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It's called the bottom radiator hose there is no drain per say.
The bottom inside corner of the radiator.
I have a 2007 GMC Sierra 5.3L V8...and I just changed my oil and found the drain plug on the opposite side of where the Oil Filter is. The plug is a 13MM.
The 2007 GMC Sierra Truck is a beautiful vehicle that features a V-8 high performance engine. The mileage on this truck is approximately 14 miles per gallon in the city.
It seems these 2007-2013 GM lambar do not have drain plug.
There is no drain cock on the '07 G6 GT. The easiest way to drain is from the water pump connection at the bottom passenger side of the radiator.
Remove the oil pan drain plug to drain the oil. Remove the lower radiator hose to drain the coolant.
The GMC Sierra 3500 truck was first created in 1998 for the 1999 release. The GMC Sierra 3500 version from 1999 to 2007 is considered the classic version.
Using a Sierra Classic 1500 Series Truck I came up with 6.1 quarts
Look in over the right front tire. There is a red knob near the lower read face of the radiator behind the wiring loom. Turn left to open the amount you wish to drain the radiator. Tighten by turning right to stop flow of coolant. Space is tight to get to the red knob.
The cast of Jessica Sierra Superstar - 2007 includes: Jessica Sierra
If you mean drain valve, it is on the left side tank at the very bottom. It is on the back side of tank and drains through the radiator lower mount bracket.