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Chevy Mass Air Flow (MAF) Sensor Replacement Guide

This guide will tackle Chevy Mass Air Flow (MAF) sensor problems, common symptoms, and how to replace the MAF sensor on a Chevy. 

The engine control unit uses data from the MAF sensor to calculate the correct mixture of air and fuel that the engine needs.

Chevy Mass Air Flow (MAF) Sensor Replacement Guide
DIY COST $30-$50


Location of the MAF Sensor on a Chevy Camaro
Location of the MAF Sensor on a Chevy Camaro

A Chevy MAF sensor is located right next to the engine air filter housing. It can get dirty and fail over time. 


Symptoms of bad maf sensor chevy chevrolet

Symptoms that you may notice when your MAF sensor fails: 

  • Check engine light on
  • The car is hard to start or has trouble turning over.
  • Engine stalls soon after starting.
  • The engine runs lean or rich.
  • Engine drags or hesitates when idle or under load.
  • Engines RPMs fluctuate
  • Poor MPG

How to Replace Chevy MAF Sensor

Changing the mass airflow sensor on a Chevrolet is very easy and takes less than 30 minutes.  MAF sensor is located near the air filter housing, as shown in the following picture.

What you will need


  1. Open the hood of your Chevrolet. The hood release is located under the dashboard on the driver's side.Open hood to replace the maf sensor


  2. Locate the mass airflow sensor near the engine air filter housing. 

    Location of MAF sensor on Chevy

    locaiton of mass air flow senosr on Chevrolet  Spark, Sonic, Bolt, Volt, Cruze, Malibu, Impala, Camaro, Corvette, City Express, Trax, Equinox, Traverse, Tahoe, Suburban, Colorado, Silverado, Sonic, Blazer, Astro, HHR, Uplander, Avalanche etc.

  3. Press the red clip slightly to unlock it. Unplug the electrical connector from the mass airflow sensor.

    maf sensor connector


  4. Remove the screws that hold the mass airflow sensor in place. Remove the sensor. 
  5. Install the new MAF on your Chevrolet. Tighten the screws so that they are snug. Plug the electrical connector until it locks in place.

The check engine light will require a few days of driving to reset on its own. Or you can use an OBD-II scanner to reset the check engine light as long as there aren't any other fault codes present. 

This guide will help owners of the following Chevrolets. Learn how easy it is to change MAF sensor.

  • Spark
  • Sonic
  • Bolt
  • Volt
  • Cruze
  • Malibu
  • Impala
  • Camaro,
  • Corvette
  • City Express
  • Trax
  • Equinox
  • Traverse
  • Tahoe
  • Suburban
  • Colorado
  • Silverado
  • Sonic
  • Blazer
  • Astro
  • HHR
  • Uplander
  • Avalanche



Putting in a new MAF will do absolutely nothing to the transmission but help your car run better. Tell them to get bent.


I was told that my MAF sensor was contaminated and it needs to be clean (decontaminated) the part will cost $16.86 and the labor is $100.00. The mechanic advised that this needs to completed ASAP. I told him I can not afford the service right now and he told me that this may cause me to loose my warrantee coverage on my transmission? This sounds kind of fishy, labor at 100.00 dollars??


100$ is a little high for a 10 min job but hey they have shop overhead cost. You can change it yourself though, it is very simple. As far as you loosing the transmission warranty, that I am not sure about.

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