When to change the timing belt on 2010 Buick lucerne?

According to the 2010 Buick Lucerne owner's manual, the timing belt should be inspected at 100,000 miles or 10 years, whichever comes first. If the timing belt is found to be damaged or worn, it should be replaced immediately.

Here are the steps on how to change the timing belt on a 2010 Buick Lucerne:

1. Disconnect the negative battery terminal.

2. Remove the serpentine belt.

3. Remove the timing belt cover.

4. Loosen the timing belt tensioner and remove the timing belt.

5. Install the new timing belt.

6. Tighten the timing belt tensioner.

7. Reinstall the timing belt cover.

8. Reinstall the serpentine belt.

9. Reconnect the negative battery terminal.

It is important to note that changing the timing belt is a complex procedure and should only be performed by a qualified mechanic. If you are not comfortable performing this repair yourself, you should take your vehicle to a dealership or auto repair shop.