Mass Air Flow (MAF) Sensor with Intake Air Temperature (IAT) Sensor

The GM 15865791 is a genuine GM Mass Airflow (MAF) sensor that also incorporates an Intake Air Temperature (IAT) sensor, serving as a direct replacement for part number 12576410. This sensor is crucial for engine management, as it measures the volume and density of air entering the engine. This data is then used by the vehicle's Powertrain Control Module (PCM) to calculate the correct amount of fuel to inject, ensuring efficient combustion and optimal performance. This MAF/IAT sensor is a new OEM unit manufactured by General Motors to meet strict specifications for fit, form, and function. It replaces the original sensor and is guaranteed by GM's factory warranty. The sensor dimensions are 4.5 x 4.2 x 1.4 inches and it weighs 0.40 pounds. Installation typically involves disconnecting the electrical connector, removing mounting fasteners, and extracting the sensor from the air filter housing duct. The process is generally the reverse of removal. Specific instructions are available for various GM models, including Chevrolet Camaro, Corvette, Colorado, Cobalt, and Pontiac G6, detailing how to disconnect the sensor and its electrical connector, and remove mounting screws. For some models, access may require removing the fender well liner. This sensor is compatible with a wide range of GM vehicles from 2005 to 2019, including various Buick, Cadillac, Chevrolet, and GMC models. Specific fitment details are provided for models such as the Buick Allure, LaCrosse, Rainier, and Regal, as well as Cadillac ATS, CT6, CTS, SRX, STS, and XLR, often specifying engine sizes and body styles like 4-door sedans or coupes.