2006 Cadillac CTS-V Owner's Manual - Page 155

Passenger Compartment Air Filter The passenger compartment air filter traps most of the pollen from the air entering your vehicle. Like your vehicle's engine air cleaner/filter, it needs to be changed periodically. For how often to change the passenger compartment air filter, see Scheduled Maintenance on page 6-4. Using your climate control system without the passenger air filter installed may allow water or other debris to enter the system. This could cause a water leak or noises. Make sure to install a new air filter after removing the old one. Use the procedure listed below to replace the passenger compartment air filter: 1. Turn the ignition to ON with the engine off. 2. Turn on the windshield wipers and turn them off again when the wipers are straight up and down on the windshield. This will allow you access to the leaf screen under which is located the passenger compartment air filter. 3. Open the hood to access the engine compartment. See Hood Release on page 5-11 for more information. 4. Remove the four screws that hold the leaf screen in place and lift off the screen by lifting and sliding toward the center of the vehicle. 5. Pull out on the two tabs located on each end of the filter cover. 6. Lift the filter cover off by pulling it straight upward. 7. Remove the old filter and insert a new one. Make sure the arrow on the filter is pointing toward the passenger compartment. See Normal Maintenance Replacement Parts on page 6-15 for the correct part number for the filter. 8. Reverse Steps 1 through 6 to reinstall the cover. The passenger compartment air filter is located underneath the hood below the windshield wiper arm on the passenger's side of the vehicle. See Engine Compartment Overview on page 5-12 for more information on location. 3-29