Cooling system access

[AugustF15]

Good afternoon,

 

In the process of my super flush, considering I have many more drains to do, I'd like to know if there's a cap directly on the radiator. So far I have only been able to gain access through the overflow tank. I have an 05 6.0 vortec gas, GMC 2500hd extended cab SLE. Do they not come with drain bolts and caps? I have had to use the lower hose, which hardly gets any coolant out of the system.

[shakenfake]

None that I know of no.

[txab]

Lower hose and block plugs is all there is.

 

I pull the upper radiator hose and flush through that for the block

[AugustF15]

44 minutes ago, txab said:

Lower hose and block plugs is all there is.

 

I pull the upper radiator hose and flush through that for the block

Where are those block plugs located?

[CamGTP]

There is one above the oil filter housing, it's used for the block heater.