This Manifold Absolute Pressure (MAP) sensor is a professional replacement for GM vehicles. As an important component of the engine control system, it monitors intake vacuum to help optimize fuel delivery for smooth, responsive acceleration. Designed to directly replace the factory sensor, it ensures a precise fit and plug-and-play installation without any modification. The sensor reads intake manifold pressure to calculate air density entering the engine, allowing the computer to adjust fuel mixture for changing conditions. Constructed of durable materials to withstand under-hood temperatures, it provides accurate vacuum readings trip after trip. Backed by a one-year warranty, this MAP sensor keeps your GM vehicle performing at its best. For Chevrolet YEAR BRAND MODEL 2011 Cadillac DTS 2009 Buick Lucerne 2009 Cadillac DTS 2009 Cadillac SRX 2009 Cadillac STS 2009 Cadillac XLR 2008 Chevrolet Silverado 1500 2008 Chevrolet Silverado 3500 HD 2008 Chevrolet Tahoe 2008 Chevrolet Trailblazer 2008 GMC Sierra 1500 2008 GMC Yukon XL 1500 2008 GMC Yukon XL 1500 2007 Chevrolet Cobalt 2007 Chevrolet Express 1500 2007 Chevrolet Silverado 1500 2007 Chevrolet Silverado 2500 HD 2007 Chevrolet Silverado 3500