My 2005 STS has none ....you push in fuel door and it opens
The 1996 Cadillac STS Radiator does not have a drain plug
2006 caddy sts 3.6 have no dipsticks. tran sealed..good for 100000 miles, your 2005 is probably the same.
no, it is a self contained system ...Have a caddy tech check it from underneath
oil drain plug on cadillac sts42008
There probably isn't one. Remove the bottom hose, to drain.
The 2006 Cadillac STS V-6 engine oil drain plug can be found on the bottom of the oil pan. The drain plug can be removed with a half inch ratchet.
Remove rear seat and remove battery
Under the back seat
Under the rear seat
Inside the car, Under the rear seat
under the hood passenger side