Question about 1989 GMC Sierra

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My 1989 GMC Sierra Pickup idles too high - where is the adjustment located?

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  • 1girl_san Jan 21, 2009

    Actually once I changed the EGR valve the idle became normal.

  • barrytrh Mar 07, 2009

    sometimes when i put it park the engine is at a high idle. also the transmission wont shift into overdrive

  • Anonymous Mar 24, 2014

    Idles to high

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It's your torque converter it let loose you will either have to get a new tranny or get your torque converter fixed it happened to my truck im still saving up before i can fix it. im a mechanic with a certified level two mechanics and starting my level three this spring.

Posted on Jan 21, 2009

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Dirty fuel filter

Posted on Jan 11, 2009

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