FLiP726

P engages park but shifts to reverse after a second or two while it still says P
R
N Pretty much the same as D
D same
3
2
1

I also don't have 2-3 WOT, pegs the redline and I let off, the only time it shifted 2-3 was when I let off and eased back to WOT

Before this happened the transmission mount was shot, I replaced it with a Poly mount and now it's all sorts of jacked up.

Help please, is my transmission shot? I found a 96 4L80E which might be the upgrade/replacement if the 4L60E is going down hill.

hrcslam

Check your shifter cable. It's either adjusted wrong or has a broken shielding or out of the bracket. The 2-3 shift sounds like the 3/4 pack is possibly going out, but could be because the cable. That's my guess. Also check your fluid level.

JustAFooL

iTrader: (45)

Shifter cable would also be one of my first guesses, possibly adjusted wrong when the mount was changed.

FLiP726

Thanks guys, going to check that out.

FLiP726

You guys are awesome! The shifter cable was only held with 1 instead of two oil pan bolts, shifts great and stays in the gear it's suppose to be in. I did impulse buy on a 96 4L80E, I guess I can get that built up for when the 4L60E decides to go away.

hrcslam

Or, you can build up the 80e now, get everything you need for a quick swap when ready, and sell your 60e as a good working unit to recoupe some of the cost. Then you'll have a trans good for what ever you decide to throw at it.

Just remember that the 80e has a shorter OD than the 60e does. Good for the track, not good for the gas mileage...

Thanks for the update!

FLiP726

I read more and more in the 80 swap, I have a 98 has there been a break in having a 98 ECM able to control the 80?