It is on the bottom of the engine block, just a normal hex bolt.
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
LOOK TOWARD THE REAR OF THE OIL PAN.
drivers side bottom right of radiator remove shield and look for plug
Most vehicles do not.
On the lower driver side of the radiator!
where is the plug to drain the oil in a 2005 Pontiac vibe
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.
engine side of radiator, toward the bottom, drivers side.
its below the steering wheel towards the right, its a litle plug-in
0.060 inch {1.52mm}
Standard V-6 will be 0.06