03 Chevy Truck 1 ton

I need a wire diagram for this vehicle, also anything I should be aware of before i install a remote start alarm, I am adding power door locks and I bought a passlock bypass kit. Thanks, Morgan

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      | NOTE: This vehicle has the passlock II immobilizer system that, when adding a remote start, must be interfaced with. 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.J Rilla

Owner/Installer

I cant find the passlock wires, help!!

Passlock wires are very thin gauge wires coming from the key cylinder. The ones you need are ORANGE / Black and Yellow. I would suggest using a PLDATA to bypass the passlock though since it makes the install a piece of cake and it only takes a few minutres to install. You should also get a GMDL4 databus interface module. Take a look at them here: GMDL4 PLDATA You should definatley get the GMDL4 if not both though.J Rilla

Owner/Installer

Ok i have a yellow, RED / white, and a black. I have a bypass module and cut the yelllow wire and put them to the specified locations on the bypass thing and it wont start.

I have an 03 chevy pickup that will not start, it turns over but then dies. I hooked up the passlock 2 system and cut the yellow wire and noow it wont even start with the key. I pulled off the neg batt canble and and it sdtill dont work. help thanks

I just insstalled rs on 03 cjhevy pu, it wont start at all now, just turns over. I installes the passlock 2 thing and it said cut the yellow wire coming off the key cylender, i did now it woint start. help fast please

OK you need to tap that black wire. I thought all pickups and SUVs were ORANGE / Black, but maybe on the 2003 they went to Black. Didnt your bypass module tell you to hook up a wire to the black passlock ground wire? What bypass module is it? J Rilla

Owner/Installer

Did you hook up your ground out when running wire to the bypass module ?Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

I figured it out. Thanks for all of the help, you guys are great! Morgan