05-2007, 01:03 PM	#6
TOTHEMAX! Registered User Status: Offline Join Date: Sep 2006 Member ID: 55001 Pics: My Gallery Location: Montana Posts: 186	Re: 140K mile 2003 Duramax scan the computer for codes. check the vin with your dealer for a history. make sure the transmission shifts well when its cold and hot check for smoke at idle and when you get on it. look for a pyrometer probe in the pass side exhaust manafold. signs of a chip 2003 Chevy SB CC Duramax Diesel Edge W/Attitude Monitor KD Boost Valve Afe Stage 2 Air Intake 4" Magna Flow Turbo Back Exhaust Bilstein Shocks High Idle 1972 Chevy 3/4 Ton Project Truck AMSOIL DEALER