Download 2003-2004 Hummer H2 Cabin Air Filter Installation Guide CAUTION Ensure ignition switch is OFF before attempting to change the Cabin Air Filter! INSTRUCTIONS:* 1. Locate the knee bolster beneath the Glove box. 2. Remove the two retainers holding the kick plate cover. 3. Push the hush panel down exposing the door to the cabin air filter access panel. 4. Unclip and swing the door to the right. 5. Remove the used cabin air filter by pulling it straight down. 6. Install your new Pentius cabin air filters. 7. Replace all components in the reverse order of removal. * Note that Cabin Air filter replacement instructions may be representative for certain vehicles.