Application: Compatible With 2007-2013 GMC Sierra 1500 / 1500 Denali New Body Style Models w/ Halogen Headlights Only, 2007-2014 GMC Sierra 2500 HD / 3500 HD New Body Style Models w/ Halogen Headlights Only, 2011-2014 GMC Sierra 2500 HD / 3500 HD Denali Models w/ Halogen Headlights Only ( Will Not Fit Models With Factory Projector Or LED Headlights, Hyper Blinking May Occur If Used With Other Branded Aftermarket LED Lighting, CANbus Decoder Is Required If An Error Occurs ( Not Included ) ) Full LED Sequential Projector Headlights Full LED Design With Sequential LED Signal Pattern, 3 Separate Projector LED Lamps For Low Beam Per Each Side Of The Headlight, Sequential LED Signal Pattern, New Technology Signature LED Light Bar, Dynamic LED High Beam, LED Lamps Provide Brighter Beam While Using Less Energy & Last Longer Attention: These LED Projector Headlights Will ONLY Replace Factory OEM Halogen Style Headlights, Not Compatible With Factory Upgraded Projectors Or LED Headlights, Hyper Blinking May Occur If Used With Other Branded Aftermarket LED Lighting. For More Information Please Contact Us DOT / SAE Compliant Stehlen Headlights. Stehlen Brand Has A Great Reputation Of Producing Guarantee Quality, Reliable & Best Looking Products. Our Headlights Are Custom Designed To Fit Your Specific Application. They Are Designed To Perfection For The Style Or Features You Decide To Choose From. We Made Sure That Safety Comes First Because They Can Help Us Illuminate The Road And Protects Us From Hazardous Road Contitions. The Quality & Efficiency Of The Headlights Provide Customers Confidence & Not To Be Worry About The Lights Burning Out Or Consuming Too Much Energy. Not Only Does Our Headlights Provide Safety, Efficiency & Quality, They Also Bring Out The "Eye-Catching" Appearance For Your Vehicle.