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hard shift

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4L80E Slipping out of OD When Warm

Hello, I posted about this truck just under two years ago and how the just-rebuilt 1997 4L80E 4x4 was losing 4th when hot and torque converter was not locking up after it slipped out of 4th, hard shifts, etc. (I'm linking it here...
- lrdavenport
- Thread
- Aug 16, 2026
- 4l80e 4l80e 4x4 4l80e swap hard shift k2500 k2500 5.7v8 no overdrive tcc tcc lockup transmission problem
- Replies: 2
- Forum: Transmissions
89 K1500 1rst to 2nd hard shift.

Hey everyone have 89 K1500 with new crate engine 5.7 and rebuilt transmission 700r4/4l60 and rebuilt rear end. Hard shift from 1rst to 2nd. It will shift between 15-20 mph. Transmission shop that rebuilt the transmission, I ask them to put a corvette servo in it, but it shifts to hard. How can I...
- swumpman
- Thread
- Aug 31, 2025
- accumulator hard shift servo transmission
- Replies: 19
- Forum: Transmissions
4L60/700R4 Slams Into Gear, Delayed 1-2 Shift

1992 C1500 with the 4L60 (not 4L60E) here. So the deal is I am already easily nauseated (especially after a cigar) and let me tell you when I throw the truck in drive or reverse it slams into gear so hard my stomach may go out the window. Also this week I just lost my 1-2 shift, or at least it's...
- Ruff Idol
- Thread
- Aug 3, 2022
- 4l70 700r4 dipstick fluid hard shift transmission
- Replies: 31
- Forum: Transmissions
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[Solved] 700r4 - Hard 1-2 shift, 2-3 light but not soft

Hey guys, I have a 1991 GMC Sierra k2500. My transmission shifts pretty hard into second gear, and you can definitely feel it shift into 3rd but it's not anywhere near the 2nd gear shift. Everything after 3rd is fine. I have checked my TV cable. It's as tight as it can go, and when moving it...
- ryanguy426
- Thread
- May 4, 2020
- 1-2 shift 1991 350 4l60 700r4 gmc hard shift sierra
- Replies: 4
- Forum: Transmissions