You will find one on each side of the block, close to the oil pan, near the motor mounts. A 14mm socket will fit the plugs.
Open the drain valve on the side of the engine block.
in the middle of the engine block under the whatchamacallit in the middle of the engine block under the whatchamacallit
On the bottom of the engine. The drain plug is screwed into the oil pan.
under the engine Bottom of the oil pan.
Bottom of engine on the oil pan.
Chevy did not have a 350 in 2001 engine options were 5.3, 6.0. or big block
It is on the rear of the engine block above the drain plug.
on top of the starter of front of your engine block
Attached to the engine block inside the oil pan.
I am trying to drain old antifreeze and replace with new and cannot figure out how to remove the radiator plug on my 2001 Chevy impala 3400V6 engine?
There is a drain valve at the bottom of the radiator and you will have to remove the drain bolt in the engine block.
There are two engine block drain plugs. One is just above the oil filter and to the right a little. And the other is below the upstream O2 sensor. I'm not sure if all of the plugs are the same size, but I used a 14 on for my 2001 Malibu. Hope that helps. Also, the best way to get to the drain plug near the exhaust pipe and O2 sensor is to remove the drive belt tensioner pulley and remove the plug from above and not below.