Replaced ECM had it flashed , Car dose not turn over , would not read key, replaced igntion with new key and lock cylinder, tryed theft deterrent relearn procedure, check codes and get B2960 security sys data wrong but valid , whats the fix ? how can it be wrong but valid ?

 

Stand by for a couple of days at most and I will try and see if my mechanic has a potential solution for you....

Update:

I just copied and pasted your question and e-mailed it to Matt. He is an ace with things like this. We might get an answer tomorrow and I will post as soon as it is received.

 

Hello, okay Matt responded. Hope this will give you a new approach to diagnois your problem.

Greg: Could be the pass lock sensor, the BCM or the vats needs to be relinked. The No crank started after the pcm was replaced?

Matt Snell
Paul's Automotive and 4x4 inc.
48 E 9400 S
Sandy, Ut. 84070
801-255-7472