You probably did not use a new washer when you changed the oil , remove the plug and install the new washer to it then torque the plug to recommended ft/pounds.
A drain plug washer is not necessary unless you have oil leaking from the drain plug.
Where is oil drain plug on 2007 avalanche
No, there is no drain plug.
A leaking gasket, a leaking filter, or a leaking drain plug....
where is the oil drain plug on a 2007 ford escape 4 cylinder
Oil drain plug or radiator? Buy a new plug at any auto parts store . Bring in the old plug to compair size.
where is the transmission frain plug on a 2006 santa fe locate
Yes, pull out the plug and replace a damage O'ring.
It seems these 2007-2013 GM lambar do not have drain plug.
On the oil pan.
Probably just the gasket on the plug (if it's tight). Make sure the plug isn't stripped.
The oil drain plug is turned counter clockwise to remove it.