06 GTO randomly wont prime the fuel pump when hot... if you turn the key on (but not start) several times, it will eventually do the prime and then fires right up - sometimes takes 2 or 3 key ons, sometimes takes 10 - very random, but always when hot... also, it is the signal coming from the PCM that is the problem - verified with a test light that the problem is from the PCM.

any ideas???