Here is what Audiovox lists:
#510396: 2007 CHEVROLET VAN VAN
Audio/Mobile Video
WIRE COLOR POLARITY LOCATION
Battery RED / WHITE (+) RADIO HARNESS
Accesory ORANGE (DATA) RADIO HARNESS
THIS WIRE IS A CLASS-2 DATA WIRE - DO NOT USE AS AN ACCESSORY TURN-ON.
Ground BLACK/ WHITE (-) RADIO HARNESS
LF Speaker (+) DARK BLUE
LF Speaker (-) LIGHT BLUE
RF Speaker (+) ORANGE
RF Speaker (-) DARK GREEN
LR Speaker (+) TAN
LR Speaker (-) WHITE
RR Speaker (+) TAN
RR Speaker (-) ORANGE
Steering Cntrls NO
THIS VEHICLE MAY BE EQUIPPED WITH OPTIONAL ONSTAR® TELEMATICS EQUIPMENT. USE AN APPROPRIATE INTEGRATION HARNESS OR INSTALLATION PROCEDURE TO ENSURE PROPER FUNCTION OF THIS EQUIPMENT.
Speed Cntrl OPTIONAL
Radio Security YES
Security
WIRE COLOR POLARITY LOCATION
Battery RED / BLACK (+) IGNITION SWITCH HARNESS
Ignition 1 PINK (+) IGNITION SWITCH HARNESS
Starter 1 YELLOW (+) IGNITION SWITCH HARNESS
All Door Trigger DK. BLUE/WHITE (+) BCM LT. BLUE CONN. PIN B9
LF Latch TAN (+) BCM LT. BLUE CONN. PIN B4
RF Latch LT. GREEN (+) BCM LT. BLUE CONN. PIN A5
Trunk Trigger LT. GREEN (+) BCM LT. BLUE CONN. PIN A5
Parking Lights WHITE (-) BCM GREY CONN. PIN B2
OR BROWN / WHITE (+) AT SWITCH
Convenience
WIRE COLOR POLARITY LOCATION
Please select another category
Remote Start
WIRE COLOR POLARITY LOCATION
Battery RED / BLACK (+) IGNITION SWITCH HARNESS
Ignition 1 PINK (+) IGNITION SWITCH HARNESS
Ignition 2 WHITE (+) IGNITION SWITCH HARNESS
Accessory 1 BROWN (+) IGNITION SWITCH HARNESS
Accessory 2 ORANGE (+) IGNITION SWITCH HARNESS
Starter 1 YELLOW (+) IGNITION SWITCH HARNESS
Anti-Theft Type GM PASSLOCK II® ANTI-THEFT SYSTEM
Anti-Theft Descript THE BCM MODULE MUST SEE A SPECIFIC RESISTANCE VALUE BEFORE THE VEHICLE WILL START PROPERLY
Key Sense LIGHT GREEN (-) IGNITION SWITCH HARNESS
Tachometer WHITE (-) IN BLACK PLUG NEAR DRIVERS SHOCK TOWER
Speed Sense YELLOW/BLACK (AC) PCM GREEN PLUG PIN 49
Parking Lights WHITE (-) BCM GREY CONN. PIN B2
OR BROWN / WHITE (+) AT SWITCH
Brake Lights WHITE (+) BRAKE SWITCH
Horn TAN (-) BCM GREY PLUG B9
Modules
WIRE LOCATION
Module 1 BCM-LOWER RIGHT SIDE OF THE I/P
Module 2 ECM-AT THE LEFT FRONT SIDE OF THE ENGINE COMPARTMENT, NEAR THE UNDERHOOD FUSE BLOCK
Module 3 PCM-IN THE ENGINE COMPARTMENT, ATTACHED TO THE LF FENDER
Doorlocks/Windows
WIRE COLOR POLARITY LOCATION
Power Unlock WHITE (+) BCM LT. BLUE PLUG PIN B10
PowerLock LIGHT BLUE (+) BCM LT. BLUE PLUG PIN B5
Driver Mtr Unlock TAN (REV) DRIVER'S KICK PANEL
Driver Mtr Lock GREY (REV) DRIVER'S KICK PANEL
Pas Mtr Unlock TAN (REV) PASSENGER'S KICK PANEL
Note: Audiovox makes no representation or warranty with respect to the above information including its accuracy, completeness, or its freedom from third parties' proprietary rights. Audiovox disclaims all liability or responsibility for errors or omissions therein or any decision made by the recipient in reliance thereon. The installer must verify any circuitry with the proper test equipment prior to installation.