Dorman 901-142 Headlight Switch

Reliable Headlight Switch for Select GM Trucks and SUVs

The Dorman 901-142 headlight switch is designed to provide consistent and precise control over your vehicle's lighting system. Engineered for compatibility with various Cadillac, Chevrolet, GMC, and Hummer models, this switch ensures proper operation of headlights, park lamps, and interior lighting functions.

• 12-volt rotary headlight switch with 4 switch positions
• Black plastic knob included for easy operation
• Center mounting position with clip mounting type
• Illuminated switch for visibility in low light conditions
• Compatible with multiple lighting functions including auto, dimmer, DRL, headlamp, park lamp, and interior lamp defeat
• 14 male terminals with one female connector for secure electrical connections
• Durable plastic housing designed for automotive environments

Detailed Product Description

The Dorman 901-142 headlight switch features a rotary design with four distinct positions, allowing drivers to control various lighting functions such as automatic headlights, dimmer settings, daytime running lights (DRL), park lamps, and interior lamp defeat. The switch operates on a 12-volt system and includes a black plastic knob that is both durable and ergonomically designed for smooth rotation. Its center mounting position and clip mounting type facilitate straightforward installation in compatible vehicles.

With 14 male terminals and a single female connector, this switch ensures reliable electrical connectivity without the need for attached lead wires or wiring harnesses. The illuminated feature enhances visibility during nighttime driving or low-light conditions, improving user experience and safety. The plastic housing provides resistance to wear and environmental factors common in automotive applications.

Compatible Vehicles and Applications

• Cadillac Escalade, Escalade ESV, Escalade EXT
• Chevrolet Avalanche 1500, Avalanche 2500, Silverado 1500, Silverado 2500, Silverado 3500, Suburban 1500, Suburban 2500, Tahoe
• GMC Sierra 1500, Sierra 2500, Sierra 3500, Yukon, Yukon XL 1500, Yukon XL 2500
• Hummer H2

This headlight switch is specifically designed for use in these models, ensuring proper fitment and function.

Common Issues Addressed by This Headlight Switch

• Intermittent or non-functioning headlights
• Failure of park lamps or daytime running lights to activate
• Inoperative interior lamp defeat function
• Malfunctioning automatic headlight control
• Damaged or worn rotary switch knob

Installation Notes and Tips

Installation requires removal of the existing headlight switch from the center mounting position. The clip mounting type allows for secure attachment without additional hardware. Ensure the vehicle's battery is disconnected before installation to prevent electrical shorts. Verify terminal connections match the original switch to maintain proper function. No wiring harness or mounting hardware is included, so retain original components for reinstallation.

Quality Assurance and Warranty

Dorman manufactures this headlight switch to meet or exceed OEM specifications for fit, form, and function. The switch is constructed with durable plastic housing and terminals designed for long-term reliability in automotive environments. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in material and workmanship.