2006 GMC Yukon Owner's Manual - Page 395

How to Inspect the Engine Air Cleaner/Filter Vehicles With an Air Filter Restriction Indicator Locate the air filter restriction indicator on the engine air cleaner/filter cover. When the indicator turns black or is in the red/orange "change" zone, replace the filter and reset the indicator. See the steps following to replace the engine air cleaner/filter and to reset the air filter restriction indicator. Replacing the Engine Air Cleaner/Filter and Resetting the Air Filter Restriction Indicator Vehicles Without an Air Filter Restriction Indicator To inspect the air cleaner/filter, remove the engine air cleaner/filter from the vehicle using the steps following. When you have the engine air cleaner/filter removed, lightly shake it to release loose dust and dirt. If the engine air cleaner/filter remains caked with dirt, a new filter is required. 1. Locate the air cleaner/filter assembly on the front corner of the engine compartment on the passenger's side of the vehicle. 2. Loosen the screws on the cover of the housing and lift up the cover. 5-21