Whether you’re a novice GMC Sonoma enthusiast, an expert GMC Sonoma mobile electronics installer or a GMC Sonoma fan with a 2003 GMC Sonoma, a remote start wiring diagram can save yourself a lot of time. The automotive wiring harness in a 2003 GMC Sonoma is becoming increasing more complicated and more difficult to identify due to the installation of more advanced automotive electrical wiring. One of the most difficult jobs is figuring out where wiring for remote start, remote starter, remote vehicle starter, remote car starter, remote auto starter, remote automotive starter, remote auto starter or remote start module should be connected to on your 2003 GMC Sonoma.
The Modified Life staff has taken every 2003 GMC Sonoma remote start wiring diagram, 2003 GMC Sonoma remote start wireing diagram, 2003 GMC Sonoma remote starter wiring diagram, 2003 GMC Sonoma remote starter diagram, 2003 GMC Sonoma wiring for remote start, 2003 GMC Sonoma remote start wire diagram, 2003 GMC Sonoma remote starter wiring diagram, 2003 GMC Sonoma remote start install diagram and cataloged them online for use by our visitors for free. Our remote start wiring schematics allow you to enjoy remote car starting for an air conditioned cabin in the summer and remote vehicle starting for a warm interior in the winter. Stop spending countless hours trying to figure out which remote start wires go to which 2003 GMC Sonoma electrical module or automotive harness.
Feel free to use any GMC Sonoma remote start wiring diagram that is listed on Modified Life but keep in mind that all the information here is provided “as is” without any warranty of any kind and most of the remote start wiring schematics listed on our enthusiast website are submitted by the Modified Life community. Use of the GMC Sonoma wiring diagram is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 2003 GMC Sonoma.
If you have any questions pertaining to the remote starter wiring in the 2003 GMC Sonoma, please feel free to post it at the bottom of this page and either we’ll do our best to find you the information you need or hopefully someone in the Modified Life community will have the information you’re looking for.
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2003 GMC Sonoma Remote Start Wiring Diagram
Vehicle Battery Positive Wire (+): Red
Vehicle Battery Positive Wire Location: Ignition Switch Harness
Vehicle Ignition Wire (+): Pink
Vehicle Ignition Wire Location: Ignition Switch Harness
Vehicle Second Ignition Wire (+): Orange
Vehicle Second Ignition Wire Location: Ignition Switch Harness
Vehicle Accessory Wire (+): Brown
Vehicle Accessory Wire Location: Ignition Switch Harness
Vehicle Second Accessory Wire (+): N/A
Vehicle Second Accessory Wire Location: N/A
Automobile Engine Starter Wire (+): Yellow
Automobile Engine Starter Wire Location: Ignition Switch Harness
Automobile Second Engine Starter Wire (-): N/A
Automobile Second Engine Starter Wire Location: N/A
Factory Anti-Theft System: GM Passlock II Vehicle Immobilizer
Factory Anti-Theft System Type: The Key Sends a RF Signal to the BCM Module
Car Key Sense Wire (-): Light Green
Car Key Sense Wire Location: Ignition Switch Harness
Car Neutral Safety Wire (+): N/A
Car Neutral Safety Wire Location: N/A
Car Tachometer Wire (-): White
Car Tachometer Wire Location: At Ignition Coil
Car Speed Sense Wire: Green/White
Car Speed Sense Wire Location: In Harness on Passenger Side of the Engine Compartment
Car Parking Lights Wire (+): Brown
Car Parking Lights Wire Location: At Vehicle Light Switch
Car Brake Lights Wire (+): Light Blue
Car Brake Lights Wire Location: At Switch Above Brake Pedal
Car Reverse Lights Wire (+): Light Green
Car Reverse Lights Wire Location: Reverse Light Harness
Car Horn Wire (-): Black
Car Horn Wire Location: In Brown Plug at BCM Module
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