GMC SIERRA 1997 Manual page 383

I
Short Trip/City Maintenance Schedule
--
Gasoline Engines
[
99,000 Miles (145 000 km)
0
Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Service.
Lubricate chassis components (or every
3 months, whichever occurs first).
(See footnote
#.)
0
Check readfront axle fluid level and add
fluid as needed. Check constant velocity
joints and axle seals for leaking.
(See footnote
**.)
100,000 Miles (144 000 km)
0
Inspect spark plug wires.
An Emission Control Service.
0
Replace spark plugs.
0
Change automatic transmission fluid
An Emission Control Service.
and filter if the vehicle's GVWR is over
8600 lbs. or if the vehicle is mainly driven
under one or more of these conditions:
-
In heavy city traffic where the outside
temperature regularly reaches 9OoF
(32°C) or higher.
-
In hilly or mountainous terrain.
(Continued)
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