GMC Sierra Classic 2007 Owner's Manual page 618

Service and Miles (Kilometers)
Except Allison Transmission
automatic transmission fluid and filter
(severe service). See footnote (h).
Except Allison Transmission
automatic transmission fluid and filter
(normal service).
Four-wheel drive with automatic transfer
case only: Change transfer case fluid.
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.
Change manual transmission fluid.
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).
618
Additional Required Services (cont'd)
25,000
(40 000)
®
: Change
®
: Change
50,000 75,000
(80 000) (120 000)
•
•
•
100,000 125,000
(160 000) (200 000)
•
•
•
•
•
150,000
(240 000)
•
•
•
•
•
•