Cadillac 2009 CTS - Manual (Page 426)

Fuses and Circuit Breakers
The wiring circuits in the vehicle are protected from
short circuits by a combination of fuses and circuit
breakers. This greatly reduces the chance of fires
caused by electrical problems.
Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical size
and rating.
If you ever have a problem on the road and don’t have
a spare fuse, you can borrow one that has the same
amperage. Just pick some feature of the vehicle that you
can get along without — like the radio or cigarette
lighter — and use its fuse, if it is the correct amperage.
Replace it as soon as you can.
Underhood Fuse Block (CTS)
The underhood fuse block is located on the passenger
side of the engine compartment.
Lift the fuse block cover to access the fuses.
Notice: Spilling liquid on any electrical components
on the vehicle may damage it. Always keep the
covers on any electrical component.
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