Cadillac 2009 DTS Owner's Manual page 414

Service and Miles (Kilometers)
Replace spark plugs. An Emission
Control Service.
Except Professional Vehicle: Engine
cooling system service (or every
five years, whichever occurs first).
An Emission Control Service.
See footnote (j).
Professional Vehicle Only: Engine
cooling system service (or every
five years, whichever occurs first).
An Emission Control Service.
See footnote (j).
Inspect engine accessory drive belt.
An Emission Control Service.
See footnote (l).
6-6
Additional Required Services (cont'd)
25,000
(40 000) (80 000)
50,000 75,000
(120 000) (160 000)
•
100,000 125,000
(200 000)
•
150,000
(240 000)
•
•
•