GMC 1998 Yukon Owner's Manual page 385

Short TripKity Maintenance Schedule
--
Gasoline Engines
0
Check readfront axle fluid level and add fluid as needed. Check constant
0
Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
velocity joints and axle seals for leaking. (See footnote
*'%.)
rotation pattern and additional information. (See footnote
+.)
75,000 Miles (125 000 km)
0
Change engine oil and filter (or every 3 months, whichever occurs first).
0
Lubricate chassis components (or every 3 months, whichever occurs first).
0
For Two-Wheel-Drive vehicles only: Clean and repack the front wheel
0
Check readfront axle fluid level and add fluid
as
needed. Check constant
0
Vehicles With GVWR Above 8,500 lbs. Only: Inspect shields and underhood
An Emissiorz Control Service.
(See footnote
#.)
bearings (or at each brake relining, whichever occurs first).
velocity joints and axle seals for leaking. (See footnote
'k'k.)
insulation for damage or looseness. Adjust or replace as required.
Tlzis is
u
Noise Emission Control Service. Applicc-lble orzly
to
vehicles
sold in the United States.
DATE
I
7-21