2010 GMC Savana 2500 Cargo Owner's Manual - Page 282

When to Inspect the Engine Air Cleaner/Filter Inspect the air cleaner/filter at the Maintenance II intervals and replace it at the first oil change after each 50,000 mile (80 000 km) interval. See Scheduled Maintenance on page 7-3 for more information. If you are driving in dusty/dirty conditions, inspect the filter at each engine oil change. 5. Reinstall the cover and fasten the retaining clips. { WARNING: Operating the engine with the air cleaner/filter off can cause you or others to be burned. The air cleaner not only cleans the air; it helps to stop flames if the engine backfires. If it is not there and the engine backfires, you could be burned. Do not drive with it off, and be careful working on the engine with the air cleaner/filter off. Notice: If the air cleaner/filter is off, a backfire can cause a damaging engine fire. And, dirt can easily get into the engine, which will damage it. Always have the air cleaner/filter in place when you are driving. How to Inspect the Engine Air Cleaner/Filter To inspect the air cleaner/filter, remove the filter from the vehicle and lightly shake the filter to release loose dust and dirt. If the filter remains caked with dirt, a new filter is required. Never use compressed air to clean the filter. To inspect or replace the engine air cleaner/filter, do the following: 1. Unhook the retainer clips and remove the cover. 2. Lift the filter out of the engine air cleaner/filter housing. Care should be taken to dislodge as little dirt as possible. 3. Clean the engine air cleaner/filter housing. 4. Inspect or replace the engine air cleaner/filter. Make sure that the filter fits properly into the housing. 6-20 Automatic Transmission Fluid (4-Speed Transmission) If your vehicle has the DURAMAX Diesel engine, see the DURAMAX Diesel manual for more information.