Thread: Trans won't shift -- Disconnect battery and it's fixed?

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  1. #1 Trans won't shift -- Disconnect battery and it's fixed? 
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    Car has been sitting for a few weeks. Drove fine before being parked.

    Reconnect battery, pull out of parking spot up a hill, and about 10 ft out of the spot, car won't move. No reverse, no 1st 2nd D. Push car back in to the spot.

    Disconnect battery, reconnect, all is well...took car out for a drive, no issues.

    Seems like some sort of electrical issue to me. Anything I should be checking?
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  2. #2 Re: Trans won't shift -- Disconnect battery and it's fixed? 
    SE Level Member Transman304's Avatar
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    That is something I have never experienced or had a customer complaint like that. That transmission will still move in 3rd gear with trans unplugged. Fluid level ok? That's just bizarre I'm curious to see if someone has had this happen or have a explanation.
    Brad
    "If you can't fix it with a hammer you have an electrical problem"
    Like us on Facebook @ " Otto Matics"
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  3. #3 Re: Trans won't shift -- Disconnect battery and it's fixed? 
    Killa Bee Scottydoggs's Avatar
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    unhooking the battery reset the pcm, this will make things work again till it trips what ever code / electronic issue again. should have scanned it for codes before shutting it off. might of have a pending code. keep a scanner handy should it act up again.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  4. #4 Re: Trans won't shift -- Disconnect battery and it's fixed? 
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    There were no active codes but I didn't think to look at scanner for pending.

    Very odd. Hopefully doesn't happen again
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  5. #5 Re: Trans won't shift -- Disconnect battery and it's fixed? 
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    And fluid is good. Full, not burnt. No leaks
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  6. #6 Re: Trans won't shift -- Disconnect battery and it's fixed? 
    GXP Level Member GTPpower's Avatar
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    Any strange noises when it would not move?


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  7. #7 Re: Trans won't shift -- Disconnect battery and it's fixed? 
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    Quote Originally Posted by GTPpower View Post
    Any strange noises when it would not move?
    Nope. Drove it around 30mi today no issues....so odd

    I'm going to get it in the air this weekend and see if anything looks "off"
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  8. #8 Re: Trans won't shift -- Disconnect battery and it's fixed? 
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    With no power and unplugged. Like it was mentioned, you'd have 3rd.
    While I have never heard this one before....part of me is thinking, what electronically could do that...

    Maybe the pcs bled off too much pressure, hence no hydraulic pressure to engage the forward band. Resetting power either reset the pcm or unstuck the soleniod etc and did the trick. I'd chaulk it up to a single time technical difficulty if it doesn't seem to repeat itself
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