Service Intervals: 1999

Check fluid level at every engine oil change. Filter change and band adjustments are not required under normal operation. Under normal service, change fluid at 30,000-mile intervals on AX4N, AX4S, 4R70W and 4R100 transmissions. See APPLICATION  table for transmission application. If vehicle is operated under following conditions, replace transmission fluid every 30,000 miles.

• In hot weather with temperature greater than 90°F (32°C), carrying heavy loads and/or in hilly terrain.
• Towing a trailer or using a car top carrier.
• In police, taxi or door-to-door delivery service.