Brake Controller Installed on 2013 Chevy Avalanche-Now Vehicle Won't Start  

Question:

Helpful Expert Reply:

The brake controller wiring on a 2013 Chevy Avalanche is a bundle of 5 wires located under the dash between the brake and the emergency brake pedals. The wiring harness will have a white label wrapped around it, which should make it easier to locate. A plug in harness like the # 3016-P isn't needed on your Avalanche.

Your brake controller will wire directly to the bare ended wires in this harness, the wire colors will match up as follows:

Red/Black tow package wire connects to Black controller wire
White tow package wire to White brake controller wire
Light Blue/White tow package wire to Red brake controller wire
Dark Blue tow package wire to Blue brake controller wire

The orange wire isn't used.

I've linked you to an FAQ article that exactly describes how to install the brake controller. I hope you'll find it helpful.

expert reply by: Mike L

1

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Dale

1/8/2026

I wired all the wires up under dash black n red to black n white to white n red to light blue then blue to blue still no go.