GM Service Manual Online
For 1990-2009 cars only

The following schedules are for vehicles that:

    • Carry passengers and cargo within recommended limits. These limits are listed on the vehicle's Tire Loading Information Label located on the driver's door.
    • Are driven on reasonable road surfaces within legal driving limits.
    • Use the recommended fuel.

Selecting the Right Schedule

First you'll need to decide which of the two schedules is right for the vehicle. Here's how to decide which schedule to follow:

Short Trip/City Definition

Follow the Short Trip/City Maintenance Schedule if any one of these conditions is true for your vehicle:

    • Most trips are less than 5 to 10 miles (8 to 16 km). This is particularly important when outside temperatures are below freezing.
    • Most trips include extensive idling (such as frequent driving in stop-and-go traffic).
    • Most trips are through dusty areas.
    • The vehicle frequently tows a trailer or uses a carrier on top of the vehicle.
    • If the vehicle is used for delivery service, police, taxi or other commercial application.

Follow this schedule if the vehicle is operated under any of the previously listed conditions. These conditions cause engine oil to break down sooner.

Long Trip/Highway Definition

Follow this maintenance schedule ONLY if none of the conditions from the Short Trip/City Maintenance Schedule is true. Do NOT use this schedule if the vehicle is used for trailer towing, driven in a dusty area or used off paved roads.

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