How to Inspect the Engine Air Cleaner/Filter
To inspect the air cleaner/filter, remove the filter from the vehicle and lightly shake the filter to release loose dust and dirt. If the filter remains covered with dirt, a new filter is required.
To inspect or replace the engine air cleaner/filter:
1. Turn the ignition off.

2. Remove the side cover by pulling up on the front of the cover.

3. Disconnect the electrical connector from the air box.
4. Loosen the screw on the clamp holding the air outlet duct in place. Do not remove the clamp.
Move the duct aside.
5. Remove the hose from the air cleaner housing mounting arm.
Move the hose aside.

6. Remove the three air cleaner housing cover screws.

7. Move the air cleaner housing cover and remove the cover from the air cleaner housing.

8. Remove the air cleaner filter from the air cleaner housing.
See also:
Engine Compartment
Fuse Block
(CTS Coupe and Sedan)
The underhood fuse block is
located on the left side of the engine
compartment.
Lift the fuse block cover to access
the fuses.
The vehicle may not be equipped
with all of the fuses and rel ...
Towing the Vehicle From the Rear
Notice: Towing the vehicle from the rear could damage it. Also, repairs
would not be covered by the vehicle warranty. Never have the vehicle towed from
the rear. ...
Programming Transmitters to the Vehicle
Only RKE transmitters programmed
to the vehicle will work. If a
transmitter is lost or stolen, a
replacement can be purchased and
programmed through your dealer.
When the replacement transmit ...






