Bottom of the engine on the oil pan.
The oil drain plug on a 2003 GMC Yukon is underneath the motor. It is on the same side of the engine compartment that the battery is on.
Look atr bottom or rear of radiator
It seems these 2007-2013 GM lambar do not have drain plug.
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 Yukon has 16 valves.
The 2007 GMC Yukon has a V8 engine.
The 2007 GMC Yukon has overhead valves (OHV).
The 2007 GMC Yukon has a 4-speed automatic.
The 2007 GMC Yukon is a gas-powered vehicle.
The maximum payload of the 2007 GMC Yukon is 1327 lbs..
The 2007 GMC Yukon has a 21.9 degrees angle of departure.
The 2007 GMC Yukon's turning circle is 39.0 ft..