2003 yukon xl alarm remote start

Well I was told it was an 2002 but It was really a 2003 I had my buddy install a avital 4400 with a 556lw passlock but since the truck ended up being a 2003 I need to install a 457gw,the alarm works and remote starts but not the door locks or door triggers because it needs the 457gw. How hard would this be to swap out being I never installed an alarm remote start?well?

It's easy. Not too many extra wires except for the door lock inputs and such.Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

you could put in a dei 456L. it does locks via databus, then you don't have to worry about pulling out the 556L or messing with anything other than the locks

unfortunatlly my distributor only had the 457gw in stock, i guess i will have to try to do it ,thanks.well?

Well I got the 456lw i took the dash apart ther is two small wire green & blue and 1 thicker dk.green wire hanging out of the alarm. I don't no where they go or what ther for since my buddy decided 2 keep the install manual thanx dog I kno ur reading. I grounded the 456lw and connected 12v const. I suppose the plug w/the sm.green & blue wires from the 456lw go into the brain , I don't know where the yellowblack wire go from the 456lw. if u can plez help me out,thanxwell?