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2003 GMC 2500 PU -heavy duty -need diagram

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=6677
Printed Date: June 10, 2024 at 11:37 AM


Topic: 2003 GMC 2500 PU -heavy duty -need diagram

Posted By: mobileinstallat
Subject: 2003 GMC 2500 PU -heavy duty -need diagram
Date Posted: December 14, 2002 at 1:13 PM

I have the 2002 but would love to see a 2003.




Replies:

Posted By: Velocity Motors
Date Posted: December 14, 2002 at 4:49 PM

This is for the 2003 GMC PU

|       ITEM      |     WIRE COLOR     |POL|       WIRE LOCATION        |
|              12V|red (x2)            |+  |ignition harness            |
|          STARTER|yellow              |+  |ignition harness            |
|         IGNITION|pink (12 awg)       |+  |ignition harness            |
|  SECOND IGNITION|white               |+  |ignition harness            |
|   THIRD IGNITION|pink (18 awg)       |+  |ignition harness            |
|        ACCESSORY|orange              |+  |ignition harness            |
| SECOND ACCESSORY|brown               |+  |ignition harness            |
|       POWER LOCK|see directfax       |   |                            |
|     POWER UNLOCK|document #1601 *2   |   |                            |
|       LOCK MOTOR|gray                |   |driver door module in door  |
|     UNLOCK MOTOR|tan                 |   |driver door module in door  |
|    DISARM DEFEAT|tan                 |   |pass. door module in door   |
| PARKING LIGHTS +|                    |   |                            |
| PARKING LIGHTS -|gray/black          |   |brown plug @ BCM *1         |
|       HEADLIGHTS|                    |   |                            |
|     DOOR TRIGGER|gry/blk(L),blk/wht(R|-  |each door module in door *3 |
| DOME SUPERVISION|use door trigger    |   |                            |
|  TRUNK/HATCH PIN|                    |   |                            |
|         HOOD PIN|                    |   |                            |
|TRNK/HTCH RELEASE|                    |   |                            |
|  FCTRY ALARM ARM|arms with lock      |   |                            |
|FCTRY ALRM DISARM|lt. green           |-  |driver door module in door  |
|       TACHOMETER|NOT pnk, blk, or brn|   |any ignition coil           |
|      SPEED SENSE|                    |   |                            |
|       BRAKE WIRE|white               |+  |brake pedal switch          |
|     HORN TRIGGER|black               |-  |steering column             |
|           WIPERS|pink                |-  |steering column             |
|  LF WINDOW UP/DN|blue - brown        |A  |driver window motor         |
|  RF WINDOW UP/DN|blue - brown        |A  |passenger window motor      |

Notes:
NOTE: This vehicle has the passlock II immobilizer system that, when adding a remote start, must be interfaced with. Use DEI part 555t or 555L. The passlock II wire colors are yellow, black, and RED / white (not used).  *1 The BCM (Body Control Module) is under the driver side dash.  *2 On base model trucks the lock wire is lt. blue (-) and unlock wire is white (-). They are in the lt. blue plug at the BCM.  *3 On base model trucks the door trigger wires are in the lt. blue plug at the BCM. On 4dr trucks the LR door trigger is lt. blue/black, and the RR is lt. GREEN/ black. They are in the purple plug at the BCM. Use all wires and diode isolate.



-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA


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