problem when I manually shift in 1st gear after transgo 4L80E

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Apr 23, 2006 | 11:06 PM

Dark Halo

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From: Texas

problem when I manually shift in 1st gear after transgo 4L80E

the tranny shifts fine now in "D" but when I drop it into 1st the rpm's build then it starts to move then feels like it hits netural. I have a 03 4l80e with a transgo and 3800 pi triple disk stall.

Apr 23, 2006 | 11:11 PM

thunder550

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From: Phoenix, AZ

Same thing happened to me, read from post #18 down.

http://www.gmfullsize.com/forum/showthread.php?t=42857

Maybe this will help a little...

Apr 24, 2006 | 06:46 AM

FLT

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From: Wood Dale, Illinois

Quote:

Originally Posted by Dark Halo

the tranny shifts fine now in "D" but when I drop it into 1st the rpm's build then it starts to move then feels like it hits netural. I have a 03 4l80e with a transgo and 3800 pi triple disk stall.

Are the rear band servo bolts tight with the metal shim gasket under the cover. In manual low the forwrd clutch is applied with also the rear band. How is reverse? Double check your directions make sure you didn't miss some thing.

Apr 24, 2006 | 11:05 PM

Dark Halo

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From: Texas

well today it was working fine and now I do not have reverse. In some fasion on the trip home today reverse stoped working and it fells like I have lost 1st gear.