99 Gmc Sonoma Wiring Diagram. This manual is specific to a 1999 GMC Sonoma. 1999 GMC Sonoma Pickup car stereo wire colors functions and locations.
Here is the wiring diagram so you can determine why. Car Radio Battery Constant 12v Wire. I Own No Voltmeter.
If you run into an electrical problem with your GMC you may want to take a moment and check a few things out for yourself.
1999 2000 2001 2002. It is very easy to use and support is always free. Gm Blazer Jimmy Typhoon Bravada 1983 1993 Wiring Diagrams Repair Guide Autozone. Image Click to enlarge Was this.