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    Throttle pedal position sensor -P0121

    Oh yeah, it definitely took a little time for it to learn where it should be idling.. But no more CEL's!
  2. C

    power programmers

    I have a bully dog gt tuner.. It really made the truck come alive, as far as gas mileage, I've noticed small gains but nothing to really write home about.
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    Throttle pedal position sensor -P0121

    Already did that.. But thanks
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    Throttle pedal position sensor -P0121

    Scared the **** out of me when I reassembled the intake and started it the first time, it idled at about 3k rpm!
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    Throttle pedal position sensor -P0121

    Yes, I had the same issue, I replaced the throttle position sensor and the pedal assembly, and it was still throwing the P0121 CEL. Took I to a dealer here in SoCal and they said it needed a new throttle body and a couple hours time to reprogram the ECU. For around $800. I took my truck from...
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    Help

    *bangs head against wall* 'merica
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    Tahoe programmers...who is using them and what were your results?

    I have a bully dog GT tuner on my 2008 Tahoe. The thing works great, the truck really came alive. As for mileage, no real savings because I enjoy the fun of the added horsepower. I am anxious to get it dynotuned after I get my cam.
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    Plan on doing a big swap

    yes, almost everything will be a direct swap/ extra part for your Tahoe. Including the rear end. (it may be a different a different gear ratio though.
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