2008 Cadillac STS Air Filter

The procedure is to remove the air cleaner intake duct, fully open the throttle valve, use a clean shop towel and Top Engine Cleaner GM P/N 1052626 or equivalent product to clean the Throttle Body bore and the throttle valve plate, install the air cleaner duct.

You should inspect and replace the lower Intake Manifold gasket only if the gasket is worn or damaged.

The procedure is to raise and support the vehicle, twist the air tube seal connection on the rear shocks, disconnect the air tube from the rear shock absorber, disconnect the exhaust system from the rear exhaust hangers, support the exhaust, remove the automatic level control compressor with the bracket attached, disconnect the air tube from the right wheel house liner clip, remove the wheelhouse liner screw to position the liner to access the air tube, remove the air tube from the frame at the right wheel house liner, remove the fuel filler neck bolt and reposition the air tubes, remove the air tubes from the vehicle.