04 Trailblazer, Alarm, R/S trouble

i assume that this is the only bypass peice you are using...because it is all you need.

this product has a learn routine...unplug the 457 ...hold the micro switch while plugging in ...do not release...turn the key on but do not start...when the led on the 457 starts to blink...release and start the car.

that is the learn routine.  that should do it.   however i just replaced on in a customers car that was malfunctioning

xs

Use the right interface.  One wire connection to the truck, boom your done.

PGMDLBP (DLGMBP) - GM Doorlock Alarm & Transponder/Passlock Interface Data Bus Doorlock Alarm & GM Passkey/Passlock Interface: Lock/Unlock, Driver’s Priority Unlock, Trunk/Hatch, OEM Security Arm/Disarm, Door trigger Output (-) & Override the 2nd /3rd generation GM Passkey3 Transponder Immobilizer & Passlock 2 Immobilizer via data bus. Formerly 6 separate kits required to do what the PGMDLBP can do with one. Transponder included. No Key Required.

Check out www.peripheralelctronics.com, and on the product menu select security bypass interfaces or check out this site to order through email or over the phone https://www.the-musicstore.com/

The dome light problem has to be a programming issue since your domelights work with the lock. I would definetly check your install manual. With the car not starting i would also check the 457g. I've seen some wierd problems with those. For the security light try unplugging the negative terminal on the battery for ten minutes and see if it dissapears.

what wires did you connect from the rs3 to the 457gw?  did you make your connection to the data wire on the obdII connection after you had Everything else plugged in?  If not disconnect the data output wire from the 457g and then disconnect the 457gw harness.  Let it sit and discharge for 5 minutes.  Then plug it back in and the FINAL step in the install process willthen be to connect the data wire to the obdII connector.  I HAVE had issues with any bypass in these gm's if the data wire is connected before plugging in the interface where the interface wont learn the vehicle.  Neway if you are still having problems try DISCONNECTING the data wire and the passlock connections ( and any other connections you may have had to make with this bypass): return them to their original condition and try starting the vehicle....DOES the security light on the dash still stay on?  Does the dome light operate properly at this point?  If so you can almost for sure pin the problem on the 457gw.  I realize my original post did not offer you any ideas to fix your problem but thats because the problems you are having sound like they are related to the interface crapping out.  The peripheral part i suggested is a one wire connection to the vehicle and eliminates the need to cut into the passlock wires (unlike the dei piece).  One other thing to check...did you connect anything else to the remote starts status output?  If so (and you may not beliieve me but....) perhaps it is backfeeding into the 457g and causing these issues....this can easliy be fixed by isolating these parts from each other with a simple diode( no relay required for something like this)  These new GM trucks are IDENTICAL in wiring and when you have problems like this it is almost always an issue with your interface. 

yeah that'll do the trick