How to Replace a Cabin Air Filter on a 2005 GMC

by Tonya Cunningham
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The cabin air filter in a 2005 GMC is responsible for keeping the ventilation system free of harmful air contaminants and particles. A dirty air filter is not able to effectively protect the air system from dangerous fumes. When the air filter is clogged with dirt and build-up, air cannot flow freely through the vents. If it has been a year or more since your last air filter change and you're noticing a sluggish air system, it is probably time to replace the filter.

Step 1

Remove the glove compartment box using the screwdriver to unbolt the screws above the passenger-side floor in your GMC.

Step 2

Locate the cabin air filter by removing the black plastic panel to expose the filter's handle. The panel should pull off easily without any tools; if it is difficult to grasp, use a flat-head screwdriver to nudge it open with a slight prying motion.

Step 3

Pull the filter handle to remove the old filter from the cabin container. Use the shop rag to help prevent dirt and dust from spreading into the cabin or onto the floor.

Step 4

Moisten the shop rag with warm water and wipe out the inside of the air filter container. (Do not use any cleaners.)

Step 5

Place the new filter into the cabin container. Check to be sure it is fully secured in place before replacing the lid.

Step 6

Put the lid back onto the air filter container and listen for a clicking sound, indicating that the cover is on correctly. If necessary, jiggle the lid a bit to be sure it doesn't fall back off.

Step 7

Re-mount the glove compartment using the screwdriver and screws you removed.

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