GMC 1995 Safari Owner's Manual page 300

Maintenance Schedule II
The services shown in this schedule up to 100,000 miles (1 66 000 km)
should be performed after 100,000 miles (
166 000 km) at the same intervals.
Footnotes
The California Air Resources Board has determined that the failure to
perform this maintenance item will not nullify the emission warranty or
limit recall liability prior to the completion of vehicle useful life. We,
however, urge that all recommended maintenance services be performed at
the indicated intervals and the maintenance be recorded.
**
Drive axle service:
0
Locking Differential
-
Drain fluid and refill at first engine oil change.
At subsequent oil changes, check fluid level and add fluid as needed. If
driving in dusty areas or towing a trailer, drain fluid and refill every
15,000 miles (25 000 km).
Standard Differential - Check fluid level and add fluid as needed at
every engine oil change. If driving in dusty areas or towing a trailer,
drain fluid and refill every 15,000 miles (25 000 km).
More frequent lubrication may be required for heavy-duty use.
7,500 Miles (12 500 km)
0
Change engine oil and filter (or every 12 months, whichever occurs
first). An Emission Control Service.
Lubricate the front suspension, ball joints and king pin bushings,
steering linkage and transfer case shift linkage, parking brake cable
guides, and brake pedal springs at every oil change (or every 12
months, whichever occurs first).
0
Check readfront axle fluid level and add fluid as needed. Check
constant velocity joints and axle seals for leaking.**
0
Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
rotation pattern and additional information.
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