All the easy stuff has been done. New premium battery installed. All connections clean. Additional online research is showing that these GM's had a lot of BCM failures/issues. If the BCM is fried, will that hold out the passlock (anti-theft) system and keep it from cranking?? I don't think it an ECM issue. Won't the engine still crank and run in closed loop on it's closed loop presets even with an inop ECM?

Edited by jetmech1 (04/11/12 02:04 AM)