drivers side bottom right of radiator remove shield and look for plug
The radiator petcock drain on a 1999 Pontiac Bonneville is on the bottom of the radiator. Look for a small black plug that looks like the plug found on a thermos or cooler.
Look at the bottom or rear of the radiator
The 1991 Pontiac Grand Am radiator drain plug can be found on the bottom of the radiator. The radiator drain plug will be in the center of the radiator bottom.
on the radiator
In order to drain the radiator on a 2004 Pontiac GTO it is necessary to pull the lower radiator hose off. There is not a separate drain plug on this radiator.
The 1992 V-6 Pontiac Sunbird radiator drain plug, is located on the bottom of the radiator. The drain plug can be removed with a 5/8 socket.
Look at the lower or rear of radiator
It is on the bottom of the radiator on the drivers side.
There should be one on the left side bottom of the radiator. There probably isn't going to be one. Maufacturer's started eliminating the drain plug to save on production costs in the late eighties.
LOOK TOWARD THE REAR OF THE OIL PAN.
Bottom left hand corner of radiator,opposite side of the lower radiator hose.
Should be at the bottom of the radiator logically...