gmdlbp locking out radio

I have a 2003 Suburban that I recently installed an Avital 4103 remote start along with the XpressKit GM-DLBP. The problem I have is that it randomly locks out the radio on a daily basis. This requires me to remove the radio fuse and reinsert it to get the radio power again. The radio is an Alpine head unit with PAC RadioPro 4 interface, that I had no problem with before installing the remote start.

Where is your GMDLBP connected for data and where is the PAC RadioPro connected for data?

The GMDLBP data wire is connect at the back of the OBD II connection to the violet data wire. The PAC RadioPro is connected via adapter to the factory radio harness.

Ok what do you mean by locks out the radio? Does the radio not power up, power up but not respond, does the radio indicate it is "locked"? You can try a different module than the GMDLBP. There might be incompatibility between the two aftermarket boxes. It's really hard to say when you don't have a specific pattern for failure (when this happens or is done it always messes up).

The radio does not have power unless I remove the fuse from the fuse block and reinsert it.

When you reinsert the fuse does it power up immediately upon insertion or does it power up when the key is turned to accessory? Once on does the radio power off normally? If that's normal does it power back on normally? Just trying to find the pattern for failure/success. The BCM is responsible for sending the data message to turn on the radio once it sees the key turned on. The GMDLBP only has an interest in shutting down RAP after a remote start ends. The BCM has it's own ruleset for shutting down RAP.

I think I have found a pattern, let me give some detail. 1. Initially I powered the brown accessory 2 wire. My first trouble shoot was to disconnect it, the problem is the same. 2. When using the remote start the radio powers up prior to key insertion. 3. The following is the sequence that occurs when the radio loses power, requiring the fuse to be pulled and reinserted. a. The door is locked using the remote. b. After the lock cycles, a second lock cycle occurs and the horn honks. (this does not happen every time the remote is used). c. Next vehicle start (with remote or key) no radio power.

Does it make a difference in where the GMDLP gets its power? Red vs RED / White wire at the ignition harness?

No, it doesn't matter (where it gets constant +12V). I'm guessing the pink and pink/white are not connected/used on the gmdlbp. Which they shouldn't be. Does the Suburban have a factory alarm? The lock/unlock wires from the avital where do they connect? Your occurrence with the lock cycle is odd, the locks should only cycle once.

Here is how I wired Primary Harness H/1 alarm disarm-      not used H/2 alarm rearm-       not used H/3 ignition to alarm- not used H/4 activation input- not used H/5 ground when locked-not used H/6 horn output-       BCM gray plug pin B9 H/7 trunk release-     not used H/8 ground- chassis H/9 light flash-       BCM brown plug pin B2 Satelite 4 pin 1 negative status-     GMDLBP brown wire 2 negative accessory- Initially ran to relay to power         2nd accessory (now disconnected) 3 neg starter out-     not used 4 neg ignition 2-      not used Heavy 6 pin 1 ignition 1  pink at ignition harness 2 starter  yellow at ignition harness 3 accessory orange at ignition harness 4 12v + red at ignition harness 5 ignition 2  white at ignition harness 6 12v+ RED / white at ignition harness Door lock 1 neg unlock  GMDLBP blue wire 2 empty 3 neg lock GMDLBP green wire Remote Start 5 pin H2/1 neutral safety    Chassis ground through toggle switch H2/2 tachometer        white wire behind cluster H2/3 brake shutdown    white wire above brake H2/4 Hood pin hood pin H2/5 status 2 not used GMDLBP brown   status at satellite harness green   green at lock harness blue    blue at lock harness violet/white  not used violet data wire at obd 2 pink/white not used pink    not used orange not used red     red at ignition harness black   chassis ground