2003 Chevrolet Blazer Owner's Manual - Page 281

To check or replace the engine air cleaner/filter do the following: 1. Remove the fasteners that hold the cover on and remove the cover. 2. Lift out the engine air cleaner/filter. Nofices If the air cleaner/filter is off, a backfire can cause a damaging engine fire.And, dirt can easily get into yourengine, which will damage it. Always have the air cleanedfilter in place when you're driving. 3. Insert a new air filter, if needed. See Normal Maintenance Replacement Parts on page 5-96 to determine which filter to use. 4. Reinstall the engine air cleaner/filter cover. Automatic Transmission Fluid When to Check and Change A good time to check your automatic transmissionfluid level is when the engine oil is changed. Refer to the Maintenance Schedule to determine when to replace the engine air cleaner/filter. See Part A: Scheduled Maintenance Services on page 6-4. Change both the fluid and filter every 15,000 miles (25 000 km) if the vehicle is mainly driven under one or more of these conditions: In heavy city traffic where the outside temperature regularly reaches 90°F (32°C) or higher. Ob,.-ati.,, the e...Jne w . ~ . . the a,, cleaner/filter off can cause you or others to be burned. The air cleaner not only cleans theair, it stops flame if the engine backfires. If it isn't there and the engine backfires, you could be burned. Don't drive with it off, and be careful working off. on the engine with the air cleaner/filter In hilly or mountainous terrain. When doing frequent trailer towing. Uses such as found in taxi, police or delivery service. If you do not use your vehicle under any of these conditions, change the fluid and filter every 50,000 miles (83 000 km). See Part A: Scheduled Maintenance Serviceson page 6-4. I 5-18