When the headlight dimmer switch malfunctions there’s a chance of blowing the 10 amp illumination fuse. I will include an image of the wiring diagram below so that you can do some power testing. Headlamp Dimmer Switch Electrical DiagramĪs I explained in my strategy-based electrical diagnoses article, the possibility of running into a different problem always exists. These use an updated switch (available below) that develops the same problem as the older model trucks. Nevertheless, were starting to see the same complaints on the newer trucks that run from 2007 through 2013. Chevrolet Silverado, Suburban and Tahoe trucks and SUV from 1999 all the way through 2006 use the same headlamp dimmer switch. Also note, the back lighting on the heater and AC control panel exhibits the same symptoms. In some cases, operating the wheel of the dimmer switch gets the lights working for a short period of time. Drivers also reported that the back-lighting flickers over bumps or goes out when you attempt to move the dimmer switch up or down. The other dash warning lights and the backlight for the shift indicator work normally. With that said, drivers often complain about the lighting for the instrument panel providing intermittent operation well in advance of complete failure. In some cases the GM dash lights broken issue leaves you with no backlight behind the instrument cluster. Symptoms of a Defective Headlight Dimmer Switch In fact, when demand becomes so strong, that Amazon gets in the game of supplying replacement switches, consumers benefit. With so many GM dash lights broken the demand for replacement headlight dimmer switch parts drove the prices down. However, when you add the sport-utility vehicles like the Suburban, Yukon and Tahoe the number of automobiles experiencing dash light problems becomes a mind blowing number. Some of Chevrolet's top-selling vehicles during this time period include the Chevy Silverado and GMC Sierra pickup trucks. It's not often that you find the same problem happening on 14 years worth of vehicles. In addition, review common symptoms of a failing dimmer switch and other common problems. Here we'll talk about what it takes and how much it costs to fix this problem. When you find GM dash lights broken in 1999 through 2013 Chevrolet and GMC trucks you probably have a defective headlight dimmer switch.
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