Whether your an expert GMC Sonoma car alarm installer, GMC Sonoma performance fan or a novice GMC Sonoma enthusiast with a 2002 GMC Sonoma, a 2002 GMC Sonoma car alarm wiring diagram can save yourself a lot of time. One of the most time consuming tasks with installing an after market car alarm, car security, car remote start, automatic remote starter, shock sensor, tilt sensor, car alarm sensor or any auto alarm is identifying the correct color car security wires for a 2002 GMC Sonoma.

The Modified Life staff has taken all its GMC Sonoma car alarm wiring diagrams, GMC Sonoma car security wiring diagrams, GMC Sonoma car alarm wire diagrams, GMC Sonoma car security wiring schematics, GMC Sonoma car security diagrams, GMC Sonoma remote starter wiring diagrams and cataloged them online for our visitors to use for free. Our automotive wiring diagrams allow you to enjoy your new auto security electronics rather than spend countless hours trying to figure out which wires goes where.

Feel free to use any GMC Sonoma auto alarm wiring diagram that is listed on Modified Life but keep in mind that all information here is provided as-is without any warranty of any kind and most of the auto security wiring diagrams listed on our enthusiast website are submitted by the Modified Life community. Use of the wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 2002 GMC Sonoma.

Questions

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2002 GMC Sonoma Car Alarm Wiring Chart

Battery Constant 12v+ Positive Wire (+): Red
Battery Constant 12v+ Positive Wire Location: Ignition Switch Harness

Starter Positive Wire (+): Yellow
Starter Positive Wire Location: Ignition Switch Harness

Second Starter Positive Wire (+): N/A
Second Starter Positive Wire Location: N/A

Ignition Positive Wire (+): Pink
Ignition Positive Wire Location: Ignition Switch Harness

Second Ignition Positive Wire (+): White (This wire must be connected as ignition #2 for remote starting.)
Second Ignition Positive Wire Location: Ignition Switch Harness

Third Ignition Positive Wire (+): N/A
Third Ignition Positive Wire Location: N/A

Accessory Positive Wire (+): Orange
Accessory Positive Wire Location: Ignition Switch Harness

Second Accessory Positive Wire (+): N/A
Second Accessory Positive Wire Location: N/A

Key Sense Wire: N/A
Key Sense Wire Location: N/A

Parking Light Negative Wire (-): White
Parking Light Negative Wire Location: At BCM, Light Blue Plug. The BCM (body control module) is located to the right of the gas pedal just below the radio, the plugs on the BCM face the driver side of the vehicle.

Parking Light Positive Wire (+): Brown
Parking Light Positive Wire Location: At Headlight Switch Or At BCM, Light Blue Plug. The BCM (body control module) is located to the right of the gas pedal just below the radio, the plugs on the BCM face the driver side of the vehicle.

Power Door Lock Positive Wire (+): Light Blue
Power Door Lock Positive Wire Location: At BCM, Brown Plug. The BCM (body control module) is located to the right of the gas pedal just below the radio, the plugs on the BCM face the driver side of the vehicle.

Power Door Unlock Positive Wire (+): White
Power Door Unlock Positive Wire Location: At BCM, Brown Plug. The BCM (body control module) is located to the right of the gas pedal just below the radio, the plugs on the BCM face the driver side of the vehicle.

Door Trigger Negative Wire (-): This vehicle has (2) door trigger wires, the tan (-) at the purple plug, pin b4 is for the driver door, and the orange (-) at the purple plug, pin b2 is for the passenger door. When installing an alarm system use both door trigger wires and diode isolate.
Door Trigger Negative Wire Location: At BCM. The BCM (body control module) is located to the right of the gas pedal just below the radio, the plugs on the BCM face the driver side of the vehicle.

Dome Light Supervision Wire (-): Tan
Dome Light Supervision Wire Location: At BCM, Purple Plug, Pin B4. The BCM (body control module) is located to the right of the gas pedal just below the radio, the plugs on the BCM face the driver side of the vehicle.

Trunk Release Negative Wire (-): N/A
Trunk Release Negative Wire Location: N/A

Sliding Power Door Wire: N/A
Sliding Power Door Wire Location: N/A

Horn Negative Wire (-): Black
Horn Negative Wire Location: At Steering Column Harness

Tachometer Wire Negative Wire (-): White
Tachometer Wire Negative Wire Location: At PCM. The PCM (powertrain control module) is located on the passenger fender. On the 2.2L engine, the white tach wire is in a 80-pin black plug (pin 10) and on the 4.3L engine the tach wire is in a red 32-pin plug (pin 20).

Wait To Start Wire: N/A
Wait To Start Location: N/A

Brake Light Positive Wire (+): White
Brake Light Positive Wire Location: At Steering Column Harness

Factory Alarm Disarm Wire (-): N/A
Factory Alarm Disarm Wire Location: N/A

Factory Anti-Theft System: Yellow (+), Orange/Black (-) And Red/White (Not Used)
Factory Anti-Theft System Location: GM Passlock 2 System, These Wires Exit The Ignition Switch Tumbler Together And Are In The Main Ignition Switch Harness In The Column.

The 2002 GMC Sonoma alarm wire color information above is updated as it is submitted by the Modified Life community.