Hi guys my motor took a dump so i had to rebuild it well it took me about 8 months to do it .whem we go start the truck it starts runs for second and dies mechanic checked it and says tha vat is not letting it starthe tried doing the relearn procedure but no luck. Need help btw my truck is a 2010 silverado
Any help is greatlly appreciated im desperate

 

Is it the OE computer and 100% untouched. If it is theft relearn tell your mechanic to do it he should be more than capable of handling that and knowing 100% if it is passlock related. First place I'd start checking is block grounds. I don't understand how all these motor swaps on here have passlock trouble after changing a motor. These computers dont just fart and forget the passlock codes.

 

It is the oe 38E computer tuned by Justin at blackbear. Also the gauges work but when he puts his scanner on its tells him its not comunicating. He tried the relearn procedure several times but it didnt work he still gets that the vat is on in his scanner

 

Whats the DTC#