at end of hose coming from throttle body,or carb.
in the air pipe from the air filter box to the engine
No.
its in the air hose between the air filter and air box.
There is no cabin air filter on the 2003 Chevy avalanche
It didn't come with a cabin filter when it left the factory. Look behind the glove compartment door, some say there is a place for one.
this is NOT the mass air flow sensor but this is a 20 second fix, it is located on the tube between the air filter box and engine on the firewall side of the tube
Fram # PH9018
The Chevy colorados do not come equipped with a cabin air filter
The Chevy Cavalier does have a fresh air intake filter. The fresh air intake filter is located behind the passenger side kick plate.
In the air filter box
The cabin air filter on a 2003 Chevy 2500HD is located inside the car. It is in the HVAC housing under the passenger side dash.
The 2001 Chevrolet Blazer doesn't have a cabin filter.