Skip to main content
This step-by-step guide provides instructions on how to change the Mass Air Flow (MAF) sensor on Cadillac vehicles.

Changing the mass airflow sensor on a Cadillac is very easy and takes less than 30 minutes.

Table of Contents


  • Cadillac is hard to start or has trouble turning over
  • Engine stalls soon after starting.
  • The engine runs unusually lean or rich idling.
  • Cadillac engine drags or hesitates when idle or under load.
  • Cadillac hesitates and jerks during acceleration.
  • Cadillac engine hiccups.
  • Check Engine Light stays ON

What you will need


  1. Park the Cadillac, turn off the ignition, set the parking brakes, and allow for the engine to cool down. 
  2. Open the hood. Pull the hood release, which is located under the dashboard on the driver's side.
    Your browser does not support the video tag.
  3. Locate the mass airflow sensor next to the air filter housing.locaiton of mass air flow senosr on Cadillac  ATS, CTS, XTS, CT6, XT5, Escalade, SRX, DTS, STS, BLS, XLR
  4. Unplug the electrical connector from your Cadillac MAF sensor. Press on the tab to unclip the connector, then pull the connector away from the MAF.cadillac maf sensor replacement diy
  5. Remove the two screws that secure the MAF sensor to the air inlet pipe.  
  6. Replace vehicle MAF Sensor from the vehicle.
  7. Install the new Cadillac MAF sensor. Tight the screws so that they are snug.  
  8. Plugin the electrical connector until it locks in place.  
  9. Start the vehicle and let it idle. 

The check engine light will not reset immediately, and it may take up to a week to reset. If you want to erase the check engine light immediately, use an OBD-II scanner to read and clear the codes. 

This guide will help owners of Cadillac ATS, CTS, XTS, CT6, XT5, Escalade, SRX, DTS, STS, BLS, XLR learn how to change MAF sensors.

The typical cost to change a Cadillac mass airflow sensor at the dealer or mechanic costs between $250-$500.

Changing the Cadillac MAF sensor yourself typically costs under $100 when purchasing the MAF sensor online; see the link below. MAF sensor is located near the air filter housing as shown in the following pictures and is quite easy to change.