Cadillac 2009 CTS - Manual (Page 330)

Engine Cover (CTS-V) To remove:
The engine cover consists of two pieces. Only the larger
piece needs to be removed to access the engine oil
and power steering fill caps.
1. Raise the front of engine cover (A) to release from
the ball studs (B).
2. Pull the engine cover forward until clear of the
smaller piece.
3. Lift and remove the engine cover.
4. Reverse Steps 1 through 3 to reinstall engine
cover.
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