What is the function of the Intake Air Temperature (IAT) sensor and Mass Air Flow Sensor and how to replace?

The Intake Manifold Temperature (IMT) sensor is a thermistor, and it changes its resistance according to the temperature. The change in resistance directly affects the voltage signal supplied by the sensor to the PCM. Resistance values decrease as sensor temperature rises and increase when it falls. The IMT is part of the Mass Air Flow sensor, which measures air quantity entering the engine using a hot-wire sensing element. This wire gets cooled as air moves over it. This thermal variation is converted into an analog voltage signal to PCM that adjusts fuel injector pulse width corresponding with airflow. The MAF/IMT can be found on the intake air duct. To replace it, disconnect the sensor electrical connector, remove the two mounting screws and pull the sensor out from the air intake duct. Installation is simply reversing of removal.

Genuine Chevrolet Colorado Mass Air Flow Sensor

MAF Sensor Meter

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4 Mass Air Flow Sensors found

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Chevrolet Colorado Sensor,Mass Airflow(W/Intake Air Temperature Sensor)
Part Number: 15865791
$70.57 MSRP: $146.54
You Save: $75.97 (52%)
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Product Specifications
- Other Name: SENSOR, Computer Control Sensors
- Replaces: 12576410
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2012 Chevrolet Colorado | CREW CAB, EXTENDED CAB, EXTENDED LENGTH, PICKUP | 4 Cyl 2.9L, 5 Cyl 3.7L, 8 Cyl 5.3L
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Chevrolet Colorado Sensor Assembly, Mass Airflow
Part Number: 23262343
$75.36 MSRP: $156.48
You Save: $81.12 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: SENSOR, Computer Control Sensors
- Replaces: 20787043, 23118170
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015-2021 Chevrolet Colorado | CREW CAB - 5'2" BOX, CREW CAB - 6'2" BOX, CREW CAB LS - 6'2" BOX, CREW CAB LT - 6'2" BOX, EXTENDED CAB - 6'2" BOX, LS CREW CAB - 5'2" BOX, LS EXTENDED CAB - 6'2" BOX, LT CREW CAB - 5'2" BOX, LT EXTENDED CAB - 6'2" BOX | 4 Cyl 2.5L, 6 Cyl 3.6L
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Chevrolet Colorado Sensor Assembly, Mass Airflow
Part Number: 23324767
$83.00 MSRP: $172.36
You Save: $89.36 (52%)
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Product Specifications
- Other Name: Air Mass Sensor, Mass Air Flow Sensor
- Replaces: 22951817
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016-2021 Chevrolet Colorado | CREW CAB - 5'2" BOX, CREW CAB - 6'2" BOX, CREW CAB LS - 6'2" BOX, CREW CAB LT - 6'2" BOX, EXTENDED CAB - 6'2" BOX, LS CREW CAB - 5'2" BOX, LS EXTENDED CAB - 6'2" BOX, LT CREW CAB - 5'2" BOX, LT EXTENDED CAB - 6'2" BOX | 4 Cyl 2.8L Diesel
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Chevrolet Colorado Sensor,Mass Airflow
Part Number: 12579352
$70.52 MSRP: $146.39
You Save: $75.87 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Air Mass Sensor, Mass Air Flow Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2006 Chevrolet Colorado | CREW CAB, EXTENDED CAB, EXTENDED LENGTH, PICKUP | 4 Cyl 2.8L, 5 Cyl 3.5L

Chevrolet Colorado Mass Air Flow Sensor Parts Questions & Experts Answers

Sensor,Mass Airflow
12579352
Q: What is the function of the Intake Air Temperature (IAT) sensor and Mass Air Flow Sensor and how to replace?
A: The Intake Manifold Temperature (IMT) sensor is a thermistor, and it changes its resistance according to the temperature. The change in resistance directly affects the voltage signal supplied by the sensor to the PCM. Resistance values decrease as sensor temperature rises and increase when it falls. The IMT is part of the Mass Air Flow sensor, which measures air quantity entering the engine using a hot-wire sensing element. This wire gets cooled as air moves over it. This thermal variation is converted into an analog voltage signal to PCM that adjusts fuel injector pulse width corresponding with airflow. The MAF/IMT can be found on the intake air duct. To replace it, disconnect the sensor electrical connector, remove the two mounting screws and pull the sensor out from the air intake duct. Installation is simply reversing of removal.