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(n) Change clutch fluid (or every 24 months, whichever
occurs first).
(p) Change automatic transmission fluid and external
transmission filter 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 (32°C) or higher.
− In hilly or mountainous terrain.
− When doing frequent trailer towing.
− Uses such as found in taxi, police, or delivery
service.
(q) Check vent hose at transfer case for kinks and
proper installation.
(r) Drain, flush, and refill cooling system. This service
can be complex; you should have your dealer perform
this service. See Engine Coolant on page 5-34 for
what to use. Inspect hoses. Clean radiator, condenser,
van model fuel operated heater (if equipped), pressure
cap, and filler neck. Pressure test the cooling system
and pressure cap. For van models, see Fuel Operated
Heater (FOH) (Van Models Only) on page 2-8.
(s) Visually inspect belt for fraying, excessive cracks,
or obvious damage. Replace belt if necessary.
Owner Checks and Services
These owner checks and services should be performed
at the intervals specified to help ensure the safety,
dependability, and emission control performance of your
vehicle. Your GM Goodwrench
with these checks and services.
Be sure any necessary repairs are completed at once.
Whenever any fluids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
in Recommended Fluids and Lubricants on page 6-15.
At Each Fuel Fill
It is important to perform these underhood checks at
each fuel fill.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. See Engine Oil on page 5-21 for further
details.
Notice: It is important to check your oil regularly
and keep it at the proper level. Failure to keep your
engine oil at the proper level can cause damage
to your engine not covered by your warranty.
®
dealer can assist you
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