GMC SIERRA 1997 Manual page 398

Long Tripmighway Maintenance Schedule
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Gasoline Engines
100,000 Miles (166 000 km) (Continued)
-
When doing frequent trailer towing.
-
Uses such as found in taxi, police or
delivery service.
If you do not use your vehicle under any of
these conditions, the fluid and.filter do not
require changing.
Manual transmission fluid doesn't
require change.
0
Inspect Positive Crankcase Ventilation
(Pcv)
valve.
An Emission Control Service.
DATE ACTUAL MILEAGE
~~
SERVICED B Y
150,000 Miles (240 000 km)
0
Drain, flush and refill cooling system
(or every 60 months since last service,
whichever occurs first). See "Engine
Coolant" in the Index for what to use.
Inspect hoses. Clean radiator, condenser,
pressure cap and neck. Pressure test the
cooling system and pressure cap.
An Emission Control Service.
1
DATE ACTUAL MILEAGE SERVICED B Y
-