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24mm
OBD Blug sit's at the fuse board left, underneath of the stearing wheel.
Check the back of the heater switch. The electrical plug may be having an melt down from resistance.
oil drain plug on cadillac sts42008
The 2008 Cadillac Escalade oil pan drain plug can be found on the bottom of the oil pan. The oil pan drain plug will be near the front of the oil pan.
It seems these 2007-2013 GM lambar do not have drain plug.
You are best to use a semi-synthetic oil. Preferably 10W40.
On the bottom of the radiator is a large drain plug.
The oil is wrong weight - oil plug is out - will not drain
on the radiator
The engine oil drain plug torque spec is 19 Ft-lbs.
On the backside of the oil pan.