SERVICE: If there are any quality problems with the product, we will provide a refund or exchange service FUNCTION & APPLICATION: A manifold absolute pressure sensor (MAP) sensor monitors the changes in the intake manifold or vacuum pressure during various engine operating loads and sends a corresponding signal to the ECU COMPATIBLE VEHICLES: Replacement for 1985-2004 Chevy Impala, 1988-1998 Chevy Silverado K1500, 1984-2003 Buick Century, 1992-1997 GMC Yukon, 1987-1995 Jeep Wrangler, 1999-2003 Oldsmobile Alero - most GM vehicles. To find more detailed vehicle model information, please check the pictures below OEM NUMBER: 12569240, 1580380, 16017460, 16137039, 16158055, 16254719, 17112715, 21020103, 2131545, 213185, 213187, 213356, 216450, 219060, 219325, 21961, 33000153, 33000273, 33004212, 35178920, 4723039, 8125692400, 8160174600, 8161370390, 8161580550, 8933000153, SU105, 9389131, 5S2397, 213-185, 213-1545, 1984-0004, AS17, AS5, AS61, AS165, PS10075, GEGT7610-17. Please enter your vehicle information in the top left corner of the listing before ordering FEATURES & QUALITY: Our MAP sensor has high reliability and stability, improves accuracy under high temperature conditions, response time is less than 2 milliseconds, and maximum error between 0 and 85 is 3%