GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Sierra - 4WD 🢒 General Information 🢒 Maintenance and Lubrication 🢒 Maintenance Schedule

Maintenance Schedule GASOLINE

Using The Maintenance Schedule

Because of the different ways GM vehicles are used, maintenance needs vary. More frequent maintenance intervals than found in this manual may by needed. When reading this schedule, keep in mind the conditions under which the vehicle is operated. Adjust the maintenance intervals accordingly.

The proper fluids and lubricants to use are listed in Fluid and Lubricant Recommendations . Use the proper fluids and lubricants whenever servicing this vehicle.

The maintenance schedules found in this manual are for vehicles that:

    • Carry passengers and cargo within recommended limits. Refer to Vehicle Certification Label in General Information.
    • Are driven on reasonable road surfaces within legal driving limits.
    • Are driven off-road in the recommended manner.
    • Use recommended unleaded fuel.

Scheduled Maintenance

The services shown in this schedule up to 100,000 miles (166,000 km) should be performed after 100,000 miles (166,000 km) at the same intervals. The service shown at 150,000 miles (240,000 km) should be performed at the same interval after 150,000 miles (240,000 km).

7,500 Miles (12 000 Km)

    • Inspect the oil life monitor. If you change the engine oil and the filter, reset the monitor. Refer to Oil Life Monitor Resetting .
    • Lubricate the chassis components (or at each oil and filter change).
    • Inspect rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking.
    • Rotate the tires. Refer to Tire Rotation for the proper rotation pattern and additional information. Refer to Tire Rotation in Tires and Wheels.

15,000 Miles (25 000 Km)

    • Inspect the oil life monitor. If you change the engine oil and the filter, reset the monitor. Refer to Oil Life Monitor Resetting .
    • Lubricate the chassis components (or at each oil and filter change).
    • Replace the passenger compartment air filter, if equipped. Refer to Passenger Compartment Air Filter Replacement in HVAC Systems with A/C manual. If you drive regularly under dusty conditions, the filter may require replacement more often.
    • Inspect rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking.
    • On vehicles with a GVWR above 8,500 lbs. only, inspect the shields and the underhood insulation for damage or looseness. Adjust or replace the components as required. This is a Noise Emission Control Service. This service is applicable only to vehicles sold in the United States.
    • Rotate the tires. Refer to Tire Rotation for the proper rotation pattern and additional information. Refer to Tire Rotation in Tires and Wheels.

22,500 Miles (37 500 Km)

    • Inspect the oil life monitor. If you change the engine oil and the filter, reset the monitor. Refer to Oil Life Monitor Resetting .
    • Lubricate the chassis components (or at each oil and filter change).
    • Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking.
    • Rotate the tires. Refer to Tire Rotation for the proper rotation pattern and additional information. Refer to Tire Rotation in Tires and Wheels.

30,000 Miles (50 000 Km)

    • Inspect the oil life monitor. If you change the engine oil and the filter, reset the monitor. Refer to Oil Life Monitor Resetting .
    • Lubricate the chassis components (or at each oil and filter change).
    • Replace the passenger compartment air filter, if equipped. Refer to Passenger Compartment Air Filter Replacement in HVAC Systems with A/C manual. If you drive regularly under dusty conditions, the filter may require replacement more often.
    • Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking.
    • Rotate the tires. Refer to Tire Rotation for the proper rotation pattern and additional information. Refer to Tire Rotation in Tires and Wheels.
    • Replace the fuel filter. This is an Emission Control Service.
    • On vehicles with a GVWR above 8,500 lbs. only, inspect the shields and the underhood insulation for damage or looseness. Adjust or replace the components as required. This is a Noise Emission Control Service applicable only to vehicles sold in the United States.

37,500 Miles (62 500 Km)

    • Inspect the oil life monitor. If you change the engine oil and the filter, reset the monitor. Refer to Oil Life Monitor Resetting .
    • Lubricate the chassis components (or at each oil and filter change).
    • Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking.
    • Rotate the tires. Refer to Tire Rotation for the proper rotation pattern and additional information. Refer to Tire Rotation in Tires and Wheels.

45,000 Miles (75 000 Km)

    • Inspect the oil life monitor. If you change the engine oil and the filter, reset the monitor. Refer to Oil Life Monitor Resetting .
    • Replace the passenger compartment air filter, if equipped. Refer to Passenger Compartment Air Filter Replacement in HVAC Systems with A/C manual. If you drive regularly under dusty conditions, the filter may require replacement more often.
    • On vehicles with a GVWR above 8,500 lbs. only, inspect the shields and the underhood insulation for damage or looseness. Adjust or replace the components as required. This is a Noise Emission Control Service applicable only to vehicles sold in the United States.
    • Rotate the tires. Refer to Tire Rotation for the proper rotation pattern and additional information. Refer to Tire Rotation in Tires and Wheels.

50,000 Miles (83 000 Km)

    • Change the automatic transmission fluid and filter if the vehicle GVWR is over 8,600 lbs. or if the vehicle is mainly driven under 1 or more of the following conditions:
       - In heavy city traffic where the outside temperature regularly reaches 90°F (32°C) or higher
       - 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 the vehicle under any of these conditions, change the fluid and the filter at 100,000 miles (166,000 km).
    • The manual transmission fluid does not require changing.

52,500 Miles (87 500 Km)

    • Inspect the oil life monitor. If you change the engine oil and the filter, reset the monitor. Refer to Oil Life Monitor Resetting .
    • Lubricate the chassis components (or at each oil and filter change).
    • Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking.
    • Rotate the tires. Refer to Tire Rotation for the proper rotation pattern and additional information. Refer to Tire Rotation in Tires and Wheels.

60,000 Miles (100 000 Km)

    • Inspect the oil life monitor. If you change the engine oil and the filter, reset the monitor. Refer to Oil Life Monitor Resetting .
    • Lubricate the chassis components (or at each oil and filter change).
    • Replace the passenger compartment air filter, if equipped. Refer to Passenger Compartment Air Filter Replacement in HVAC Systems with A/C manual. If you drive regularly under dusty conditions, the filter may require replacement more often.
    • Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking.
    • Rotate the tires. Refer to Tire Rotation for the proper rotation pattern and additional information. Refer to Tire Rotation in Suspension.
    • Inspect the engine accessory drive belt. This is an Emission Control Service.
    • Replace the fuel filter. This is an Emission Control Service.
    • Inspect the fuel tank, the cap and the lines for damage or leaks. Inspect the fuel cap gasket for any damage. Replace the parts as needed. This is an Emission Control Service.
    • On vehicles with a GVWR above 8,500 lbs. only, inspect the shields and the underhood insulation for damage or looseness. Adjust or replace the components as required. This is a Noise Emission Control Service applicable only to vehicles sold in the United States.
    • Inspect the exhaust gas recirculation (EGR) system as described in the service manual. This is an Emission Control Service.
    • Inspect the evaporative control system. Inspect all the fuel and vapor lines and the hoses for proper for proper hook-up, routing and condition. Ensure that the purge valve works properly, if equipped. Replace the components as needed. This is an Emission Control Service.

67,500 Miles (112 500 Km)

    • Inspect the oil life monitor. If you change the engine oil and the filter, reset the monitor. Refer to Oil Life Monitor Resetting .
    • Lubricate the chassis components (or at each oil and filter change).
    • Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking.
    • Rotate the tires. Refer to Tire Rotation for the proper rotation pattern and additional information. Refer to Tire Rotation in Tires and Wheels.

75,000 Miles (125 000 Km)

    • Inspect the oil life monitor. If you change the engine oil and the filter, reset the monitor. Refer to Oil Life Monitor Resetting .
    • Lubricate the chassis components (or at each oil and filter change).
    • Replace the passenger compartment air filter, if equipped. Refer to Passenger Compartment Air Filter Replacement in HVAC Systems with A/C manual. If you drive regularly under dusty conditions, the filter may require replacement more often.
    • Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking.
    • On vehicles with a GVWR above 8,500 lbs. only, inspect the shields and the underhood insulation for damage or looseness. Adjust or replace the components as required. This is a Noise Emission Control Service applicable only to vehicles sold in the United States.
    • Rotate the tires. Refer to Tire Rotation for the proper rotation pattern and additional information. Refer to Tire Rotation in Suspension.

82,500 Miles (137 500 Km)

    • Inspect the oil life monitor. If you change the engine oil and the filter, reset the monitor. Refer to Oil Life Monitor Resetting .
    • Lubricate the chassis components (or at each oil and filter change).
    • Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking.
    • Rotate the tires. Refer to Tire Rotation for the proper rotation pattern and additional information. Refer to Tire Rotation in Tires and Wheels.

90,000 Miles (150 000 Km)

    • Inspect the oil life monitor. If you change the engine oil and the filter, reset the monitor. Refer to Oil Life Monitor Resetting .
    • Lubricate the chassis components (or at each oil and filter change).
    • Replace the passenger compartment air filter, if equipped. Refer to Passenger Compartment Air Filter Replacement in HVAC Systems with A/C manual. If you drive regularly under dusty conditions, the filter may require replacement more often.
    • Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking.
    • Replace the fuel filter. This is an Emission Control Service.
    • On vehicles with a GVWR above 8,500 lbs. only, inspect the shields and the underhood insulation for damage or looseness. Adjust or replace the components as required. This is a Noise Emission Control Service applicable only to vehicles sold in the United States.
    • Rotate the tires. Refer to Tire Rotation for the proper rotation pattern and additional information. Refer to Tire Rotation in Tires and Wheels.

97,500 Miles (162 500 Km)

    • Inspect the oil life monitor. If you change the engine oil and the filter, reset the monitor. Refer to Oil Life Monitor Resetting .
    • Lubricate the chassis components (or at each oil and filter change).
    • Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking.
    • Rotate the tires. Refer to Tire Rotation for the proper rotation pattern and additional information. Refer to Tire Rotation in Tires and Wheels.

100,000 Miles (166 000 Km)

    • Inspect the spark plug wires. This is an Emission Control Service.
    • Replace the spark plugs. This is an Emission Control Service.
    • Change the automatic transmission fluid and the filter if the vehicle's GVWR is over 8600 lbs. or if the vehicle is mainly driven under 1 or more of these conditions:
       - In heavy city traffic where the outside temperature regularly reaches 90°F (32°C) or higher.
       - In hilly or mountainous terrain.
       - When doing frequent trailer towing.
       - Uses such as found in taxi, police or delivery service.
    • If you have not previously changed the automatic transmission fluid, change both the fluid and the filter. Manual transmission fluid doesn't require change.
    • Inspect the positive crankcase ventilation (PCV) valve. This is an Emission Control Service.

150,000 Miles (240 000 Km)

Drain, flush and refill the cooling system (or every 60 months since the last service, whichever occurs first). For the correct procedure refer to Cooling System Draining and Filling in Engine Cooling. Inspect the hoses. Clean the radiator, the condenser, the pressure cap and the neck. Pressure test the cooling system and the pressure cap. This is an Emission Control Service.