VATS tuned out, Still my no cranking problem?

[kevins2000LS1]

Had the car tuned a few weeks or so back and had the VATs tuned out also. But with it tuned out will the key cylinder still cause the often no crank issue? I thought all the cylinder did was move a rod to the ignition switch on the column.

[Jayh]

I had mine tuned out and it still SECURITY'D on me. Had to install the Resistors in the Column to fix it. Havent had an issue since.

[2001NBMZ28]

Yeah, you need to bypass it with a resistor. The BCM controls VATS - you can tune the PCM to ignore the BCM fuel enable signal, but not the starter relay signal.