02 Trailblazer

I have an 02 Trailblazer and am installing a DEI 455G interface and a GM VSC 3000 OEM alarm.What will this interface eliminate on this alarm install(as far as connecting alarm)?Any help will be appreciated!!!

you wont need to go into the door for the locks. and it will also turn off the factory alarm if you have one.

Are the wires to and from this DEI module color coded to match fac colors and GM alarm harness(on vsc3000)?Do I have to still tap in to the domelight supervision output  on alarm module even though I connected DEI module to this circuit already?   Thanx___

the only wire you need to hook upto the car is the violet to the back of the diagnostic plug ,power, ground and your lock&unlock inputs dont use the domelight thru it it falses go directly to the light and use positive input to the alarm.

Thanks for the help but I'm still having problems.The keyless entry works ok but when I lock doors  with remote and alarm is armed the dome light circuit is on a delay and by the time the light goes out the alarm goes on.I tried disconnecting the gray/bk from the the underdash light circuit to DEI module and then the alarm doesn"t go off at all----What am I doing wrong---Here is a link tothe DEI website:http://www.directed.com/guides/pdfs/N455G_11-01.pdf Also my GM alarm wires are as follows:Orange  (-) 500mA armed output;   White (+)/(-) selectable light flash output;  WHITE/ Blue (-) 200 mA channel 3 selectable output;  BLACK/ White (-) 200 mA Domelight supervision output;  Green  (-) Door trigger input,zone 3;  Blue  (-)Instant trigger input ,zone1;  Violet  (+) Door trigger input,zone 3;  Black  (-) chassis ground;  Yellow  (+) switched ignition imput ,zone 5;  Brown (+) siren output;  Red (+) constant power input; RED / White (-) 200mA channel 2 programmable output-----Thats it please help me!!!! 

a p.s. on previous post I did notice that when I use remote to lock doors the domelight circuit comes on for aprox 30 seconds then shuts off and when I use unlock the domelight does not come on at all(is this backwards or what)????

Connect the GRAY/BLACK wire from the DEI unit to the GRAY / BLACK wire on the underdash light. This light is not affected by the dome light delay.Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

I did have connected up and when I locked doors with remote dome light came on and alarm came on before dome light shut off.