Walker Products Manifold absolute pressure sensors (MAP Sensor) measure manifold pressures through changing voltage and sends this information to the onboard computer. The computer uses this and other inputs to calculate the correct amount of fuel delivered. Symptoms of failure include poor starting, detonation, a check engine light, and or no start conditions. Sensors are non-serviceable and therefore must be replaced when non-functional. Walker Products began supplying the fuel system and engine management needs of the automotive industry since 1946. We continue our commitment to supplying products manufactured to meet or exceed OEM standards and specifications with the highest quality products. Fitment: Fitment: Chevrolet Colorado 2018-2016 Chevrolet Express 2500 2018-2017 Chevrolet Express 3500 2018-2017 GMC Canyon 2018-2016 GMC Savana 2500 2018-2017 GMC Savana 3500 2018-2017 Jaguar E-Pace 2019-2018 Jaguar F-Pace 2019-2018