Where is the mass air flow sensor located on a 2005 chevy trailblazer 4.2 engine?
On a 2005 Chevy Trailblazer with the 4.2L engine, the Mass Airflow Sensor (MAF) is located in the air intake tube, between the air filter housing and the throttle body. It's a fairly straightforward location; you'll see a relatively small sensor with a wire harness plugged into it, usually near the throttle body. You might need to remove the air filter housing for better access.