changed the waterpump on a g37 and primary timing chain made sure all the cams and crank aligned up before i put the chain on put everything back together the way i found it and its just turning over wont start at all scanned to see if there is any codes and only one code showed up and its u0101 lost communication with TCM has anyone had this issue or a similar issue to what i have did timing and waterpump then no start any help or advice is greatly appreciated i really need help

 

First, double check all them ground wires

Did you drop the motor?
or pull the front of the car apart to get to the timing cover?

 

figured it out had to retime the whole motor again my cams moved when i was timing it and i didn't realize it thankfully no damage happened and i had to pull the whole timing cover again and realign everything made sure the chain didn't slip again and it worked started up perfectly