"I" - Extensive Idling, Low-Speed, Commercial Use-Taxi, Police, Delivery

SPECIAL OPERATING CONDITION "I" - Extensive Idling And/or Low-speed Driving For Long Distances As In Heavy Commercial Use Such As Delivery, Taxi, Patrol Car Or Livery

Every 5,000 miles
- Inspect wheels and related components for abnormal noise, wear, looseness or drag.
- Rotate tires, inspect tire wear and measure tread depth. If equipped with the dual rear wheels, rotate front wheels when specified, rear wheels only if unusual wear is noted.
- Inspect brake system.
- Lubricate control arm and steering ball joints if equipped with grease fittings.

Every 5,000 miles or 6 months
- Inspect and lubricate U-joints.

Every 5,000 miles or 6 months or 200 engine hours
- Change engine oil and replace oil filter.

Every 30,000 miles
- Change automatic transmission/transaxle fluid (Except on 6R80 and TorqShift transmissions).
- Replace front wheel bearing grease/grease seals if non-sealed bearings are used (2WD vehicles).

Every 60,000 miles
- Change transfer case fluid.
- Replace spark plugs.

Inspect frequently, service as required
- Cabin air filter (if equipped).
- Engine air filter.