GM-GMC: GMC Yukon Denali Radiator drain, gmc yukon denali, 2003 yukon denali

Question
Hi,
I have a 2003 Yukon Denali XL and need to flush the radiator.....do you have any idea where the drain petcock is located?  Are there drain plugs in the block too or is the petcock at the low point in the system?

Thanks

Answer
hi,
the petcock is usually on the bottom passenger side of the radiator, there is no drain on the block. most of whats in the block is going to drain when you open that valve. if you need to flush the radiator i would suggest taking it to a shop because they have special machines and chemicals to clean out the system alot better then just draining and refilling would and will extend the life of your coolant and engine.