GM Service Manual Online
For 1990-2009 cars only

The pressure recommended for all models is carefully calculated to provide the following:

    • A comfortable ride
    • Responsive steering
    • Maximum tread wear
    • Extended tire life
    • Resistance to bruise

Check tire pressure monthly or before any extended trip. For best results, adhere to the following conditions:

    • The tires should be cold
    • Let the vehicle sit for three hours or more
    • Drive the car for less than one mile

Set the tire pressure to the proper specification. Refer to the Inflation Pressure Conversion Table in Tire and Wheel Specifications .

Place valve caps or extensions on the valves in order to keep dust and water out.

Incorrect pressure can affect driving conditions.

    • Higher than recommended pressure can cause the following:
       - A hard ride
       - Tire bruising or carcass damage
       - Rapid tread wear at the center of the tire
    • Lower than recommended pressure can cause the following:
       - Tire squeal on turns
       - Hard steering
       - Rapid and uneven wear on the edge of the thread
       - Tire rim bruises and rupture
       - Tire cord breakage
       - High tire temperatures
       - Reduced handling
       - High fuel consumption
       - Soft ride
    • Unequal pressure on the same axle can cause the following:
       - Uneven braking
       - Steering lead
       - Reduced handling
       - Torque steer