03 Hummer H2

Has anyone installed a keyless, alarm, remote start and window automation on one of these?

I need the wiring color codes.

I will also be doing an overhead video system and an Alpine nav. Any help or feedback is appreciated.

Thanks.

I haven't done one, but I hear it's just a rebodied Tahoe.

So, the wiring will be the same as a Silverado, Escalade, Sierra, etcetera.

If you can't get any 2003 information, get yourself a 2002 sheet, because most (not all) of the remote start wiring is the same.

The major change is in the doorlocks; for 2003 they are controlled by the car's databus, so you'll need a special interface module to add keyless. There are several brands available, but you can try transponderbypass.com to start.

I'm also told that you can get the locks as plain ol' negative trigger, but you have to run wires all the way to the lock/unlock switch near the tailgate....and you have to run a wire into the door for factory disarm...easier to just buy the module, I think.

Also, some of those modules will do window automation via the databus; I heard that one is made by PAC www.go2pac.com.

I did a remote starter like Chris said it's the same thing as other gm truck and i used the transponder bypass for tto control the doorlocks and the alarm . the best thing is to use a passlock module that you plug on the data wire so you don't have to remove the dash every thing you need is near the brake pedale and kick pad.

here are some color codes:
12V            red (x2)      ignition harness
Starter        yellow        ignition harness
Ignition       pink          ignition harness
2nd Ignition   white        ignition harness
Accessory      orange        ignition harness
Power lock     lt. blue      pur plug, pin B3 at BCM*
Power Unlock   white        pur plug, pin B2 at BCM*
Parking Lights brown (+)     driver kick panel
Door Trigger   LF gray/black, RF BLACK/ white both at door mdules for their respected doors; LR lt blue/black pin A3 at BCM*, and RR is lt GREEN/ black pin A2 at BCM*; use all four wires and diode isolate each.
Trunk/Hatch    pink/black    pur plug, pin A1 at BCM*
Fac Arm        arms on lock
Fac Disarm     lt. green     driver door module (in door)
Tach***        white        pin 10 grn plug at PCM**

*BCM is located behind headlight switch, has 6 plugs coming out of it.

**PCM is located under hood on driver side next to battery

***Tach can be found behind instrument cluster or can go to any injector and use the wire that is NOT pink


Remember to check all these with a DMM to be sure they are correct.