Husband and I are still chasing the elusive misfire, rough idle, P0300 & CEL (and now intermittent stabilitrac service light) on my 2007 Tahoe. He's going to either do some more troubleshooting himself (or his mechanic friend) to continue to try to chase it down. We have a list of potential "fixes." It's loooong
Since we bought it from a daughter of the deceased owner, was not able to ask questions about maintenance/repairs. Looking at how clean the interior and the engine was, I'd have to assume that he took good care of it.
Of course the 1st thought is I'm having the dreaded lifter failure, but we're not getting any sounds/power issues that indicate a lifter failure.
I would love to know what, if anything, was done to it before I bought it (including the known issues that were put out in bulletins that we all now know about).
If this vehicle was serviced at a GM dealership, would any of those fixes (if they were done) likely show up on a carfax report? Maybe I can at least start with some sort of knowledge of what has been done before I purchased it without having to have anyone tear everything apart to find the cause of this dang misfire(s)? Husband hasn't worked on this vehicle before and he thought he could just pop off the spark plugs and wires and change them around to check to see if any were bad haha nope! Doesn't have the fancy boot remover.