My 4WD would not start until we replaced my old transfer case switch with this 49315 Dorman. Now it works like clockwork. I feel safe on our snowy and broken roads. The price is okay compared to the OEM counterpart. The Dorman 49315 is backed by a Limited Lifetime Warranty. You can't go wrong with this product. 5 stars, highly recommended! Dorman HELP! 49315 Transfer Case Switch