A damaged intake manifold is a serious problem that can lead to expensive repairs. Symptoms such as vacuum leaks, coolant leaks can lead to all sorts of problems such as misfires to overheating. Replacing them along with new gaskets help to ensure proper engine running conditions. Replace For Chevy: 96-05 Astro, Blazer, Express 2500 96-98 C1500, K1500 Pickup 96-07 Express 1500 96-99 P30 96-04 S10 Pickup 99-06 Silverado 1500 2007 Silverado 1500 Classic For GMC : 96-98 C1500, K1500 Pickup 96-05 Jimmy, Safari, Savana 2500 96-99 P3500 96-07 Savana 1500 96-06 Sierra 1500 2007 Sierra 1500 Classic 96-04 Sonoma 96-01 Oldsmobile Bravada Fits 4. 3L V6 Engines