All of a sudden i have TCC lock in ever gear.

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caincrx

Junior Member
Joined
Jan 4, 2023
Posts
1
Reaction score
0
Location
Sedro woolley WA
First Name
Caleb
Truck Year
1982
Truck Model
Custom deluxe K10
Engine Size
350
I have a 1982 K10 with a GM good wrench 4 bolt main 350 with edelbrock 1406 carb and proformer intake and HEI distributer, all emissions stuff removed and a rebuilt 1985 700R4. I got a carb spaces and installing it would mean doing some modification. I was checking things and found the fluid was pretty dark and the TV cable was kinked and some wire were broken. So I thought I'd give it some love. Well in the process of that I found out the its really important to have the TV cable geometry right, which it wasn't. So I made the geometry correction Bracket and made a new bracket to hold the TV cable and throttle cable level and straight.and changed the fluid and filter. But after everything was done it just would shift right. I kept adjusting the TV cable but couldn't get it to shift where it should and it seemed like it would shift more then it can being a 4 speed. I'd get 4 or 5 shift spots at times. And it would bog down bad at the 2-3 shift. So after wasting a bunch of time checking and readjusting I decided to hook up a TCC light and once I did the TCC is locked up in every gear. It unlock with low vacuum and if I push the brake. But re locks up as soon. I I'm off the brake. I had to wire up the TCC so it would work about 2 years ago and I know it worked fine when I was done. I don't think it's anything I did and may have been doing this for a few months. I'm just wondering what part is bad? Is it the pressure sensor? Or the TCC it self? And isn't there a temp sensor that won't let it lock up until it gets warm? Because it's lock as soon as I start the truck now. The trans has all the stuff for the 3 wire 3rd gear lock up but I'm just running the 2 wire 4th gear only lock that my truck came with stock. Is the 3rd gear lock up worth hooking up? I've been reading post on here for 5 years and they help me fix so many issue my truck has had. But this is my first post.
 

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
6,803
Reaction score
11,685
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
I have a 1982 K10 with a GM good wrench 4 bolt main 350 with edelbrock 1406 carb and proformer intake and HEI distributer, all emissions stuff removed and a rebuilt 1985 700R4. I got a carb spaces and installing it would mean doing some modification. I was checking things and found the fluid was pretty dark and the TV cable was kinked and some wire were broken. So I thought I'd give it some love. Well in the process of that I found out the its really important to have the TV cable geometry right, which it wasn't. So I made the geometry correction Bracket and made a new bracket to hold the TV cable and throttle cable level and straight.and changed the fluid and filter. But after everything was done it just would shift right. I kept adjusting the TV cable but couldn't get it to shift where it should and it seemed like it would shift more then it can being a 4 speed. I'd get 4 or 5 shift spots at times. And it would bog down bad at the 2-3 shift. So after wasting a bunch of time checking and readjusting I decided to hook up a TCC light and once I did the TCC is locked up in every gear. It unlock with low vacuum and if I push the brake. But re locks up as soon. I I'm off the brake. I had to wire up the TCC so it would work about 2 years ago and I know it worked fine when I was done. I don't think it's anything I did and may have been doing this for a few months. I'm just wondering what part is bad? Is it the pressure sensor? Or the TCC it self? And isn't there a temp sensor that won't let it lock up until it gets warm? Because it's lock as soon as I start the truck now. The trans has all the stuff for the 3 wire 3rd gear lock up but I'm just running the 2 wire 4th gear only lock that my truck came with stock. Is the 3rd gear lock up worth hooking up? I've been reading post on here for 5 years and they help me fix so many issue my truck has had. But this is my first post.
We need a dighram as to how you wired up the tcc and what solenoid you are using 1 or 2 wire.
 

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