Drain radiator in 2005 Chevy Colorado Pickup
It seems I was right, there is no cooling system drain plug on the 2005 Chevy Colorado pickup truck. Mine is the lowest model with manual transmission and 4 cylinder...not that that matters.
What I found was the recommendation to drain by removing the lower radiator hose. This sounds pretty messy to me.
Years ago, and many cars ago, I installed one of the "Back Flush" taps in the heater hose to flush the cooling system. Here I figured this was an improvement over draining and then filling and draining several times to get an almost complete change in coolant. So, I am thinking I will install a Back Flush. Any advice? What am I overlooking?