| thanks guys. my truck is (so far) all stock. I had a 2005 before this one, with Edge/Attitude and Banks cat-back. The 2007 seems to run a lot better than the 05 did stock. so far i just haven't seen the need to change anything. I will probably eventually do a cat-back to keep down the EGT's. Made a 200 degree difference in that 05.
this truck has 12K miles so I am right in line with other guys having this problem. Could part of it be that I have not been exclusively running ULSD? I have a scanner and I think I am gonna reset the code and see if it stays off before I take it in to dealer.
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07 Silverado Classic 2500HD LBZ Crew Short 4x4 LT3 Ally black w/grey leather |