03 Silverado

you should be able to pick up the right diagram directly from this site, there are a series of link near the top of the page.

|       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            ||        ACCESSORY|orange              |+  |ignition harness            || SECOND ACCESSORY|brown               |+  |ignition harness            ||       POWER LOCK|use Directed module |   |                            ||     POWER UNLOCK|part #456G *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 If Directed module part #456G is not available, refer to directfax document #1601.  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

you should be able to find all of your wires under the dash............Good Luck

David

Ace Security

813-376-9778

Tampa

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