Where is the coolant petcock valve?

[jajehalbig]

I have a 1996 Chevy Tahoe 4D 4X4. I was hoping to drain, flush, and replace the coolant. But I can't seem to find the drain valve. Can anyone help me find this thing? Thanks!

 

[jajehalbig]

Okay. I've located the drain plug. It cannot be accessed or seen from underneath of the car. You have to remove the driver's side tire-well cover,
(alot of bolts) and then you can see it, and turn it by hand.

 

[Arcane]

You mean drain plug under the block?
Usually you need to use the plug on the bottom of the radiator to drain.

 

[98-Tahoe]

I just flushed my radiator on my 98 Tahoe and the drain plug was on the bottom of the radiator on the drivers side. Hard to get to and I broke the small handle on it. I turned it and nothing came out, so I kept trying to turn it with pliers because I thought I hadn't turned it all the way. I removed the whole radiator and stuck a water hose on it and big chunks of rust and debris came out. It turns out I did have the drain valve open but nothing was coming out because it was clogged. Had to buy a replacement plug for $5 but my radiator is super clean now.