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2004 Chevrolet Suburban 1500 Question: Transmission slipping but no CEL or DTC codes

 

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sfshooter, O Fallon, IL, July 02, 2013, 14:57
 Rookie

No indicator lights at all. Trans slipping from 1st gear on. Fluid level good, changed fluid and filter, still happening. Using a Matco MD9040 reader I get no DTCs. HELP!

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  • Answer #1

    gearhead89 July 02, 2013, 21:17
     Technician

    sounds like a bad transmission. the friction plates may have lost their friction material. how many km

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    sfshooter, July 03, 2013, 05:50
     Rookie

    117k on the truck. I thought that would be the problem but I was hoping there may have been a cheaper solution. Thanks for the response gearhead

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    gearhead89, July 03, 2013, 20:23
     Technician

    another possibility is sticky valves. try some lucas brand transmission fix. sometimes this will help. maybe even fix it if the friction plates are okay

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    sfshooter, July 04, 2013, 04:28
     Rookie

    Unfortunately you were right. Took it to an Aamco shop and 3rd and 4th gear are shot, most likely the friction plates. I'm disappointed with this Trans. I always did the services and didn't beat it at all. 2k for a rebuild. Thanks for the input gearhead. I appreciate it.

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