I'm still having a surging problem around 45-50 mph. As I have stated in earlier post, I've changed and checked all the items recommended on this site. The transmission was checked out, tech said the TC was good. Well I'm going nuts trying to fix this, sooo would it be worth trying to wire the TC for lock up and see if the truck still surges?

Gene007

 

I did not see youre previous problem but if you have cleaned all of the grounds very well and treated them with dielectric grease and this did not fix it you want to try the module that dtt sells that stops alternator noise.
this thing works!