Thanks ya'll. He cleaned the IAC but no difference. Told him to get someone to run codes. A scanner should be able to engage/disengage the TCC solenoid. But I'm unsure where it is located on the 4r70w. May have to change torque convertors. Correction, the truck only has 150-160k. He's gone for reserve duty this weekend but will be off Mon. and may get to look further.Thanks again.