Your vehicle deserves only genuine OEM GM parts and accessories. To ensure reliability, purchase GM part # 23190042 Switch Assembly, Dimmer *Black. It is sometimes referred to as GM Dimmer Switch, GM Headlight Switch. Our GM parts and accessories are expedited directly from authorized GM dealers strategically located all across the U.S. and are backed by the manufacturer's 12 month, 12,000 mile warranty. OEM GM parts are the best for restoring your vehicle to factory condition performance. This part fits specific Cadillac ATS models.
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