Question about 1998 GMC Jimmy

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TPS in a 1998 GMC Jimmy

If the throtal Position Control Sensor went out on a 1998 GMC Jimmy how would it act, and where is it located on the vehicle?

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  • Anonymous Mar 20, 2014

    motor truns over ok but tries to start an also backfires when trying to start motor

  • Anonymous Mar 20, 2014

    motor tries to start and also loud backfire sometime when trying to start motor

  • Anonymous Mar 24, 2014

    wont shift into reverse

  • Anonymous Mar 25, 2014

    cranks but wont start

  • Anonymous Mar 25, 2014

    my gmc is knocking.Their was some water in the oil but not down in the heads.I have checked several things am i missing something

  • Anonymous Mar 25, 2014

    Where's the model spencer located at



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The tps is ususally at the side of the throttle body opposite where the throttle cable / tv cable mount.
sometimes it won't start, run, or run erratically. there are ways of testing this unit (by output voltage) before you commit to buying a new one. to test it you will need a dvom (digital volt ohm meter).

just a note: straight from the book... "a broken or loose tps can cause intermitten burst of fuel from the injector and an unstable idle because the ecm thinks the throttle is moving."

Posted on Sep 22, 2008


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