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1999 GMC Yukon Denali Question: transmission whines loudly in 1st gear and reverse, will not move in reverse.

 

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bigred1vet, Oklahoma City, OK, March 01, 2013, 03:36
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will move in 1st and then runs fine and sounds fine after shifts to 2nd. what are possible causes and likely fixes.

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    pushrod March 01, 2013, 05:00
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     Master

    Lo/reverse clutch worn, internal fluid leak in clutch apply circuit, let a trans. tech check it out but prob. no easy or external fix, worth a look though. Good luck!

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    bigred1vet, March 01, 2013, 12:40
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    Good start point. I had no clue. Thank You for the info.

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    pushrod, March 01, 2013, 12:50
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    There are a couple of tricks that might work but you need a transmission mechanic to check it not a trans. chain store.
    Most places just want to swap it out, may need that but it is worth a look first!

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    bigred1vet, March 01, 2013, 18:48
     Rookie

    Thanks again. I know an independent trans. mech. that can look at it next week.

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    pushrod, March 01, 2013, 20:31
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    Let us know what you find out and good luck with it!

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