Found the problrem guys thanks anyways..... he forgot to ground the pcm goin to motor
* 2002 Chevy Silverado RCSB w/ 4.3 to 5.3 swap
Installed: McGaughys full 2/4|HD hood/Z71 Airdam|Circle D Built Trans & 3200 stall|34" fans/radiator|True Trac w/ 3.73s|V8 Swap w/ Milled Heads and Comp valvetrain|Custom Grind 22x/23x Cam|Pacesetters LTs & ORY|Magnaflow|Wheatley Tune
Future Mods: Paint (Sunset Orange Metallic), milled 243s, possibly a 6.0 with either turbo or procharger
* 2008 GMC CC Texas Edition: stock with CAI
Doh!! The simplest things will kill ya. Glad you got it figured out! I'm sure I'm in for a few 'surprises' myself during my swap.