At Least Once a Year. Buick Century 2003

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2003 🢒 Century 🢒 Maintenance Schedule 🢒 Maintenance Schedule 🢒 At Least Once a Year

Key Lock Cylinders Service

Lubricate the key lock cylinders with the lubricant specified in Part D.

Lubricate all hinges and latches, including those for the body doors, hood, secondary latch, pivots, spring anchor, release pawl, rear compartment, glove box door and console door. Part D tells you what to use. More frequent lubrication may be required when exposed to a corrosive environment.

Starter Switch Check

Caution: When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.

Before you start, be sure you have enough room around the vehicle.
Firmly apply both the parking brake and the regular brake. See Parking Brake if necessary.

Do not use the accelerator pedal, and be ready to turn off the engine immediately if it starts.

Try to start the engine in each gear. The starter should work only in PARK (P) or NEUTRAL (N). If the starter works in any other position, your vehicle needs service.

Automatic Transaxle Shift Lock Control System Check

Caution: When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.

Before you start, be sure you have enough room around the vehicle. It should be parked on a level surface.
Firmly apply the parking brake. See Parking Brake if necessary.

Be ready to apply the regular brake immediately if the vehicle begins to move.

With the engine off, turn the key to the RUN position, but do not start the engine. Without applying the regular brake, try to move the shift lever out of PARK (P) with normal effort. If the shift lever moves out of PARK (P), your vehicle needs service.

Ignition Transaxle Lock Check

While parked, and with the parking brake set, try to turn the ignition key to LOCK in each shift lever position.

•	The key should turn to LOCK only when the shift lever is in PARK (P).

•	The key should come out only in LOCK.

Parking Brake and Automatic Transaxle Park (P) Mechanism Check

Caution: When you are doing this check, the vehicle could begin to move. You or others could be injured and property could be damaged. Make sure there is room in front of the vehicle in case it begins to roll. Be ready to apply the regular brake at once should the vehicle begin to move.

Park on a fairly steep hill, with the vehicle facing downhill. Keeping your foot on the regular brake, set the parking brake.

•	To check the parking brake's holding ability: With the engine running and transaxle in NEUTRAL (N), slowly remove foot pressure from the regular brake pedal. Do this until the vehicle is held by the parking brake only.

•	To check the PARK (P) mechanism's holding ability: With the engine running, shift to PARK (P). Then release the parking brake followed by the regular brake.

Underbody Flushing Service

At least every spring, use plain water to flush any corrosive materials from the underbody. Take care to clean thoroughly any areas where mud and other debris can collect.