How to Replace Air Filter 08-14 Cadillac CTS
Difficulty: Beginner · About 25 min · Cadillac Cts
Replace the engine air filter in a 2008–2014 Cadillac CTS by opening the intake housing, swapping the filter, and reconnecting the intake duct and sensor wiring.
Tools you will need
- 8mm socket and ratchet
- T25 Torx socket
Parts and supplies
- Engine air filter
Steps
- Open the intake housing
Remove the side cover and disconnect the electrical plug from the intake tube. Loosen the hose clamp with an 8mm socket, then remove the three T25 housing screws.
- Remove the old filter
Lift the airbox lid enough to access the filter and take the filter out. Clear loose debris from the housing without pushing dirt into the intake duct.
- Fit the replacement filter
Seat the new filter evenly in the airbox, making sure its perimeter lies flat in the sealing channel. Reposition the lid and install its three screws without cross-threading them.
- Reconnect the intake duct
Align the intake tube with the housing, tighten its clamp securely, and reconnect the electrical plug. Refit the side cover and check that the duct and airbox are fully closed.
Check your vehicle’s repair manual for exact specifications and fit.