Long
TriplHighway
Maintenance Schedule
I
15,000
Miles
(25
000
km)
Change engine oil and filter (or every
7.5
months, whichever occurs first).
An
Emission
Control
Service.
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
freedom
of
movement. Refer to the
appropriate
GM
service manual for proper
caliper service procedures.
Inspect the locking front hubs (if equipped)
for correct operation (or every
3
months,
whichever occurs first). Repair or replace
if necessary.
Inspect the valve
lash
and adjust if
necessary.
An
Emission
Control
Service.
0
Check engine idle speed and adjust it to
underhood label specifications.
An
Emission
Control
Service.?
0
Inspect propeller shafts and u-joints for
looseness and damage (or every
15
months,
whichever occurs first). Inspect more
frequently
if
used off-road
or
for pulling
a trailer. Tighten u-joint flange bolts
if
necessary.
DATE
SERVICED
BY
ACTUAL MILEAGE
7-33