GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 Safari - 4WD 🢒 General Information 🢒 Maintenance and Lubrication 🢒 Maintenance Schedule - Long Trip/Highway

Important: Additional maintenance recommendations are in this subsection. Also refer to Owner Checks and Services , Explanation of Scheduled Services , Periodic Maintenance Inspection .

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 in this schedule up to 240 000 km (150,000 mi) should be performed after 240 000 km (150,000 mi) at the same intervals.

Footnotes

[Dagger] 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. GM, however, urges that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded.

# Lubricate the front suspension, the ball joints, the steering linkage, the park brake cable guides, and the brake pedal springs.

+ A good time to check your brakes is during tire rotation.

** Drive axle service. For information on the proper fluid and lubricants to use, refer to Fluid and Lubricant Recommendations .

    • Check fluid level and add fluid as needed.
    • Locking Differential: Drain the fluid and refill at first engine oil change.

12 500 km (7,500 mi)

    • Change the engine oil and the filter (or every 12 months, whichever occurs first). This is an Emission Control Service. [Dagger]
    • Lubricate the chassis components (or every 12 months, whichever occurs first). #
    • Check the front/rear axle fluid level. Add fluid as needed. **
    • Check the constant velocity joints and the axle seals for leaks.
    • Rotate the tires. +

25 000 km (15,000 mi)

    • Change the engine oil and the filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate the chassis components (or every 12 months, whichever occurs first). #
    • Check the front/rear axle fluid level. Add fluid as needed. **
    • Check the constant velocity joints and the axle seals for leaks.
    • Change the automatic transmission fluid and filter if the vehicle is driven under one or more of the following (severe service 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 your vehicle under any of these conditions, the fluid and filter change should be changed every 83 000 km (50,000 mi).
    • Rotate the tires. +

37 500 km (22,500 mi)

    • Change the engine oil and the filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate the chassis components (or every 12 months, whichever occurs first). #
    • Check the front/rear axle fluid level. Add fluid as needed. **
    • Check the constant velocity joints and the axle seals for leaks.
    • Rotate the tires. +

50 000 km (30,000 mi)

    • Change the engine oil and the filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate the chassis components (or every 12 months, whichever occurs first). #
    • Check the front/rear axle fluid level. Add fluid as needed. **
    • Check the constant velocity joints and the axle seals for leaks.
    • Clean and repack the front wheel bearings (2WD only) (or at each brake relining, whichever occurs first).
    • Change the automatic transmission fluid and filter if the vehicle is driven under one or more of the following (severe service 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 your vehicle under any of these conditions, the fluid and filter change should be changed every 83 000 km (50,000 mi).
    • Rotate the tires. +
    • Replace the engine air cleaner filter. This is an Emission Control Service.
    • Replace the fuel filter. This is an Emission Control Service. [Dagger]

62 500 km (37,500 mi)

    • Change the engine oil and the filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate the chassis components (or every 12 months, whichever occurs first). #
    • Check the front/rear axle fluid level. Add fluid as needed. **
    • Check the constant velocity joints and the axle seals for leaks.
    • Rotate the tires. +

75 000 km (45,000 mi)

    • Change the engine oil and the filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate the chassis components (or every 12 months, whichever occurs first). #
    • Check the front/rear axle fluid level. Add fluid as needed. **
    • Check the constant velocity joints and the axle seals for leaks.
    • Change the automatic transmission fluid and filter if the vehicle is driven under one or more of the following (severe service 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 your vehicle under any of these conditions, the fluid and filter change should be changed every 83 000 km (50,000 mi).
    • Rotate the tires. +

83 000 km (50,000 mi)

    • Change the automatic transmission fluid and the filter (non-severe service conditions).
    • Change the transfer case fluid.

87 500 km (52,500 mi)

    • Change the engine oil and the filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate the chassis components (or every 12 months, whichever occurs first). #
    • Check the front/rear axle fluid level. Add fluid as needed. **
    • Check the constant velocity joints and the axle seals for leaks.
    • Rotate the tires. +

100 000 km (60,000 mi)

    • Change the engine oil and the filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate the chassis components (or every 12 months, whichever occurs first). #
    • Check the front/rear axle fluid level. Add fluid as needed. **
    • Check the constant velocity joints and the axle seals for leaks.
    • Clean and repack the front wheel bearings (2WD only) (or at each brake relining, whichever occurs first).
    • Change the automatic transmission fluid and filter if the vehicle is driven under one or more of the following (severe service 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 your vehicle under any of these conditions, the fluid and filter change should be changed every 83 000 km (50,000 mi).
    • Rotate the tires. +
    • Inspect the engine accessory drive belt. This is an Emission Control Service. [Dagger]
    • Replace the engine air cleaner filter. This is an Emission Control Service.
    • Replace the fuel filter. This is an Emission Control Service. [Dagger]

112 500 km (67,500 mi)

    • Change the engine oil and the filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate the chassis components (or every 12 months, whichever occurs first). #
    • Check the front/rear axle fluid level. Add fluid as needed. **
    • Check the constant velocity joints and the axle seals for leaks.
    • Rotate the tires. +

125 000 km (75,000 mi)

    • Change the engine oil and the filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate the chassis components (or every 12 months, whichever occurs first). #
    • Check the front/rear axle fluid level. Add fluid as needed. **
    • Check the constant velocity joints and the axle seals for leaks.
    • Change the automatic transmission fluid and filter if the vehicle is driven under one or more of the following (severe service 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 your vehicle under any of these conditions, the fluid and filter change should be changed every 83 000 km (50,000 mi).
    • Rotate the tires. +

137 500 km (82,500 mi)

    • Change the engine oil and the filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate the chassis components (or every 12 months, whichever occurs first). #
    • Check the front/rear axle fluid level. Add fluid as needed. **
    • Check the constant velocity joints and the axle seals for leaks.
    • Rotate the tires. +

150 000 km (90,000 mi)

    • Change the engine oil and the filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate the chassis components (or every 12 months, whichever occurs first). #
    • Check the front/rear axle fluid level. Add fluid as needed. **
    • Check the constant velocity joints and the axle seals for leaks.
    • Clean and repack the front wheel bearings (2WD only) (or at each brake relining, whichever occurs first).
    • Change the automatic transmission fluid and filter if the vehicle is driven under one or more of the following (severe service 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 your vehicle under any of these conditions, the fluid and filter change should be changed every 83 000 km (50,000 mi).
    • Replace the air cleaner filter. This is an Emission Control Service.
    • Replace the fuel filter. This is an Emission Control Service [Dagger]
    • Rotate the tires. +

162 500 km (97,500 mi)

    • Change the engine oil and the filter (or every 12 months, whichever occurs first). This is an Emission Control Service.
    • Lubricate the chassis components (or every 12 months, whichever occurs first). #
    • Check the front/rear axle fluid level. Add fluid as needed. **
    • Check the constant velocity joints and the axle seals for leaks.
    • Rotate the tires. +

166 000 km (100,000 mi)

    • Inspect the spark plug wires.
    • Replace the spark plugs. This is an Emission Control Service. [Dagger]
    • Change the automatic transmission fluid and the filter (non-severe service conditions).
    • Change the transfer case fluid.
    • Inspect the positive crankcase ventilation (PCV) valve.
        This is an Emission Control Service.

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. This is an Emission Control Service. [Dagger]
       - The radiator
       - The condenser
       - The pressure cap
       - The neck
    • Pressure test the cooling system and the pressure cap.