Pontiac Problems? Ask a Mechanic for Answers ASAP
The radiator drain plug is located on the passenger's side, lower part of the radiator (click here for image). To gain access, remove the front lower splash shield (a few retainers around it's perimeter). Use a 1/4 inch square drive or a 3/16 inch hex drive to open the radiator drain valve. Pull the stem out of the radiator body. Please remember to leave a rating using the star rating system at the top of this page or accept the answer so I may be credited for this Q&A. You can ask follow-up questions any time, even after you rate or accept.