gmdlbp locking out radio

catback wrote: only thing about it that doesn't sound feasible is the "lock w/ ign off"...In general any lock action that takes place with ignition turning off would be unlocking,

Good catch. That's what I meant. UNLOCK. And guess what an UNlock command does to RAP? That's right, CANCELS it. Carry on.

The problem doesn't correlate with actual starting using the remote start. It seems to correlate with using the keyless entry function. Shouldn't the BCM reset with ignition key use? Is there a way to test if the BCM is sending a wake up data signal to the radio interface? This would allow me to determine if it is a incompatibility between the gmdlbp and PAC rp4-gm11 and which one to replace. I saw a suggestion in an earlier post to try a different bypass module, any suggestions?

davep. wrote: catback wrote: only thing about it that doesn't sound feasible is the "lock w/ ign off"...In general any lock action that takes place with ignition turning off would be unlocking, Good catch. That's what I meant. UNLOCK. And guess what an UNlock command does to RAP? That's right, CANCELS it. Carry on.

Whatcha talkin bout willis? Define cancel In my experience, lock and unlock has no bearing on RAP (Retained Accessory Power).

I switched out the Xpresskit GMDLBP for an idatalink ADS-DLSL GM1. The idatalink unit seems to have quicker response, and has eliminated the relock after using the key fob to lock, also the factory alarm comes on instantly. Unfortunately the random radio not coming on still exists. I trouble shot down to the following. 1. Only occurs with use of remote start key fob to perform any function, and is random. 2. Constant power remains at the radio and PAC RP4-GM11 module. 3. Unplugging the PAC module and plugging back in resolves issue. So the PAC RP4-GM11 must not be compatible with the remote start or the bypass unit. I emailed PAC and their answer is that there are blown fuses, even after I explained all the fuses are okay. My temporary fix, until I can get a different interface, is a simple inline toggle switch in the constant wire feeding the RP4-GM11. I simply turn it off then on whenever this problem occurs.