GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Jimmy - 4WD 🢒 General Information 🢒 Maintenance and Lubrication 🢒 Maintenance Schedule - Long Trip/Highway

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

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. We, however, urge that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded.

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

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

** Drive axle service.

    • Locking Differential--Drain fluid and refill at first engine oil change. At subsequent oil changes, check fluid level and add fluid as needed at every oil change.
    • Standard Differential--Check fluid level and add fluid as needed at every oil change.

12 500 km (7,500 miles)
    • Change engine oil and filter (or every 12 months, whichever occurs first).
        An Emission Control Service.
    • Lubricate chassis components (or every 12 months, which ever occurs first). See footnote #.
    • Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. See footnote **.
    • Rotate tires. See footnote +.

25 000 km (15,000 miles)
    • Change engine oil and filter (or every 12 months, whichever occurs first).
        An Emission Control Service.
    • Lubricate chassis components (or every 12 months, which ever occurs first). See footnote #.
    • Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. See footnote **.
    • Change automatic transmission fluid and filter if the vehicle is mainly driven under one or more of these conditions:
       - In heavy city traffic where the outside temperature regularly reaches 32°C (90°F) or higher.
       - In hilly or mountainous terrain.
       - When doing frequent trailer towing.
       - Uses such as found in taxi, police or delivery service.
       - If the vehicle is not used in any of these conditions, change the fluid and filter every 83 000 km (50,000 miles).
    • Rotate tires. See footnote +.

37 500 km (22,500 miles)
    • Change engine oil and filter (or every 12 months, whichever occurs first).
        An Emission Control Service.
    • Lubricate chassis components (or every 12 months, which ever occurs first). See footnote #.
    • Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. See footnote **.
    • Rotate tires. See footnote +.

50 000 km (30,000 miles)
    • Change engine oil and filter (or every 12 months, whichever occurs first).
        An Emission Control Service.
    • Lubricate chassis components (or every 12 months, which ever occurs first). See footnote #.
    • Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. See footnote **.
    • For Two-Wheel-Drive vehicles only: Clean and repack the front wheel bearings ( or at each brake relining, whichever occurs first).
    • Change automatic transmission fluid and filter if the vehicle is mainly driven under one or more of these conditions:
       - In heavy city traffic where the outside temperature regularly reaches 32°C (90°F) or higher.
       - In hilly or mountainous terrain.
       - When doing frequent trailer towing.
       - Uses such as found in taxi, police or delivery service.
       - If the vehicle is not used in any of these conditions, change the fluid and filter every 83 000 km (50,000 miles).
    • Rotate tires. See footnote +.
    • Replace fuel filter.
        An Emission Control Service. See footnote [Dagger].
    • Replace air cleaner filter.
        An Emission Control Service.

62 500 km (37,500 miles)
    • Change engine oil and filter (or every 12 months, whichever occurs first).
        An Emission Control Service.
    • Lubricate chassis components (or every 12 months, which ever occurs first). See footnote #.
    • Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. See footnote **.
    • Rotate tires. See footnote +.

75 000 km (45,000 miles)
    • Change engine oil and filter (or every 12 months, whichever occurs first).
        An Emission Control Service.
    • Lubricate chassis components (or every 12 months, which ever occurs first). See footnote #.
    • Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. See footnote **.
    • Change automatic transmission fluid and filter if the vehicle is mainly driven under one or more of these conditions:
       - In heavy city traffic where the outside temperature regularly reaches 32°C (90°F) or higher.
       - In hilly or mountainous terrain.
       - When doing frequent trailer towing.
       - Uses such as found in taxi, police or delivery service.
       - If the vehicle is not used in any of these conditions, change the fluid and filter every 83 000 km (50,000 miles).
    • Rotate tires. See footnote +.

83 000 km (50,000 miles)

If the vehicle has not been used under the severe service conditions listed previously and, therefore have not changed the automatic transmission fluid, change both the fluid and the filter.

87 500 km (52,500 miles)
    • Change engine oil and filter (or every 12 months, whichever occurs first).
        An Emission Control Service.
    • Lubricate chassis components (or every 12 months, which ever occurs first). See footnote #.
    • Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. See footnote **.
    • Rotate tires. See footnote +.

100 000 km (60,000 miles)
    • Change engine oil and filter (or every 12 months, whichever occurs first).
        An Emission Control Service.
    • Lubricate chassis components (or every 12 months, which ever occurs first). See footnote #.
    • Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. See footnote **.
    • For Two-Wheel-Drive vehicles only: Clean and repack the front wheel bearings (or at each brake relining, whichever occurs first).
    • Change automatic transmission fluid and filter if the vehicle is mainly driven under one or more of these conditions:
       - In heavy city traffic where the outside temperature regularly reaches 32°C (90°F) or higher.
       - In hilly or mountainous terrain.
       - When doing frequent trailer towing.
       - Uses such as found in taxi, police or delivery service.
       - If the vehicle is not used in any of these conditions, change the fluid and filter every 83 000 km (50,000 miles).
    • Rotate tires. See footnote +.
    • Inspect engine accessory drive belt.
        An Emission Control Service.
    • Replace fuel filter (except 2200 code 5 L4 engine)..
        An Emission Control Service. See footnote [Dagger].
    • Replace air cleaner filter.
        An Emission Control Service.

112 500 km (67,500 miles)
    • Change engine oil and filter (or every 12 months, whichever occurs first).
        An Emission Control Service.
    • Lubricate chassis components (or every 12 months, which ever occurs first). See footnote #.
    • Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. See footnote **.
    • Rotate tires. See footnote +.

125 000 km (75,000 miles)
    • Change engine oil and filter (or every 12 months, whichever occurs first).
        An Emission Control Service.
    • Lubricate chassis components (or every 12 months, which ever occurs first). See footnote #.
    • Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. See footnote **.
    • Change automatic transmission fluid and filter if the vehicle is mainly driven under one or more of these conditions:
       - In heavy city traffic where the outside temperature regularly reaches 32°C (90°F) or higher.
       - In hilly or mountainous terrain.
       - When doing frequent trailer towing.
       - Uses such as found in taxi, police or delivery service.
       - If the vehicle is not used in any of these conditions, change the fluid and filter every 83 000 km (50,000 miles).
    • Rotate tires. See footnote +.

137 500 km (82,500 miles)
    • Change engine oil and filter (or every 12 months, whichever occurs first).
        An Emission Control Service.
    • Lubricate chassis components (or every 12 months, which ever occurs first). See footnote #.
    • Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. See footnote **.
    • Rotate tires. See footnote +.

150 000 km (90,000 miles)
    • Change engine oil and filter (or every 12 months, whichever occurs first).
        An Emission Control Service.
    • Lubricate chassis components (or every 12 months, which ever occurs first). See footnote #.
    • Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. See footnote **.
    • For Two-Wheel-Drive vehicles only: Clean and repack the front wheel bearijngs ( or at each brake relining, whichever occurs first).
    • Change automatic transmission fluid and filter if the vehicle is mainly driven under one or more of these conditions:
       - In heavy city traffic where the outside temperature regularly reaches 32°C (90°F) or higher.
       - In hilly or mountainous terrain.
       - When doing frequent trailer towing.
       - Uses such as found in taxi, police or delivery service.
       - If the vehicle is not used in any of these conditions, change the fluid and filter every 83 000 km (50,000 miles).
       - Replace fuel filter.
       - An Emission Control Service.
    • Replace air cleaner filter.
        An Emission Control Service.
    • Rotate tires. See footnote +.

162 500 km (97,500 miles)
    • Change engine oil and filter (or every 12 months, whichever occurs first).
        An Emission Control Service.
    • Lubricate chassis components (or every 12 months, which ever occurs first). See footnote #.
    • Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. See footnote **.
    • Rotate tires. See footnote +.

166 000 km (100,000 miles)
    • Inspect spark plug wires.
        An Emission Control Service.
    • Replace spark plugs.
        An Emission Control Service.
    • If the vehicle has not been used under the severe service conditions listed previously and, therefore have not changed the automatic transmission fluid, change both the fluid and the filter.
    • Inspect the Positive Crankcase Ventilation (PCV) valve (4.3L V6 engine only).
        An Emission Control Service.

240 000 km (150,000 miles)

Drain, flush and refill the cooling system (or every 60 months since the last cooling system service, whichever occurs first). Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test the cooling system and pressure cap.

An Emission Control Service.