TC switch?

[Jim Ross]

I have not followed the threads on this topic closely, so please forgive my basic question(s).

I have heard of folks installing a switch to lock up the TC in order to improve economy/efficiency in the automatic trannys.

How does this work and how involved is the work?

 

[DogramTD]

Friends, pardon me for posting a link to another forum here, but this is what I used and was very helpful. Remember to heed the cautions of this modification



3rd Gen Mystery Switch - DIY - Works great! - Dodge Cummins Diesel Forum

 

[Jim Ross]

Excellent response! I learned a lot.
Thank you.