Choose the ultimate safety feature of an auto-dimming Avalanche rearview mirror with a high tech design that calculates the amount of reflection in your rearview mirror and adjusts to keep dangerous, blinding light out of your eyes. Never again will you have to take your eyes off the road to flip your mirror back and forth. And, you stay safer with less eyestrain and driver fatigue when you're not fighting off blinding glare. Plus, this Avalanche rear view mirror comes with a 3-year, 36,000-mile guarantee! With free shipping, our AutoAnything 1-year lower price guarantee and premium warranties, this is a deal that couldn't be sweeter!