GMC 2007 Sierra 1500 Pickup Owner's Manual page 622

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).
622
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)