GMC 1998 Savana Van Owner's Manual page 343

Long Trip/Highway Maintenance Schedule
--
Gasoline Engines
I
45,000 Miles (75 000 km)
0
Change engine oil and filter (or every 12 months, whichever occurs first).
0
Lubricate chassis components (or every 12 months, whichever occurs first).
0
Check axle fluid level and add fluid as needed. (See footnote
**.)
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 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. (See footnote
+.)
An Emission Control Service.
(See footnote
#.)
50,000 Miles (83 000 km)
0
Change automatic transmission fluid 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 90°F
- In hilly or mountainous terrain.
(32°C) or higher.
(Continued)
DATE
I
MILEAGE
ACTUAL
SERVICED B Y
DATE
7-31