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Crazy Problem Today

1991 Views 15 Replies 5 Participants Last post by  GM Customer Service
:grrrrrr:So today I went to Sam's club, and when I came out I started my truck up and everything was fine. The problem came when I put it in drive. When it in drive, my ABS light came on along with the service traction control light and Stablitrak notification. I knew something was up, but I had groceries going bad so I had to try and drive home. So I pull out and every time it shifted it threw you back into your seat extremely hard. So I was trying to drive slow and try to keep the truck from shifting as little as possible. Then, out of nowhere, the speedometer started just jolting all around jumping up and down, then the truck just died going down the road at 40 mph. So I coasted to a stop on the side of the road and turned the key off for about 10 minutes. I tried starting it up and everything was back to normal no lights at all. I got home and plugged it up to my programmer that was not in my truck and the truck had thrown no codes!! I had no reverse for a day back in January, that also threw no codes.

Dealer said maybe the throttle body. I am going to take it to them today in about an hour or so and see what they can do. Probably nothing since it didn't throw a code, which makes me pretty mad.

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I know this sounds like a dumb question, but did you program the trucks computer for the larger tires??
Thats strange it didn't throw any codes. Are you running a CAI? Maybe a loose CAI clamp or a dirty MAF. A dirty MAF can send false signals to the trucks computer confusing it, but I would think it would throw a code.
Have you tried putting stock size tires back on your truck, aleast the rear and removing the programmer you used to adjust for the oversize tires and put the stock tune back in and see if anything happens then? Are you using the Edge programmer?
By any chance did the dealer or you have the f&r gears changed??
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