code ?

[06dmax]

06 LBZ just recently through code U0101. lost communication with tcm. cant figure out whats causing it code only comes up after i start it but one i clear it it stays off till i shut the truck off and start it again. still drives fine and everything cant figure it out. any help or guidance is apreciated thanks guys

 

[Mike L.]

Check your ignition fuse first Check all positive and negative wires at the TCM. Check all grounds at the engine.