The GM LT4 TMAP sensor 25203651 is engineered to accurately measure both manifold absolute pressure and intake air temperature in supercharged LT engine applications. This dual-function sensor provides critical data to the engine control system, allowing precise control of fueling, ignition timing, and boost management under varying load and temperature conditions. A faulty TMAP sensor can result in drivability issues, reduced performance, improper boost control, or check engine lights. Designed as a direct replacement, this sensor restores proper signal accuracy and reliable engine operation in high-performance supercharged LT platforms.