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The Chevrolet Cruze is a compact car made by the Chevrolet division of General Motors. The Cruze was first released in 2008 with a front-engine, front-wheel-drive layout.

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My brake lights only work when the car is off not when running the thi

Okay so my brake lights are not working when the car is running only when the car is off third brake light does work when the car is running but that is it and I also get turn signals and reverse lights only my brake lights I went through and checked all my fuses cannot find any blown I have no clue what is going on can anybody help

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Has anyone figured this out? Cuz my truck is doing the same


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Hi @yingertony2 ,

I don’t know the answer but perhaps there may be a problem with the BCM (body control module) or perhaps the brake pedal switch or the wiring between the two.

Here’s an image from the wiring section of the 2013 Cruze repair manual showing the wiring (or part thereof) of the brake light circuit.

Block Image

(click on image to enlarge for better viewing)

The red, blue and green arrows show the brake apply supply voltage (red), the brake apply sense signal (blue) and the low reference (green) wires between the brake pedal switch and the BCM.

The yellow arrow is the supply voltage to the Right rear stop lamp from the BCM.

The black arrow is the supply voltage to the left rear stop lamp from the BCM. .

The orange arrow is the supply voltage to the centre mount stop light from the BCM.

Can only suggest that you check the voltages from the BCM on the various leads to the brake switch and the stop lamps with the engine running and the engine off and with the brake pedal applied and normal to see if there is anything obviously different.

Hopefully this is a start and is of some help.

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