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    nick jr's Avatar
    nick jr Posts: 27, Reputation: 1
    New Member
    		  
    #1

    Oct 18, 2009, 06:21 PM
    Jeep Transmission trouble
    I have a 99 Jeep Grand Cherokee Limited, 4.0 L, 6 CYL, AWD, Auto, 89,000 miles. My problem is that on the first start of the day when engine is cold, the transmission won't shift from 2nd to 3rd until truck warms up. After warm up truck shifts smoothly. Any suggestion on what the cause can be? I just recently changed trans fluid and filter because of this problem but it didn't help. I thank you in advance for your help.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Oct 18, 2009, 06:28 PM

    . Did you use ATF+4?

    . Did you disconnect the negative battery cable overnight, in order to force the PCM to relearn all shift points?
    nick jr's Avatar
    nick jr Posts: 27, Reputation: 1
    New Member
    		  
    #3

    Oct 18, 2009, 06:38 PM

    Yes, bought Mopar ATF-4 and Mopar filter from dealer.
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