2002 durango, remote start

Using D2D? Cannot do double pulse unlock using D2D, must use W2W or hardwire your locks.

Did you try what I mentioned and tap the unlock to ground and see if it started working correctly that way? (To see if the alarm is pulsing to slow)

I have not. Question, why would the xpresskit do single pulse unlock and it would unlock all four doors, but the Idata double pulses and it still doesnt unlock all four doors. The door unlock seems to be worse now and I have yet to get all doors unlocked upon disarm. This alarm was from the days when d2d didn't exist. I wish I could look into the firmware of the Idatalink and fix the lock issue. I have yet to dig into it anymore as I have had it torn apart more than I care to have had to.

I'm assuming the resistance that Idatalink uses isn't close enough to what the vehicle actually needs to see. Your best bet is going to be to cut the lock and unlock wire and check for the resistance and hard wire your locks. Had an issue similar to this with my buddys charger, couldn't get all four doors to unlock for the life of me. i ended up taking out the resistor for unlock and it worked flawlessly.