GM Service Manual Online
For 1990-2009 cars only

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

Footnotes

[Dagger] The 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.

+ A good time to check brakes is during tire rotation. Inspect the complete system. Inspect brake lines and hoses for proper hook-up, binding, leaks, cracks, chafing, etc. Inspect disc brake pads for wear and rotors for surface condition. Also inspect drum brake linings for wear and cracks. Inspect other brake parts, including drums, wheel cylinders, calipers parking brake, etc. Check parking brake adjustment. You may need to have your brakes inspected more often if your driving habits or conditions result in frequent braking.

12 500 km (7,500 Miles)

    • Change engine oil and filter (or every 7.5 months, whichever occurs first).
    • Rotate tires. Refer to Explanation of Scheduled Services for proper rotation pattern and additional information. See footnote +.
    • Inspect the locking front hubs (if equipped) for correct operation (or every 3 months, whichever occurs first). Repair or replace if necessary.

25 000 km (15,000 Miles)

    • Change engine oil and filter (or every 7.5 months, 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 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 vehicle is not used under any of these conditions, change the fluid and filter every 100,000 miles (166 000 km).
    • Rotate tires. Refer to Explanation of Scheduled Services for proper rotation pattern and additional information. See footnote +.
    • Inspect the locking front hubs (if equipped) for correct operation (or every 3 months, whichever occurs first). Repair or replace as necessary.
    • Inspect valve lash and adjust if necessary.
    • Check engine idle speed and adjust it to underhood label specifications.[Dagger]
    • Inspect propeller shafts and U-joints for looseness and damage (or every 15 months, whichever occurs first). Inspect more frequently if used off-road or for pulling a trailer. Tighten U-joint flange bolts if necessary.

37 500 km (22,500 Miles)

    • Change engine oil and filter (or every 7.5 months, whichever occurs first).
    • Rotate tires. Refer to Explanation of Scheduled Services for proper rotation pattern and additional information. See footnote +.
    • Inspect the locking front hubs (if equipped) for correct operation (or every 3 months, whichever occurs first). Repair or replace if necessary.

50 000 km (30,000 Miles)

    • Change engine oil and filter (or every 7.5 months, whichever occurs first).
    • 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 vehicle is not used under any of these conditions, change the fluid and filter every 100,000 miles (166 000 km).
    • Rotate Tires. Refer to Explanation of Scheduled Services for proper rotation pattern and additional information. See footnote +.
    • Inspect engine accessory drive belts (or every 24 months, whichever occurs first).
    • Drain, flush and refill cooling system (or every 30 months, whichever occurs first). Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test the cooling system and pressure cap. See footnote [Dagger].
    • Replace spark plugs
    • Replace air cleaner filter
    • Inspect fuel tank, cap and lines for damage or leaks. inspect fuel cap gasket for any damage. Replace parts as needed. See footnote [Dagger]
    • Change manual transmission fluid.
    • Change transfer case fluid.
    • Change differential fluid.
    • Replace fuel filter (or every 30 months, whichever occurs first, or sooner if filter is clogged. See footnote [Dagger]
    • Inspect the locking front hubs (if equipped) for correct operation (or every 3 months, whichever occurs first). Repair or replace if necessary.
    • Inspect the valve lash and adjust if necessary.
    • Check engine idle speed and adjust it to underhood label specifications. See footnote [Dagger]
    • Inspect propeller shafts and U-joints for looseness and damage (or every 15 months, whichever occurs first). Inspect more frequently if used off-road or for pulling a trailer. Tighten U-joint flange bolts if necessary.

62 500 km (37,500 Miles)

    • Change engine oil and filter (or every 7.5 months, whichever occurs first).
    • Rotate tires. Refer to Explanation of Scheduled Services for proper rotation pattern and additional information. See footnote +.
    • Inspect the locking front hubs (if equipped) for correct operation (or every 3 months, whichever occurs first). Repair or replace if necessary.

75 000 km (45,000 Miles)

    • Change engine oil and filter (or every 7.5 months, 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 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 vehicle is not used under any of these conditions, change the fluid and filter every 100,000 miles (166 000 km).
    • Rotate tires. Refer to Explanation of Scheduled Services for proper rotation pattern and additional information. See footnote +.
    • Inspect the locking front hubs (if equipped) for correct operation (or every 3 months, whichever occurs first). Repair or replace if necessary.
    • Inspect the valve lash and adjust if necessary.
    • Check engine idle speed and adjust it to underhood label specifications. See footnote [Dagger].
    • Inspect propeller shafts and U-joints for looseness and damage (or every 15 months, whichever occurs first). Inspect more frequently if used off-road or for pulling a trailer. Tighten U-joint flange bolts if necessary.

83 000 km (50,000 Miles)

Replace Positive Crankcase Ventilation (PCV) valve. Replace any worn, plugged or collapsed hoses.

87 500 km (52,500 Miles)

    • Change engine oil and filter (or every 7.5 months, whichever occurs first).
    • Rotate tires. Refer to Explanation of Scheduled Services for proper rotation pattern and additional information. See footnote +.
    • Inspect the locking front hubs (if equipped) for correct operation (or every 3 months, whichever occurs first). Repair or replace if necessary.

100 000 km (60,000 Miles)

    • Change engine oil and filter (or every 7.5 months, whichever occurs first).
    • 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 vehicle is not used under any of these conditions, change the fluid and filter every 100,000 miles (166 000 km).
    • Rotate tires. Refer to Explanation of Scheduled Services for proper rotation pattern and additional information. See footnote +.
    • Inspect engine accessory drive belts (or every 24 months, whichever occurs first).
    • Drain, flush and refill cooling system (or every 30 months, whichever occurs first). Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test the cooling system and pressure cap. See footnote [Dagger].
    • Replace spark plugs.
    • Replace air cleaner filter.
    • Inspect fuel tank, cap and lines and any hoses for damage. Replace fuel tank cap gasket. See footnote [Dagger].
    • Change the manual transmission fluid.
    • Change transfer case fluid.
    • Change differential fluid.
    • Replace fuel filter (or every 30 months, whichever occurs first). [Dagger]
    • Inspect the locking front hubs (if equipped) for correct operation (or every 3 months, whichever occurs first). Repair or replace if necessary.
    • Inspect the valve lash and adjust if necessary.
    • Check engine idle speed and adjust it to underhood label specifications. See footnote [Dagger]
    • Adjust engine timing to underhood label specifications. Inspect the inside and outside of the distributor cap and rotor for cracks, carbon tracking and corrosion. Clean or replace as needed.
    • Inspect emission system hoses and replace as necessary. See footnote [Dagger]
    • Inspect propeller shafts and U-joints for looseness and damage (or every 15 months, whichever occurs first). Inspect more frequently if used off-road or for pulling a trailer. Tighten U-joint flange bolts if necessary.
    • Inspect the underhood wiring harness for loose connections, charred wires and damage (or every 60 months, whichever occurs first). See footnote [Dagger]
    • Replace the camshaft timing belt. See footnote [Dagger].
    • Replace spark plug wires (or every 60 months whichever occurs first).
    • Drain, refill and bleed the brake system.

112 500 km (67,500 Miles)

    • Change engine oil and filter (or every 7.5 months, whichever occurs first).
    • Rotate tires. Refer to Explanation of Scheduled Services for proper rotation pattern and additional information. See footnote +.
    • Inspect the locking front hubs (if equipped) for correct operation (or every 3 months, whichever occurs first). Repair or replace if necessary.

125 000 km (75,000 Miles)

    • Change engine oil and filter (or every 7.5 months, 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 vehicle is not used under any of these conditions, change the fluid and filter every 100,000 miles (166 000 km).
    • Rotate tires. Refer to Explanation of Scheduled Services for proper rotation pattern and additional information. See footnote +.
    • Inspect the locking front hubs (if equipped) for correct operation (or every 3 months, whichever occurs first). Repair or replace as necessary.
    • Inspect the valve lash and adjust if necessary.
    • Check engine idle speed and adjust it to underhood label specifications. See footnote [Dagger].
    • Inspect propeller shafts and U-joints for looseness and damage (or every 15 months, whichever occurs first). Inspect more frequently if used off-road or for pulling a trailer. Tighten U-joint flange bolts if necessary.

137 500 km (82,500 Miles)

    • Change engine oil and filter (or every 7.5 months, whichever occurs first).
    • Rotate tires. Refer to Explanation of Scheduled Services for proper rotation pattern and additional information. See footnote +.
    • Inspect the locking front hubs (if equipped) for correct operation (or every 3 months, whichever occurs first). Repair or replace as necessary.

150 000 km (90,000 Miles)

    • Change engine oil and filter (or every 7.5 months, whichever occurs first).
    • For two-wheel-drive vehicles only: Clean and repack the front wheel bearings (or at each brake relining, whichever occurs first).
    • Inspect engine accessory drive belts (or every 24 months, whichever occurs first).
    • Replace automatic transmission fluid hose (or every 45 months, whichever occurs first).
    • Inspect camshaft timing belt. See footnote [Dagger].
    • 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 vehicle is not used under any of these conditions, change the fluid and filter every 100,000 miles (166 000 km).
    • Drain, flush and refill cooling system (or every 30 months, whichever occurs first). Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test the cooling system and pressure cap. See footnote [Dagger].
    • Replace spark plugs.
    • Replace air cleaner filter.
    • Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap gasket for any damage. Replace parts as needed. An Emission Control Service. See footnote [Dagger].
    • Change the manual transmission fluid.
    • Change transfer case fluid.
    • Change differential fluid.
    • Replace fuel filter (or every 3 months, whichever occurs first). See footnote [Dagger].
    • Inspect the locking front hubs (if equipped) for correct operation (or every 3 months, whichever occurs first). Repair or replace if necessary.
    • Inspect the valve lash and adjust if necessary.
    • Check engine idle speed and adjust it to underhood label specifications. See footnote [Dagger].
    • Inspect propeller shafts and U-joints for looseness and damage (or every 15 months, whichever occurs first). Inspect more frequently if used off-road or for pulling a trailer. Tighten U-joint flange bolts if necessary.
    • Rotate tires. Refer to Explanation of Scheduled Services for proper rotation pattern and additional information. See footnote +.

162 500 km (97,500 Miles)

    • Change engine oil and filter (or every 7.5 months, whichever occurs first).
    • Rotate tires. Refer to Explanation of Scheduled Services for proper rotation pattern and additional information. See footnote +.
    • Inspect the locking front hubs (if equipped) for correct operation (or every 3 months, whichever occurs first). Repair or replace if necessary.

166 000 km (100,000 Miles)

    • Change automatic transmission fluid and filter (severe conditions).
    • Replace Positive Crankcase Ventilation (PCV) valve. Replace any worn, plugged or collapsed hoses.
    • Inspect Exhaust Gas Recirculation (EGR) system.
    • Inspect fuel injector.
    • Replace evaporative emissions canister.