Tranny trouble
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Senior User
Joined: Jul 2006
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From: Adrian, Mi
Tranny trouble
I have a Superchips tuner for my 2003 6.0 liter diesel. I sent it back in for reprogramming because of a recall on my truck where they made some changes to the computer program. When I had the high performance program installed, I started having a soft shift. Usually this was when shifting from 3rd to 4th gear, (automatic). I had the tranny cleaned and flushed by my local dealer and installed the tow safe program. It seemed to be okay while pulling my travel trailer on vacation. When I returned, I put the high performance program back in and it started soft shifting again. It now has the stock program in it and does not seem to be acting up. Has anyone else experienced this problem?
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