2. Loosen the tensioner pulley bolt. This will allow you to remove the old belt.
3. Remove the old belt from the pulleys.
4. Install the new belt around the pulleys, starting with the tensioner pulley.
5. Tighten the tensioner pulley bolt.
6. Check the belt tension. The belt should be snug, but not too tight.
7. Start the engine and check for any unusual noises or vibrations.
Here is a diagram of the serpentine belt routing for a 2004 Pontiac Grand Prix:
[Image of serpentine belt routing diagram]
