'00 suburban won't remote start

I am so use to doing Toyota and imports, I hope this was a small oversight and simple fix.

Using XK06, it learned Passlock 2 resistance according to the LED flashes on the bypass.

-Car cranks and dies, dash displays "security" in yellow.

-I start the car with the key, press remote start(remote start takeover), and same thing, dash displays "security" in yellow.

-I just put the key in the ignition(I do not turn it) and try to remote start.  Same thing, cranks starts for a split second then dies.(Don't remember if the security light came on or not)

I know I did not hook up the factory alarm disarm.  I have been so use to doing Toyotas where OEM security turns off with keysense, that I just simply forgot.

Anyone else experience this with '98-'02 GM truck/SUV?

Yes, the unit was flashed with the PLXR 3.0, and the the unit was programmed before connecting ground while running.

Little bits of information I left out my OP lol.