Supercharged111
Truly Awesome
- Joined
- Aug 20, 2015
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This has happened maybe 3 times so far. I started putting some miles on the 99 K2500 and on just a couple of occasions it has revved up a smidge on the 3-4 Upshift. It has a fresh converter, new harness, and new fluid/filter in the 4L80. This is the only hiccup I've observed with the power train and 99% of the time it's not there. Just wondering what may be some potential causes?