I just performed another coolant change on my 2001 Pontiac Grand Prix GTP and took pictures of the process this time to create a guide to help others.
The procedure should be similar for all GM cars with the 3800 Series II 3.8L V6 engine including the Buick Regal, Chevy Impala, Monte Carlo, and Bonneville.
Here's the guide -
Cheers, Paul