I installed new 6.0l engine in the truck, in the process did a custom os upgrade (03) and reflashed calibration. Reassembled vehicle and everything is working except no spark and a flashing vtd light on key up. The vehicle is a 03 Silverado upgraded to 6.ol with etc, sts turbo, methanol, boost controller and now no spark! Does Efi live do vtd? maybe I am looking right at it and not seeing it!!!!
Thanks for the input.
madprof01
