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Makes 🢒 GMC_Truck 🢒 1998 🢒 Yukon - 4WD 🢒 General Information 🢒 Maintenance and Lubrication 🢒 Maintenance Schedule

Maintenance Schedule Gasoline

Long Trip/Highway Scheduled Maintenance (Gasoline)

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

Footnotes

@ The U.S. Environmental Protection Agency or the California Air Resources Board has determined that the failure to perform this maintenance item will not nullify the emission warranty or limit recall liability prior to the completion of the vehicle's useful life. We, however, urge that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded.

# Lubricate the front suspension, kingpin bushings, steering linkage, transmission shift linkage, transfer case shift linkage, park brake cable guides, rear driveline center splines, front axle propshaft spline and brake pedal springs. Ball joints and kingpin bushings should not be lubricated unless their temperature is -12°C (10°F) or higher, or they could be damaged.

+ A good time to inspect the brakes is during tire rotation.

12 500 km (7,500 mi)

    • Change engine oil and filter (or every 12 months, whichever occurs first).
        This is an Emission Control Service.
    • Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote #.)
    • Inspect rear axle fluid level and add fluid as needed.
    • Rotate tires. (See footnote +.)

25 000 km (15,000 mi)

    • Change engine oil and filter (or every 12 months, whichever occurs first).
        This is an Emission Control Service.
    • Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote #.)
    • Inspect rear axle fluid level and add fluid as needed.
    • Inspect shields and underhood insulation for damage or looseness. Adjust or replace as required.
        This is a Noise Emission Control Service. Applicable only to vehicles sold in the United States.
    • Rotate tires. (See footnote +.)

37 500 km (22,500 mi)

    • Change engine oil and filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote #.)
    • Inspect rear axle fluid level and add fluid as needed.
    • Rotate tires. (See footnote +.)

50 000 km (30,000 mi)

    • Change engine oil and filter (or every 12 months, whichever occurs first).
        This is an Emission Control Service.
    • Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote #.)
    • Inspect rear axle fluid level and add fluid as needed. Change axle fluid if the vehicle is driven in high-speed (above 40 mph or 70 km/h) conditions for extended peiods of time.
    • Clean and repack the front wheel bearings (or at each brake relining, whichever occurs first).
    • Rotate tires. (See footnote +.)
    • Replace fuel filter.
        This is an Emission Control Service. (See footnote @.)
    • Inspect shields and underhood insulation for damage or looseness. Adjust or replace as required.
        This is a Noise Emission Control Service. Applicable only to vehicles sold in the United States.

62 500 km (37,500 mi)

    • Change engine oil and filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote+.)
    • Inspect rear axle fluid level and add fluid as needed.
    • Rotate tires. (See footnote +.)

75 000 km (45,000 mi)

    • Change engine oil and filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote +.)
    • Inspect rear axle fluid level and add fluid as needed.
    • Inspect shields and underhood insulation for damage or looseness. Adjust or replace as required.
        This is a Noise Emission Control Service. Applicable only to vehicles sold in the United States.
    • Rotate tires. (See footnote +.)

83 000 km (50,000 mi)

Change automatic transmission fluid and filter.

Manual transmission fluid does not require change.

87 500 km (52,500 mi)

    • Change engine oil and filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote +.)
    • Inspect rear axle fluid level and add fluid as needed.
    • Rotate tires. (See footnote +.)

100 000 km (60,000 mi)

    • Change engine oil and filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate chassis components (or every 12  months, whichever occurs first). (See footnote +.)
    • Inspect rear axle fluid level and add fluid as needed. Change axle fluid if the vehicle is driven in high-speed (above 40 mph or 70 km/h) conditions for extended periods of time.
    • Clean and repack the front wheel bearings (or at each brake relining, whichever occurs first).
    • Rotate tires. (See footnote +.)
    • Inspect engine accessory drive belt.
        This is an Emission Control Service.
    • Replace fuel filter.
        This is an Emission Control Service. (See footnote @.)
    • Inspect shields and underhood insulation for damage or looseness. Adjust or replace as required.
        This is a Noise Emission Control Service. Applicable only to vehicles sold in the United States.
    • Inspect Evaporative Control system. Inspect all fuel and vapor lines and hoses for proper hook-up, routing and condition. Inspect that the purge valve works properly, if equipped. Replace as needed.
        This is an Emission Control Service. (See footnote @.)

112 500 km (67,500 mi)

    • Change engine oil and filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote +.)
    • Inspect rear axle fluid level and add fluid as needed.
    • Rotate tires. (See footnote +.)

125 000 km (75,000 mi)

    • Change engine oil and filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote +.)
    • Inspect rear axle fluid level and add fluid as needed.
    •  Inspect shields and underhood insulation for damage or looseness. Adjust or replace as required.
        This is a Noise Emission Control Service. Applicable only to vehicles sold in the United States.
    • Rotate tires. (See footnote +.)

137 500 km (82,500 mi)

    • Change engine oil and filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote +.)
    • Inspect rear axle fluid level and add fluid as needed.
    • Rotate tires. (See footnote +.)

150 000 km (90,000 mi)

    • Change engine oil and filter (or every 12  months, whichever occurs first). This is an Emission Control Service.
    • Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote +.)
    • Inspect rear axle fluid level and add fluid as needed. Change axle fluid if the vehicle is driven in high-speed (above 40 mph or 70 km/h) conditions for extended periods of time.
    • Clean and repack the front wheel bearings (or at each brake relining, whichever occurs first).
    • Replace fuel filter. This is an Emission Control Service. (See footnote +.)
    • Inspect shields and underhood insulation for damage or looseness. Adjust or replace as required.
        This is a Noise Emission Control Service. Applicable only to vehicles sold in the United States.
    • Rotate tires. (See footnote +.)

162 500 km (97,500 mi)

    • Change engine oil and filter (or every 12 months, whichever occurs first).
        This is an Emission Control Service.
    • Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote #.)
    • Inspect rear axle fluid level and add fluid as needed.
    • Rotate tires.(See footnote +.)

166 000 km (100,000 mi)

    • Inspect spark plug wires.
        This is an Emission Control Service.
    • Replace spark plugs.
        This is an Emission Control Service.
    • Change automatic transmission fluid and filter.
        Manual transmission fluid does not require change.

240 000 km (150,000 mi)

    • Drain, flush and refill the cooling system (or every 60 months since the last service, whichever comes first).
    • Inspect the hoses.
    • Clean the following components:
       - The radiator
       - The condenser
       - The pressure cap
       - The neck
    • Pressure test the cooling system and the pressure cap.
        This is an Emission Control Service.

Maintenance Schedule Diesel

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 section, keep in mind the conditions under which the vehicle is operated, and adjust the maintenance intervals accordingly.

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.

Selecting The Right Schedule

First you will need to decide which of the two schedules is right for your vehicle. Diesel engine vehicles have different maintenance requirements than gasoline engines. If your vehicle has a diesel engine, follow the schedule designated for diesel engines only.

Short Trip/City Definition - Diesel Engines

Follow the Short Trip/City Scheduled Maintenance only if any one of the following conditions is true for your vehicle:

    • Most trips are less than 8 - 16 km (5 - 10 miles).
        This is particularly important when the outside temperature is below 0°C (32°F).
    • Most trips include extensive idling (such as frequent driving in stop-and-go traffic).
    • The vehicle is operated in dusty areas or off-road frequently.
    • Trailer towing or using a carrier on top of the vehicle frequently.
    • The vehicle is used for delivery service, police, taxi, or other commercial application.

These conditions cause engine oil to break down sooner.

Short Trip/City Summary - Diesel Engines

The following intervals only summarize maintenance schedules. Be sure to follow the complete scheduled maintenance. Refer to Maintenance Schedule - Short Trip/City .

Every 4 000 Kilometers (2, 500 Miles)

    • Engine Oil and Filter Change (or 3 months, whichever comes first)
    • Chassis Lubrication (or 3 months, whichever comes first)
    • Drive Axle Service (or 3 months, whichever comes first)

Every 12 000 Kilometers (7, 500 Miles)

Tire Rotation

Every 16 000 Kilometers (10, 000 Miles)

    • Shields And Underhood Insulation Inspection.
    • Thermostatically Controlled Engine Cooling Fan Check (or every 12 months, whichever occurs first)
    • Air Intake System Inspection

Every 12 000 Kilometers (7, 500 Miles)

Tire Rotation

Every 24 000 Kilometers (15, 000 Miles)

Front Wheel Bearing Repack (RWD only) (or at each brake relining)

Every 40 000 Kilometers (25, 000 Miles)

Fuel Cap Replacement (If driving in dusty conditions)

Every 48 000 Kilometers (30, 000 Miles)

Fuel Filter Replacement

Every 80 000 Kilometers (50, 000 Miles)

Automatic Transmission Service

Every 96 000 Kilometers (60, 000 Miles)

    • Crankcase Depression Regulator Valve (CDRV) System Check
    • Engine Accessory Drive Belt Inspection
    • Exhaust Gas Recirculation (EGR) System Inspection (if equipped)

Every 240 000 Kilometers (150, 000 Miles)

Cooling System Service (or every 60 months, whichever occurs first)

Long Trip/Highway Definition - Diesel Engines

Follow this scheduled maintenance only if none of the conditions from the Short Trip/City Scheduled Maintenance is true. Do not use this schedule if one of the following conditions apply:

    • The vehicle is used for towing trailers.
    • The vehicle is driven in a dusty area.
    • The vehicle is used off of paved roads.

Driving a vehicle with a fully warmed engine under highway conditions cause engine oil to break down slower.

Long Trip/Highway Summary - Diesel Engines

Follow the Long Trip/Highway maintenance schedule ONLY if none of the conditions from the Short Trip/City maintenance schedule is true.

The following intervals only summarize the Long Trip/Highway Maintenance Schedule.

Every 8 000 Kilometers (5, 000 Miles)

    • Engine Oil and Filter Change (or 12 every months, whichever comes first)
    • Chassis Lubrication (or every 12 months, whichever comes first)
    • Drive Axle Service

Every 8 000 Kilometers (5, 000 Miles) - Then Every 16 000 Kilometers (10, 000 Miles)

Tire Rotation

Every 16 000 Kilometers (10, 000 Miles)

    • Shields And Underhood Insulation Inspection.
    • Thermostatically Controlled Engine Cooling Fan Check (or every 12 months, whichever occurs first)
    • Air Intake System Inspection

Every 48 000 Kilometers (30, 000 Miles)

    • Front Wheel Bearing Repack (RWD only) (or at each brake relining)
    • Fuel Filter Replacement

Every 80 000 Kilometers (50, 000 Miles)

Automatic Transmission Service

Every 96 000 Kilometers (60, 000 Miles)

    • Crankcase Depression Regulator Valve (CDRV) System Check
    • Engine Accessory Drive Belt Inspection
    • Exhaust Gas Recirculation (EGR) System Inspection (if equipped)

Every 240 000 Kilometers (150, 000 Miles)

Cooling System Service (or every 60 months, whichever occurs first)