ACDelco Ambient Light Sensor
ACDelco Ambient Light Sensors: OE Precision for GM Vehicles
When your vehicle's automatic headlamp or interior display dimming system starts behaving erratically — headlights staying on in broad daylight, or instrument cluster brightness that never adjusts — the culprit is often a worn or failing ambient light sensor. ACDelco, as the premier supplier of GM Original Equipment replacement parts, offers ambient light sensors engineered to restore your vehicle's lighting automation to factory-correct operation.
What ACDelco Ambient Light Sensors Do
An ACDelco ambient light sensor measures the amount of ambient light available to the driver so that vehicle displays can adjust their brightness settings automatically. It helps conserve energy and enhances the visual quality of electronic devices. On a practical level, this means your automatic headlamps engage when you enter a tunnel or when dusk falls, and your instrument panel dims at night without any manual input — exactly as your vehicle was designed to behave.
The sensor detects changes in ambient light conditions and automatically adjusts the interior and exterior lights accordingly, enhancing driving safety by ensuring that headlights turn on when visibility is low. Common symptoms of a failing sensor include headlights not activating in low light conditions, inconsistent lighting adjustments in the interior or exterior, and dashboard warning lights related to lighting system malfunction.
Why Choose ACDelco for This Repair?
An ACDelco GM Original Equipment ambient light sensor is a GM-recommended replacement for your vehicle's original component, manufactured to fit your GM vehicle and providing the same performance, durability, and service life you expect from General Motors. Because these sensors are designed, engineered, tested, and backed by General Motors, they work precisely and fit perfectly.
ACDelco backs these parts with a 24-Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. That warranty coverage reflects the same confidence General Motors places in every sensor that leaves the production line.
Vehicle Compatibility
The ACDelco ambient light sensor is a must-have for Buick, Cadillac, Chevrolet, and GMC owners who desire maximum control over their vehicle's lighting. This part fits many popular platforms such as Buick Enclave, Chevrolet Traverse, and Pontiac G6. Multiple part numbers — including 13498957, 13498958, and 12450120 — cover a broad range of model years and body styles across the GM family, so you can find the right sensor for your specific application.
GM OE Quality You Can Trust
ACDelco is the premier supplier of GM Original Equipment automotive replacement parts, as well as a trusted provider of premium aftermarket parts for most other makes and models. ACDelco offers nearly 90,000 auto parts across 37 product lines, available globally. Whether you are a DIY enthusiast or a professional technician, replacing the ambient light sensor with an ACDelco unit means you are installing the same grade of component your vehicle was built with — no guesswork, no fitment worries.
Browse the full selection of ambient light sensors to find the correct ACDelco part number for your vehicle, and explore the complete ACDelco parts catalog for everything from electrical sensors to filters, brakes, and beyond.