This is the ac compressor for GM trucks and vans from 1999-2002. This product will fir the Chevrolet and GMC savanna 1500, 2500, and the 3500. This product also fits the 2002 GMC sierra 2500 and Silverado 2500 with the 6.6L Duramax. This product will also work with the 1996-2006 Chevy Blazer the GMC Jimmy Hummer H1 and this product fits the GMC C6500 Topkick with the 8.1 or 6.6 and the Chevy Kodiak.