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1990 Chevrolet Suburban 1500 Question: wont shift

 

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danmandanman200, 5.7L V8, Portland, OR, December 25, 2009, 14:46
 Rookie

my truck wont shift until the gears wind completly out i dont know what it is help me!! call me 5033121161

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  • Medium-star Best Answer
    December 25, 2009, 20:04
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     Master

    It sounds like your kick down cable or Throttle Pressure Valve is stuck in the power position. Check to see if there is a vacuum line to your trans, if there is then make sure it is on correctly. Also take it off and make sure no fluid comes out, that is a sign that the Vacuum Transducer is broken and needs replacing. If no vacuum line, then make sure that the kick down cable works well, it is a cable that goes to your throttle body next to the throttle cable but it goes down to the trans. It should operate SMOOTHLY when you pull it. Best of Luck!

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  • Answer #2

    June 27, 2013, 19:40
     Rookie

    Try cleaning your MAF (mass airflow filter). I found this to be an issue where my vehicle would not shift up while accellorating or trying to pass. It would wind out and I would have to take my foot off of the gas to get it to shift. A dirty MAF also caused hesitation at take off.

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