For 1990-2009 cars

### Normal Maintenance

This schedule is vehicles that:

• | Carry passengers and cargo within recommended limits. This vehicles limits are listed on the Certification/Tire label. Refer to Vehicle Certification Label in General Information.

• | Vehicles driven on reasonable road surfaces within legal driving limits.

• | Use the recommended fuel.

Perform the following services up to 166 000 km (100,000 mi) and after 166 000 km (100,000 mi) at the same intervals.

Refer to Explanation of Scheduled Services for further explanation of the maintenance services.

This vehicle has a computer that indicates when to change the engine oil. This is not based on mileage, but on engine revolutions and engine operating temperature. When the computer has calculated that the oil needs changing, the Oil Life Monitor will indicate that a change is necessary. Refer to GM Oil Life System Resetting .

#### 1 600 km (1,000 mi)

Perform the wheel stud nut service. (38)

#### 5 000 km (3,000 mi)

• | Check Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the clutch pedal free travel service. (10)

• | Perform the rear axle air shift motor service. (11)

#### 10 000 km (6,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the chassis lubrication service - or every 6 months, whichever occurs first. (12)

• | Lubricate door hinge pins and rollers with engine oil.

• | Perform the wheels and tires service. (15)

• | Perform the hydraulic brake service - or every 6 months, whichever occurs first. (7)

• | Perform the hydraulic parking brake service - or every 6 months, whichever occurs first. (8)

• | Inspect the clutch pedal free travel. (10)

#### 15 000 km (9,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

#### 20 000 km (12,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the chassis lubrication service - or every 6 months, whichever occurs first. (12)

• | Lubricate door hinge pins and rollers with engine oil.

• | Perform the wheels and tires service. (15)

• | Perform the hydraulic brake service - or every 6 months, whichever occurs first. (7)

• | Perform the hydraulic parking brake service - or every 6 months, whichever occurs first. (8)

• | Perform the engine drive belts service - or every 12 months, whichever occurs first. (18)

• | Inspect the clutch pedal free travel. (10)

• | Perform the thermostatically controlled engine cooling fan service. (4, 19)

• | Perform the shields and the underhood insulation service. (4, 5, 20)

• | Inspect the operation of the air brake relay valve operation for leaks - or every month or every 300 hours, whichever occurs first.

#### 25 000 km (15,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the steering system service. (13)

• | Perform the front and the rear suspension service. (14)

• | Perform the spring-to-axle U-bolts and the shackle bolts service. (16)

• | Perform the exhaust system service - or every 6 months, whichever occurs first. (3, 4, 17)

• | Perform the air brake service - or every 6 months, whichever occurs first. (33)

#### 30 000 km (18,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the Monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the chassis lubrication service - or every 6 months, whichever occurs first. (12)

• | Inspect door hinge pins and bushings and replace as necessary. Lubricate door hinge pins and rollers with engine oil.

• | Perform the wheels and tires service. (15)

• | Perform the hydraulic brake service - or every 6 months, whichever occurs first. (7)

• | Perform the hydraulic brake caliper service - or every 6 months, whichever occurs first. (21)

• | Perform the hydraulic parking brake service - or every 6 months, whichever occurs first. (8)

• | Inspect the clutch pedal free travel. (10)

• | Clean airbrake application valve or - every 3 months or every 300 hours, whichever occurs first. Lubricate the linkage.

#### 35 000 km (21,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the Monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

#### 40 000 km (24,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the Monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the chassis lubrication service or every 6 months, whichever occurs first. (12)

• | Lubricate door hinge pins and rollers with engine oil.

• | Perform the wheel bearing - grease type - service - or every 24 months, whichever occurs first, and whenever the hubs are removed). (22)

• | Perform the wheels and tires service. (15)

• | Perform the hydraulic brake service - or every 6 months, whichever occurs first. (7)

• | Perform the hydraulic parking brake service - or every 6 months, whichever occurs first. (8)

• | Perform the engine drive belts service - or every 12 months, whichever occurs first. (18)

• | Inspect the clutch pedal free travel. (10)

• | Perform the thermostatically controlled engine cooling fan service. (4, 19)

• | Perform the shields and the underhood insulation service. (4, 5, 20)

• | Perform the air intake system service - or every 24 months, whichever occurs first. (4, 5, 23)

• | Perform the Evaporative Control System service (ECS), if equipped - or every 24 months, whichever occurs first. (3, 24)[Dagger]

• | Perform the rear axle air shift motor service. (11)

• | Inspect the operation of the air brake relay valve for leaks - or every month or every 300 hours, whichever occurs first.

• | Perform the air brake chamber service - or every 2 months, whichever occurs first. (35)

• | Trailer brake hand control valve service - or every 3 months, or 900 hours, whichever occurs first. (36)

#### 45 000 km (27,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the Monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

#### 50 000 km (30,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the chassis lubrication service - or every 6 months, whichever occurs first. (12)

• | Replace the fuel filter(s) - or every 12 months, whichever occurs first. (3)

• | Replace the air cleaner filter - or every 24 months, whichever occurs first. (3, 4, 25)

• | Perform the steering system service. (13)

• | Perform the front and the rear suspension service. (14)

• | Perform the spring-to-axle U-bolts and the shackle bolts service. (16)

• | Perform the exhaust system service - or every 6 months, whichever occurs first. (3, 4, 17)

• | Perform the air brake service or every 6 months, whichever occurs first. (33)

• | Lubricate door hinge pins and rollers with engine oil.

• | Perform the wheels and tires service. (15)

• | Perform the hydraulic brake service - or every 6 months, whichever occurs first. (7)

• | Perform the hydraulic parking brake service - or every 6 months, whichever occurs first. (8)

• | Inspect the clutch pedal free travel. (10)

• | Perform the air brake automatic slack adjuster service - or every 500 hours, whichever occurs first. (34)

#### 55 000 km (33,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

#### 60 000 km (36,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the Monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the chassis lubrication service - or every 6 months, whichever occurs first. (12)

• | Inspect the door hinge pins and bushings and replace as necessary. Lubricate the door hinge pins and roller with engine oil.

• | Perform the wheels and tires service. (15)

• | Perform the hydraulic brake service - or every 6 months, whichever occurs first. (7)

• | Perform the hydraulic brake caliper service - or every 6 months, whichever occurs first. (21)

• | Perform the hydraulic parking brake service - or every 6 months, whichever occurs first. (8)

• | Perform the engine drive belts service or every 12 months, whichever occurs first. (18)

• | Inspect the clutch pedal free travel. (10)

• | Perform the thermostatically controlled engine cooling fan service. (4, 19)

• | Perform the shields and the underhood insulation service. (4, 5, 20)

• | Inspect the operation of the air brake relay valve for leaks or every month or every 300 hours, whichever occurs first.

• | Clean air brake application valve - or every 3 month or every 300 hours, whichever occurs first. Lubricate the linkage.

#### 65 000 km (39,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the Monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

#### 70 000 km (42,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the chassis lubrication service - or every 6 months, whichever occurs first. (12)

• | Lubricate door hinge pins and rollers with engine oil.

• | Perform the wheels and tires service. (15)

• | Perform the hydraulic brake service - or every 6 months, whichever occurs first. (7)

• | Perform the hydraulic parking brake service - or every 6 months, whichever occurs first. (8)

• | Inspect the clutch pedal free travel. (10)

#### 75 000 km (45,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the Monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the front and rear suspension service. (14)

• | Perform the steering system service. (13)

• | Perform the spring-to-axle U-bolts and the shackle bolts service. (16)

• | Perform the exhaust system service - or every 6 months, whichever occurs first. (3, 4, 17)

• | Perform the air brake service - or every 6 months, whichever occurs first. (33)

#### 80 000 km (48,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the Monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the chassis lubrication service - or every 6 months, whichever occurs first. (12)

• | Lubricate door hinge pins and rollers with engine oil.

• | Perform the wheel bearing - grease type - service - or every 24 months, whichever occurs first and whenever the hubs are removed). (22)

• | Perform the wheels and tires service. (15)

• | Perform the hydraulic brake service - or every 6 months, whichever occurs first. (7)

• | Perform the hydraulic parking brake service - or every 6 months, whichever occurs first. (8)

• | Perform the engine drive belts service - or every 12 months, whichever occurs first. (18)

• | Inspect the clutch pedal free travel. (10)

• | Thermostatically controlled engine cooling fan service. (4, 19)

• | Perform the shields and the underhood insulation service. (4, 5, 20)

• | Perform the air intake system service - or every 24 months, whichever occurs first. (4, 5, 23)

• | Perform the Evaporative Control System service (ECS) service, if equipped - or every 24 months, whichever occurs first. (3, 24)[Dagger]

• | Perform the rear axle air shift motor service. (11)

• | Inspect the operation of the air brake relay valve for leaks - or every month or every 300 hours, whichever occurs first.

• | Perform the air brake chamber service - or every 2 months, whichever occurs first. (35)

• | Trailer brake hand control valve service - or every 3 months, or 900 hours, whichever occurs first. (36)

#### 85 000 km (51,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

#### 90 000 km (54,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the Monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the chassis lubrication service - or every 6 months, whichever occurs first. (12)

• | Inspect the door hinge pins and bushings and replace if necessary. Lubricate the door hinge pins and rollers with engine oil.

• | Perform the wheels and tires service. (15)

• | Perform the hydraulic brake service - or every 6 months, whichever occurs first. (7)

• | Perform the hydraulic brake caliper service - or every 6 months, whichever occurs first. (21)

• | Perform the hydraulic parking brake service - or every 6 months, whichever occurs first. (8)

• | Inspect the clutch pedal free travel. (10)

• | Clean the air brake application valve - or every 3 months or 300 hours, whichever occurs first. Lubricate the linkage.

• | Spark Plug Service. (3, 26)

#### 95 000 km (57,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the Monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

#### 100 000 km (60,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the Monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the chassis lubrication service or every 6 months, whichever occurs first. (12)

• | Replace the fuel filter(s) - or every 12 months, whichever occurs first. (3)

• | Replace the air cleaner filter service - or every 24 months, whichever occurs first. (3, 4, 25)

• | Perform the steering system service. (13)

• | Perform the front and the rear suspension service. (14)

• | Perform the spring-to-axle U-bolts and the shackle bolts service. (16)

• | Perform the exhaust system service - or every 6 months, whichever occurs first. (3, 4, 17)

• | Perform the air brake service - or every 6 months, whichever occurs first. (33)

• | Lubricate door hinge pins and rollers with engine oil.

• | Perform the wheels and tires service. (15)

• | Perform the hydraulic brake service - or every 6 months, whichever occurs first. (7)

• | Perform the hydraulic parking brake service - or every 6 months, whichever occurs first. (8)

• | Perform the engine drive belts service - or every 12 months, whichever occurs first. (18)

• | Inspect the clutch pedal free travel. (10)

• | Perform the thermostatically controlled engine cooling fan service. (4, 19)

• | Perform the shields and the underhood insulation service. (4, 5, 20)

• | Inspect the operation of the air brake relay valve for leaks - or every month or every 300 hours, whichever occurs first.

• | Perform the air brake automatic slack adjuster service - or every 500 hours, whichever occurs first. (34)

#### 105 000 km (63,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the Monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

#### 110 000 km (66,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the chassis lubrication service - or every 6 months, whichever occurs first. (12)

• | Lubricate the door hinge pins and rollers with engine oil.

• | Perform the wheels and tires service. (15)

• | Perform the hydraulic brake service - or every 6 months, whichever occurs first. (7)

• | Perform the hydraulic parking brake service - or every 6 months, whichever occurs first. (8)

• | Inspect the clutch pedal free travel. (10)

#### 115 000 km (69,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

#### 120 000 km (72,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the chassis lubrication service - or every 6 months, whichever occurs first. (12)

• | Inspect the door hinge pins and bushings and replace as necessary. Lubricate the door hinge pins and rollers with engine oil.

• | Perform the wheel bearing - grease type - service - or every 24 months, whichever occurs first and whenever the hubs are removed). (22)

• | Perform the wheels and tires service. (15)

• | Perform the hydraulic brake service - or every 6 months, whichever occurs first. (7)

• | Perform the hydraulic brake caliper service - or every 6 months, whichever occurs first. (21)

• | Perform the hydraulic parking brake service - or every 6 months, whichever occurs first. (8)

• | Perform the engine drive belts service - or every 12 months, whichever occurs first. (18)

• | Inspect the clutch pedal free travel. (10)

• | Perform the thermostatically controlled engine cooling fans service. (4 , 19)

• | Perform the shields and the underhood insulation service. (4, 5, 20)

• | Perform the air intake system service - or every 24 months, whichever occurs first. (4, 5, 23)

• | Perform the fuel tank, the fuel cap, and the fuel lines service or every 72 months, whichever occurs first. (3, 27)[Dagger]

• | Inspect the EGR system - or every 72 months, whichever occurs first. (3, 28)

• | Perform the Evaporative Control System service (ECS), if equipped - or every 24 months, whichever occurs first. (3, 24)[Dagger]

• | Perform the rear axle air shift motor service. (11)

• | Inspect the operation of the air brake relay valve for leaks - or every month or every 300 hours, whichever occurs first.

• | Clean the air brake application valve - or every 3 months or 300 hours, whichever occurs first. Lubricate the linkage.

• | Perform the air brake chamber service - or every 2 months, whichever occurs first. (35)

• | Trailer brake hand control valve service - or every 3 months, or 900 hours, whichever occurs first. (36)

#### 125 000 km (75,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and filter, if necessary. Reset the monitor. (3, 9).

• | Check fluid levels - or every 3 months, whichever occurs first. (1) (2) (6)

• | Perform the steering system service. (13)

• | Perform the front and the rear suspension service. (14)

• | Perform the spring-to-axle U-bolts and the shackle bolts service. (16)

• | Perform the exhaust system service - or every 6 months, whichever occurs first. (3, 4, 17)

• | Perform the air brake service - or every 6 months, whichever occurs first. (33)

#### 130 000 km (78,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the Monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the chassis lubrication service - or every 6 months, whichever occurs first. (12)

• | Lubricate door hinge pins and rollers with engine oil.

• | Perform the wheels and tires service. (15)

• | Perform the hydraulic brake service - or every 6 months, whichever occurs first. (7)

• | Perform the hydraulic parking brake service - or every 6 months, whichever occurs first. (8)

• | Inspect the clutch pedal free travel. (10)

#### 135 000 km (81,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the Monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the wheel bearings service for the Eaton® Axle - oil filled - or every 24 months, whichever occurs first. (22, 39)

#### 140 000 km (84,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the chassis lubrication service - or every 6 months, whichever occurs first. (12)

• | Lubricate the door hinge pins and rollers with engine oil.

• | Perform the wheels and tires service. (15)

• | Perform the hydraulic brake service - or every 6 months, whichever occurs first. (7)

• | Perform the hydraulic parking brake service - or every 6 months, whichever occurs first. (8)

• | Perform the engine drive belts service - or every 12 months, whichever occurs first. (18)

• | Inspect the clutch pedal free travel. (10)

• | Perform the thermostatically controlled engine cooling fan service. (4, 19)

• | Perform the shields and the underhood insulation service. (4, 5, 20)

• | Inspect the operation of the air brake relay valve for leaks or every month or every 300 hours, whichever occurs first.

#### 145 000 km (87,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the Monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

#### 150 000 km (90,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the chassis lubrication service or every 6 months, whichever occurs first. (12)

• | Replace the fuel filter(s) - or every 12 months, whichever occurs first. (3)

• | Replace the air cleaner filter - or every 24 months, whichever occurs first. (3, 4, 25)

• | Perform the steering system service. (13)

• | Perform the front and the rear suspension service. (14)

• | Perform the spring-to-axle U-bolts and the shackle bolts service. (16)

• | Perform the exhaust system service - or every 6 months, whichever occurs first. (3, 4, 17)

• | Perform the air brake service - or every 6 months, whichever occurs first. (33)

• | Inspect the door hinge pins and bushings and replace as necessary. Lubricate the door hinge pins and rollers with engine oil.

• | Perform the wheels and tires service. (15)

• | Perform the hydraulic brake service - or every 6 months, whichever occurs first. (7)

• | Perform the hydraulic brake caliper service - or every 6 months, whichever occurs first. (21)

• | Perform the hydraulic parking brake service - or every 6 months, whichever occurs first. (8)

• | Inspect the clutch pedal free travel. (10)

• | Perform the air brake automatic slack adjuster service - or every 500 hours, whichever occurs first. (34)

• | Clean the air brake application valve - or every 3 months or 300 hours, whichever occurs first. Lubricate the linkage.

#### 155 000 km (93,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

#### 160 000 km (96,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

• | Perform the chassis lubrication service - or every 6 months, whichever occurs first. (12)

• | Lubricate the door hinge pins and rollers with engine oil.

• | Perform the wheel bearing - grease type - service - or every 24 months, whichever occurs first and whenever the hubs are removed). (22)

• | Perform the wheels and tires service. (15)

• | Perform the hydraulic brake service - or every 6 months, whichever occurs first. (7)

• | Perform the hydraulic parking brake service - or every 6 months, whichever occurs first. (8)

• | Perform the engine drive belts service - or every 12 months, whichever occurs first. (18)

• | Inspect the clutch pedal free travel. (10)

• | Perform the thermostatically controlled engine cooling fan service. (4, 19)

• | Perform the shields and the underhood insulation service. (4, 5, 20)

• | Perform the air intake system service - or every 24 months, whichever occurs first. (4, 5, 23)

• | Perform the Evaporative Control System Service (ECS), if equipped - or every 24 months, whichever occurs first. (3, 24)[Dagger]

• | Perform the rear axle air shift motor service. (11)

• | Inspect the operation of the air brake relay valve for leaks or every month - or every 300 hours, whichever occurs first.

• | Perform the air brake chamber service - or every 2 months, whichever occurs first. (35)

• | Trailer brake hand control valve service - or every 3 months, or 900 hours, whichever occurs first. (36)

#### 165 000 km (99,000 mi)

• | Check the Oil Life Monitor. Change the engine oil and the filter, if necessary. Reset the monitor. (3, 9)

• | Inspect the fluid levels - or every 3 months, whichever occurs first. (1, 2, 6)

#### 166 000 km (100,000 mi)

• | Change the power steering fluid - or every 24 months, whichever occurs first. (13)

• | Replace the power steering reservoir filter element or every 24 months, whichever occurs first.

• | Perform the front axle service - or every 36 months, whichever occurs first. (32)

• | Perform the rear axle service for the Eaton®, Rockwell, or Spicer® Axles - or every 12 months, whichever occurs first. (31, 39)

• | Perform the exhaust brake service, if equipped. Inspect for excessive spindle free play and smooth operation. Lubricate the ball joint cap.

• | Perform the air brake service - or every 12 months, or 3,600 hours, whichever occurs first. (37)

#### 240 000 km (150,000 mi)

Perform the cooling system service - or every 60 months since the last service, whichever occurs first. (3, 30)

#### 320 000 km (200,000 mi)

Remove, disassemble, clean, and inspect the air brake trailer supply valve - or every 2 years or 7,200 hours, whichever occurs first.

#### 400 000 km (250,000 mi)

• | Perform the wheel bearing service for the Eaton® Axle - oil filled - or every 36 months, whichever occurs first. (22, 40)

• | Perform the rear axle service for the Eaton®, Rockwell or Spicer® Axles - or every 36 months, whichever occurs first. (31, 40)

• | Change the manual transmission fluid - or every 60 months, whichever occurs first.

#### 480 000 km (300,000 mi)

Remove, disassemble, clean, and inspect the air brake air dryer - or every 3 years or 10,800 hours, whichever occurs first. Replace the desiccant on the Bendix-Westinghouse units.