Chevrolet 2009 Silverado Owner's Manual page 550

Service and Miles (Kilometers)
Four-wheel drive only: Change transfer
case fluid (severe service). See
footnotes (g) and (m).
Four-wheel drive only: Change transfer
case fluid (normal service). See
footnote (g).
Inspect evaporative control system.
An Emission Control Service. See
footnotes † and (k).
Replace spark plugs and inspect spark
plug wires. An Emission Control
Service.
Engine cooling system service
(or every five years, whichever occurs
first). An Emission Control Service. See
footnote (i).
Inspect engine accessory drive belt.
An Emission Control Service. See
footnote (q).
6-8
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)
•
•
•
•