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Tuner in Training
DOD Delete
Attached is a file of my current tune. Work I have done to the truck includes non DOD cam, non DOD lifters and all associated gaskets and o rings. The problem is even after I have disabled the DOD and did no report on the cylinder codes including unchecking the ses box's it still runs on 4 cylinders. It sounds like for a split second when it first starts it is running on all 8 but almost instantly switches to 4. Any ideas what I am missing?mckenzies 2008 gmc.hpt
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You will get a lot more help over in GEN4 GM.
Have you read the codes though? Maybe P3400 needs to be turned off as well.
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Tuner in Training
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Tuner in Training
I was just looking at the tune and realized it was an old tune I have disabled p3400 to no avail.