Hi peeps, I have a 1992 g30 sportvan 350ci 4L80E transmission. first I lost overdrive then I lost 2nd and 3rd it is stuck in 1st however if I keep accelerating past the shift point it will shift into second and sometimes 3rd like I have a radical shift kit. I was told there is a fuse trhat controls this but I cant find one anywhere for the trans..no listing on all data either so im wondering how accurate the info was on a 96 its in the fuse box. I was also told that the brake switch can cause this problem but I cant figure out how it would affect the trans so again im wondering how accurate that info is. I would appreciate any info you can give me. Thank you MUDDA
- posted
18 years ago