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Service stabiltrak/Traction control, loss of throttle....
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Question
Whiteboyz71
Been chasing my tail the last couple weeks trying to figure out why my Service Stabiltrak/Traction control warning is coming on and I'm also getting a loss of throttle I think may be associated with it. The check engine light is not throwing any codes. The warning comes on when the wheel is turned past 180 degrees in either direction, that tells me it's the steering wheel position sensor. I had it scanned & it only tells me there is a short somewhere in the system and is not showing any codes. The service stabiltrak/traction control warning light also clears itself and is off after every time the truck is turned off and it sits for 20min or so or longer then comes back on when the wheel is turned past 180 degrees in either direction again.
You guys think the loss of throttle is associated with the service stabiltrak/traction control warning? The loss of throttle issue always happens after it's been sitting awhile or over night and whenever it wants to anytime in between. The throttle usually picks back up after a few seconds of not trying to give it throttle, but has lasted as long as about a mile or so in some instances. I'm going to order a new steering wheel position sensor and TPS sensor next week and install them myself, I'll update with results.
If the steering sensor clears the Stabiltrak/traction control warning, which I think it will, but the loss of throttle continues with a new TPS sensor and steering sensor, what would your next guesses be? The truck starts and idles fine, so I don't think the crank sensor is bad, but what about the cam position sensor being bad or the throttle pedal sensor being bad with no codes being thrown? I've also tried a different throttle body off a known good motor and still had the same no throttle issue.
So far I've replaced the following:
New ground strap from firewall to front of head (drivers side)
New negative battery cable
New brake light switch
New air bag clock coil spring (seperate problem that is now fixed)
New air bag sensor (drivers side) behind the front bumper (found the case was split and needed replaced anyway)
Thanks for any and all replys.....
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