GMC Yukon Owner's Manual page 355

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Short TripKity Maintenance Schedule
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Gasoline Engines
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99,000 Miles (165 000 km)
0
Change engine oil and filter (or every
3 months, whichever occurs first).
An Etnission Control Service.
0
Lubricate chassis components; see footnote #
(or every 3 months, whichever occurs first).
Check readfront axle fluid level and add
fluid as needed. Check constant velocity
joints and axle seals for leaking.
**
DATE ACTUAL MILEAGE
-I
SERVICED B Y
100,000 Miles (166 000 km)
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 cooling system and pressure cap.
An Emission Control Service.
0
Inspect spark plug wires.
An EInission Control Service.
0
Replace spark plugs.
An Emission Control Service.
(Continued)
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