I am trying to figure out the wiring for an IPPME module used to learn GM passlock codes. I have a chevy silverado 2002 with passlock II. I need to know what color the following wires are and where they are found and also if anyone knows how to take off the steering column cover so i can get to the key cylinder.
wires: 12V Bat in, Second ignition output, Ignition in, starter wire, and key sense out. Thanks for any help.
Ryan
First off here is the wiring diagram for the truck ( the words in BOLD and RED are the IMPPE bypass colors )
| 12V|red |+ |ignition harness | RED 16 g
| STARTER|yellow |+ |ignition harness |VIOLET
| IGNITION|pink |+ |ignition harness |YELLOW
| SECOND IGNITION|white |+ |ignition harness |WHITE 16 G
| ACCESSORY|orange |+ |ignition harness |
| POWER LOCK|lt. blue |+ |brown plug at BCM *1 |
| POWER UNLOCK|white |+ |brown plug at BCM *1 |
| LOCK MOTOR|gray | |drivers kick panel |
| UNLOCK MOTOR|tan | |drivers kick panel |
| DISARM DEFEAT|tan/black | |passengers kick panel |
| PARKING LIGHTS +|brown | |lt. blue plug at BCM *1 |
| PARKING LIGHTS -|white | |lt. blue plug at BCM *1 |
| HEADLIGHTS|white |+ |lt. blue plug at BCM *1 |
| DOOR TRIGGER|*2 |- |BCM *1 |
|FCTRY ALRM DISARM|lt.green |- |drivers kick *4 |
| TACHOMETER|white *5 | |ECM *3 |
| SPEED SENSE|dk.GREEN / WHITE | |ECM *3 |
| BRAKE WIRE|white |+ |brake pedal switch |
| HORN TRIGGER|black |- |brown plug at BCM *1 |
| WIPERS| | | |
| LF WINDOW UP/DN|blue - brown |A |drivers door switch |
| RF WINDOW UP/DN|blue - brown |A |passenger door switch |
| LR WINDOW UP/DN| | | |
| RR WINDOW UP/DN| | | |
BROWN: To (-) when running wire from remote starter
GREEN: Key sense wire is not necessary to install on all vehicles
Notes:
NOTE: This vehicle has the passlock II immobilizer system that, when adding a remote start *1 The BCM is located behind the drivers side of the dash. The plugs on the BCM face towards the rear of the vehicle. The parking lights are in pin A5 and the headlights are in pin A11. *2 Use tan for the drivers door located in pin B4 of the purple plug, and for the passenger door it will be a orange in pin B2 in the purple plug or dk.blue/white in pin B11 of the lt.blue plug, must diode isolate these wires. *3 ECM is located near the battery, down low, between the fender and the fan under the black plastic cover. On the 4.3L, the tach wire is at pin 20 in the connector labeled 'red', and VSS wire is at pin 3 in the connector labeled 'black'. On the 4.8L, 5.3L, and 6.0L, the tach wire is located at pin 10 in the 'red' connector, and VSS wire is located in pin 50 of the 'red' connector. *4 Also found in the purple plug of the BCM. *5 Diesel tach wire is white at the cluster.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
can anyone tell me how to get the steering column cover off to get to the ignition harness?
You actually don't need to remove the steering wheel cover to access the Passlock wires. They run down along side the ignition wires when you remove the lower portion of the driver dash area.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
I am not sure how to get the lower portion off. I took out the lower boltws but hte piece doesn't seem to want to "pop" off.
There may be some screws holding the upper lip of the dash in behind the upper dash portion. That means that you will have to take off the upper portion of the dash to access these screws. I nkow the new Jeeps are like this, so I don't doubt Chevy's are the same way. DO NOT pry too hard, otherwise you may break the plastic and have a loose dash piece 
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA