2003 DOOR LOCKS CHEVY P/U

Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=2908
Printed Date: May 15, 2025 at 5:47 PM

Topic: 2003 DOOR LOCKS CHEVY P/U

Posted By: JMIELITZ
Subject: 2003 DOOR LOCKS CHEVY P/U
Date Posted: August 19, 2002 at 11:56 AM

i need the lock wires for the tailgate lock from the door lock wires on the 2003 chevy silverado?

Replies:

Posted By: jason h
Date Posted: August 19, 2002 at 5:49 PM

i think the new 2003 trucks use a datalink system. i tried to put alarm in one the other day and directed electronics did not have a wiring diagram on the truck.

Posted By: Big Dog
Date Posted: August 20, 2002 at 3:02 PM

Hey JMIELITZ,

Welcome to the wonderful world of databus! The 2003's exist in two models, the base model and an up-level. The base model is like the previous years. . .no problemo. However the uplevel has TWO control modules, one in each door and they communicate with the BCM using Class2 data. Not only do you have to go into each door and do a five wire reversal, but the door trigger wires are there too! That's a half dozen wires from each door! I'm sure we'll be seeing a databus module like we use in the Envoy. posted_image

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Prepare your future. It wasn't the lack of stones that killed the stone age.

Posted By: JMIELITZ
Date Posted: August 27, 2002 at 7:23 PM

thank you we will try

Posted By: oskar159
Date Posted: November 20, 2002 at 6:30 PM

I Had To Put 4 RELAYS in each of the front doors
fuse panel has the relays for the rear doors

Posted By: securinu
Date Posted: November 23, 2002 at 3:57 PM

aamp has a new module for the 03 chevy class II databus . it does locks alarm arm/disarm and the coolest feature window up/down and vent all off the violet databus wire. i am thinking time and money savings and extra money on all alarms for the extra features for the customer.....as for the door trigger it is on the bcm under the steering wheel at the far right plug and is gray / black ( + )