4l80e no shift up or down

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4l80e no shift up or down

Home > Discussion Forum > Mechanic's Corner - Transmissions

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All Messages in Thread	Author	Date
4l80e no shift up or down	Scott	11-28-05
I have a 4l80e installed in a monster jeep with a 454ci engine. The trannie works when manually shifted in reverse, neutral and drive, although once in drive (1,2,d, or od) it will not auto. shift. Its starts in 2nd or third gear and stays there no matter the speed. Also if shifter is in any drive gear position and is changed to any other position there is no change. ex. shift from drive to 2nd, no down shift. or 1st to 2nd, to drive no upshift.
Re: 4l80e no shift up or down	Matt	2-20-06
Hey - You might try installing a Transgo Shift kit - apparenetly the stock valve body spacer can wear and prevent propper shifts. Cheers Matt