How do you change the back 3 spark plugs on a 2003 Pontiac Grand Prix?

The engine must be tilted forward. Why are you changing spark plugs on a 2003 engine. These plugs do not need replacement until 100,000 miles. For more detailed directions, follow the instructions for changing the plugs in any 3800 engine in the grand prix '97 and up listed in the grand prix forum. Hope this helps. "G" You need to remove alternator, and undo forward engine support to get engine to go forward. It is a tight fit but it can be done. I even did it with just alternator removed. Have fun