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Posts Tagged: brake lights don’t work

Brake lights don’t work

Brake lights don’t work Diagnose brake lights don’t work If your brake lights don’t work, the problem can be as simple as burned-out bulbs, a fuse, a bad or misadjusted brake light switch, a bad body control module, or a bad ground. Here’s how to diagnose the system. Brake light switch wiring diagram Every car maker wires their brake light switch and lights a bit differently, but this diagram is fairly common. In older cars, the brake light switch directly switches power to the brake lights. But in late model … Read More

Headlights don’t work

My headlights don’t work I see the “My headlights don’t work” question on auto forums every day. The forum posts always leave out critical information like year, make, model, as if every vehicle is wired the same way. I encourage you to click on the wiring diagram jpg below to open up a PDF of wiring diagrams. I show three ways carmaker use to control headlights. But there are at least six other ways to do it. So if your headlights don’t work, whether the brake lights don’t come on, … Read More

Brake lights don’t work

My brake lights don’t work and won’t shift out of park GM has issued a technical service bulletin #08-05-22-009B to address an issue of intermittent brake light operation (Brake lights don’t work), won’t shift out of park, cruise control doesn’t work, trouble codes C0131, C0161, or C0277. The TSB applies to the following vehicles: 2004-07 Chevrolet Malibu, Malibu Maxx 2008 Chevrolet Malibu Classic 2005-09 Pontiac G6 2007-09 Saturn Aura Since the brake switch is involved in all of these symptoms, you may be tempted to replace it. Even after replacing … Read More

No brake lights

Why don’t my brake lights work Some owners complain of no brake lights in their early 2000 model GM vehicles. The high mount stop light works, but not the brake lights. In addition, the hazard lights may work on the front but not the rear. Also, the rear parking lights work, just not the rear brake lights or hazards. Here’s how the system works. Power flows to the rear brake lights from the 15A brake fuse located in the right hand instrument panel fuse box. So check the fuse first. … Read More

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