I am going through a project that involves using a 3800 S3 w/S2 intake and TB, a 2004 Grand Prix 3.05 ratio transmission, and *hopefully* controlled by a 2005 Impala PCM.
I have most of the "bugs" worked out of this, except for one thing...PASSKEY III. Here is the dilemma. I'm fairly certain I can disable it via the tuner, but...does this particular PCM need the BCM in order to keep the engine running? If so, I'm screwed, so please say I am worrying over nothing...and be truthful about it