Search results

Upshift Help

March 2022 I finished my transmission rebuild on a 4L80 where I put the Transgo reprogramming kit, and AFL repair kit in, I used Transmission Bench videos and master rebuild kit. I also installed a Tru-Cool 40K with a thermal bypass as I live in a mountainous area and live full time in a slide...
- Rschap
- Thread
- Aug 14, 2023
- Replies: 7
- Forum: Transmissions
No Reverse 4L80

This time last year I rebuilt my 4L80 and now reverse isn't working, when I manually drop into 2nd on downhills it also doesn't work though manual 3rd works fine. Works great going forward in drive and it appears to work fine manually shifting through the gear except for the downhill...
- Rschap
- Thread
- Jan 24, 2023
- Replies: 5
- Forum: Transmissions
Poly Bushings

I've got a 99 classic K3500 and I'm looking for a poly bushing master kit. I've always used energy suspension but their website only has a master kit for up to a 97 for these trucks, but up to 98 for the K1500 and K2500. Has anyone ordered this set and put it in a 98 or 99 classic K3500? Or tips...
- Rschap
- Thread
- Aug 31, 2022
- Replies: 9
- Forum: Stock Suspension + Bolt On Kits
Trouble Shooting

I could use a little help troubleshooting. I have a 99 classic, K3500 that I blew the tranny on 2+ years ago. I finally got around to rebuilding the tranny, getting it reinstalled last week. During the test drive it acts like it’s in 4 low as far as shifting and power but the front wheels aren’t...
- Rschap
- Thread
- Mar 15, 2022
- Replies: 3
- Forum: Transfer Cases