GMC 1996 Suburban Owner's Manual page 340

Short TripKity Maintenance Schedule
--
Gasoline Engines
30,000 Miles (50 000 km)
0
Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Service.
0
Lubricate chassis components; see footnote
##
(or every 3 months, whichever occurs first).
0
Check readfront axle fluid level and add
fluid as needed. Check constant velocity
joints and axle seals for leaking.
: W
0
For Two-Wheel-Drive vehicles only: Clean
and repack the front wheel bearings (or at
each brake relining, whichever occurs first).
0
Replace fuel filter.
An
Emission Corn-01 Service.
0
Vehicles With GVWR Above 8,500 lbs.
Only: Inspect shields and underhood
insulation for damage or looseness. Adjust
or replace as required.
This is
LI
Noise Emission
Control Service. Applicable only to vel?icles sold in
the United States.
0
If your engine has a thermostatically
controlled cooling fan, inspect all hoses
and ducts for proper hook-up (or every
12 months, whichever occurs first). Be sure
the valve works properly.
This is a Noise
Emission Control Service. Applicable only to
vehicles sold in the United States.
0
Rotate tires. See "Tire Inspection and Rotation"
in the Index for proper rotation pattern and
additional information. During tire rotation,
check brake calipers for Ereedom of movement.
Refer to the appropriate GM service manual for
proper caliper service procedures.
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