2003 Cadillac Seville Owner's Manual - Page 272

3. Reinstall the clean air duct over the mass a.irf!ow sensor. Make sure that the duct is secure around the entire outer edge of the sensor. When to Check and Change A good time to check your automatic transaxle fluid level is when the engine oil is changed. Change both the fluid and filter every 50,000 miles (83 000 km) if the vehicle is mainly driven under one more of these conditions: 01 4. Tighten the air duct clamp. Refer to the Maintenance Schedule to determine when to replace the air filter. See Part A: Scheduled Maintenance Services on page 6-4. In heavy city traffic where the outside temperature regularly reaches 90" F (32" C) or higher. 0 0 In hilly or mountainous terrain. When doing frequent trailer towing. Uses such as found in taxi, police or delivery service. Ope...:inc_ le engine with air the clean er off can cause you or othersto be burned. The air cleaner not only cleans theair, it stops flame if the engine backfires. Ifit isn't there and the engine backfires, you could be burned. Don't drive with it off, and be careful working on the engine with the air cleaner/filter off. If you do not use your vehicle under any of these conditions, the fluid and filter do not require change until the message CHANGE TRANS FLUID appears on the Driver Information Center. See Part A: Scheduled Maintenance Services on page 6-4. Notice: If the air cleanedfilter is off, a backfire can cause a damaging engine fire. And, dirt can it. easily get into your engine, which will damage kiways have the air cieaneriiii'ter in piace when you're driving. 5-23