rescue1emt
Newbie
Hey everyone, I've been having some problems with my trans for a while now. Its a 4L60e in a 97 GMC K1500. When I first crank my truck up in the morning and hit the highway my tcc will lock up in overdrive and if when I tap the brake it frees up (all normal.) But after I've drove it for a around 5 min it will no longer lock up at all and its killing my gas mileage and building way too much heat (enough to set the trans into limp home mode.) ... I know its not the switch at the brake pedal, so is there a way to tell if it is the tcc or tcc solenoid.