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4L80E in 1992 has only 2nd and reverse Michael 3-8-09  
I bought a 1992 gmc and after I got it it was shifting at high rpms. After about a month it wouldnt shift at all. I think it only has 2nd and reverse.

It doesnt matter if you have it in 123D or OD, its in the same gear, I think 2nd and it wont shift. Reverse works fine though. Any idea on whats wrong with it?
Re: 4L80E in 1992 has only 2nd and reverse rude 4-24-09  
This sounds familiar,check the valvebody,behind the manual valve theres a plastic plug that cracks or breaks.i suggest a mechanic expierenced with your trans,theres a lot invalved with this type of repair.
Re: 4L80E in 1992 has only 2nd and reverse Gord 9-23-09  
4l80e trans won't shift into third gear
Re: 4L80E in 1992 has only 2nd and reverse don podach 5-10-10  
Did this work i have same problem.My check engine light come on it wont shift,when light off it shifts fine.Please help iam stuck in missourri need to get home to virginia to work Thanks
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