Auto Trans for 86

[OSO86]

I am interested in finding a graphic for the auto trans in my '86. I need to know where the overdrive clutch lock slenoid or relay is located and if I can buy it and replace it myself? My tranny works fine, it just doesn't lock in overdrive any more. Thanks for any feedback.

 

[c4c5specialist]

HI there,
If you are talking about the torque converter clutch solenoid, on the 4L60 or a 700R4 in the old technical speak, this is located directly at the front of the transmission, under the filter.
So, with that in mind, you will need to drop the pan, and the filter.
If you look at the hole for the filter, and your feet are laying to the rear of the vehicle, and you are on your back. To the drivers side of the pan, there is a solenoid, with 2 wires that point directly up, and goes into the same aluminum body at the filter.
Now, as a sidebar, please remember, that there is also a temperature switch, that, if defective, will NOT allow the TCC solenoid to engage. So, you will also have to check the temperature switch also.
Please let us know if you need further asstance, c4c5

 

[OSO86]

Thanks for the info, I called one of the local Chevy dealerships and gave them the same description of what I was experiencing and they told me that it was probably the valve bodies and that parts were not available any more, so I would need to get a new rebuilt tranny. I guess their trans people don't know very much? I'll use your info to get the needed parts if possible.

 

[c4c5specialist]

HI there,
Parts are still available, if not from GM, which I found, or through aftermarket transmission parts specialist, ATP.
Please keep us posted on your condition, as if you would like to confirm this, you can perform a simple test, while driving, to confirm the function.
Please let us know if you would like to proceed, c4c5