Page 298 of 486
Downloaded from www.Manualslib.com manuals search engine To Check Engine Oil
Pull out the dipstick and clean it with a paper towel or a cloth, then push it
back in all the way. Remove it again, keeping the tip down.
When to Add Oil
If the oil is at or below the ADD line, then you’ll need to add some oil. But
you must use
the right kind. This part explains what kind of oil to use. For
crankcase capacity, see “Capacities and Specifications” in the Index.
NOTICE:
Don’t add too much oil. If your engine has so much oil that the
oil level gets above the proper operating range, your engine
could be damaged.
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Page 303 of 486

Downloaded from www.Manualslib.com manuals search engine To remove the air cleaner filter on a gasoline engine or a 6.5 liter naturally
aspirated diesel engine, turn the wing nuts
to the left. Remove the cover and
change
the filter.
To remove the air cleaner filter on a 6.5 liter turbocharged diesel engine,
first remove the rubber elbow. Remember to observe the caution about
turbocharger blades
on the rubber elbow.
Then, unhook the cover retaining clips
and push the rear
of
the cover toward the
engine.
Automatic Transmission Nuid
When to Check and Change
A good time to check your automatic transmission fluid level is when the
engine
oil is changed. Refer to the Maintenance Schedule to determine
when to change your
fluid. See “Scheduled Maintenance Services” in the
Index.
How to Check
Because this operation can be a little difficult, you may choose to have this
done
at your GM dealer Service Department.
If you do
it yourself, be sure to follow all the instructions here, or you could
get a false reading on the dipstick.
NOTICE:
Too much or too little fluid can damage your transmission. Too
much can mean that some of the fluid could come out and fall on
hot engine parts or exhaust system parts, starting a fire. Be \
sure
to get an accurate reading
if you check your transmission fluid.
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Page 304 of 486

Downloaded from www.Manualslib.com manuals search engine Wait at least 30 minutes before checking the transmission fluid level if you
have been driving:
0 When outside temperatures are above 90°F (32°C j,
At high speed for quite a while.
In heavy traffic - especially in hot weather.
0 While pulling a trailer.
To get the right reading, the fluid should be at normal operating
temperature, which
is 180°F to 200°F (82°C to 93°C).
To check transmission fluid hot: Get the vehicle warmed up by driving
about
15 miles (24 km) when outside temperatures are above 50°F (1 0°C).
If it's colder than 50°F (10"C), drive
the vehicle in DRIVE (D) until the
engine temperature gage moves and then remains steady for ten minutes.
Then follow the
hot check procedures.
To check transmission fluid cold: A cold check is made after the vehicle
has been sitting for eight hours
or more with the engine off and is used only
as
a reference. Let the engine run at idle for five minutes if outside
temperatures are 50°F (10°C) or more. If it's colder than 50°F (IO'C), you
may have to idle
the engine longer. Should the fluid level be low during a
cold check,
you must perform a hot check before adding fluid. This will
give you
a more accurate reading of the fluid level.
lo check the fluid hot or cold
0 Park your vehicle on a level place. Keep the engine running.
With the parking brake applied, place the shift lever in PARK (P).
With your foot on the brake pedal, move the shift lever through each
gear range, pausing
for about three seconds in each range. Then,
position
the shift lever in PARK (P).
Let the engine run at idle for three minutes or more.
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Page 305 of 486
Downloaded from www.Manualslib.com manuals search engine Then, without shutting off the engine, follow these steps:
1. Flip the handle up and then pull out the dipstick and wipe it with a
clean rag or paper towel.
2. Push it back in all the way, wait three seconds and then pull it back out
again.
3. Check both sides of the dipstick, and read the lower level. The fluid
level must be
in the COLD area for a cold check or in the HOT area or
cross-hatched area for a hot check.
4. If the fluid level is in the acceptable range, push the dipstick back in all
the way; then flip the handle down to lock the dipstick
in place.
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Page 306 of 486

Downloaded from www.Manualslib.com manuals search engine How to Add Fluid
Refer to the Maintenance Schedule to determine what kind of transmission
fluid to use. See “Recommended Fluids and Lubricants”
in the Index.
Add fluid only after checking the transmission fluid HOT.
(A COLD check
is used
only as a reference.) If the fluid level is low, add only enough of the
proper fluid to bring the level up to the HOT area for a
hot check. It doesn’t
take much fluid, generally less than a
int. Don 7 overfill. We recommend
you
use only fluid labeled DEXRON -111, because fluid with that label is
made especially for your automatic transmission. Damage caused by fluid
other than DEXRON@-111
is not covered by your new vehicle warranty.
8
After adding fluid, recheck the fluid level as described under “How to
Check.”
When the correct fluid level is obtained, push the dipstick back in all
the way; then flip
the handle down to lock the dipstick in place.
Manual Transmission Fluid
When to Check
A good time to have it checked is when the engine oil is changed. However,
the fluid
in your manual transmission doesn’t require changing.
How to Check
Because this operation can be a little difficult, you may choose to have this
done at your
GM dealer Service Department.
If you do it yourself, be sure to follow all the instructions here, or you could
get a false reading.
I NOTICE:
Too much or too little fluid can damage your transmission. Too
much can mean that some of the fluid could come out and fall on
hot engine parts or exhaust system parts, starting a fire.
Be sure
to get an accurate reading if you check your transmission fluid.
Check the fluid level only when your engine is off, the vehicle is parked on
a level place and the transmission is cool enough for you to rest your fingers
on the transmission case.
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Page 307 of 486
Downloaded from www.Manualslib.com manuals search engine Then, follow these steps:
1. Remove the filler plug.
2. Check that the lubricant level is up to the bottom of the filler plug hole.
3. If the fluid level is good, install the plug and be sure it is fully seated. If
the fluid level is low, add more fluid as described
in the next steps.
How to Add Fluid
Here’s how to add fluid. Refer to the Maintenance Schedule to determine
what kind of fluid to use. See “Recommended Fluids and Lubricants”
in the
Index.
1. Remove the filler plug.
2. Add fluid at the filler plug hole. Add only enough fluid to bring the
fluid level up
to the bottom of the filler plug hole.
3. Install the filler plug. Be sure the plug is fully seated.
Hydraulic Clutch
The hydraulic clutch linkage in your vehicle is self-adjusting. A slight
amount of play
(1/4 inch to 1/2 inch) in the pedal is normal.
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Page 308 of 486
Downloaded from www.Manualslib.com manuals search engine When to Check and What to Use
Refer to the
Maintenance Schedule
to determine how
often you should
check the fluid level
in your clutch master
cylinder reservoir and
for the proper fluid.
See “Owner Checks and Services” and “Recommended Fluids and
Lubricants”
in the Index.
How to Check
The proper fluid should be added if the level does not reach the bottom of
the diaphragm when it’s in place in the reservoir. See the instructions on the
reservoir cap.
Rear Axle
When to Checkand Change Lubricant
Refer to the Maintenance Schedule to determine how often to check the
lubricant and when to change
it. See “Scheduled Maintenance Services”
How to Check Lubricant
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Page 309 of 486

Downloaded from www.Manualslib.com manuals search engine What to Use
Refer to the Maintenance Schedule to determine what kind of lubricant to
use. See “Recommended Fluids and Lubricants”
in the Index.
Four- Wheel Drive
Most lubricant checks in this section also apply to four-wheel-drive
vehicles. However, they have two additional systems that need lubrication.
Transfer Case
When to Check Lubricant
Refer to the Maintenance Schedule to determine how often to check the
lubricant. See “Periodic Maintenance Inspections”
in the Index.
How to Check Lubricant
If the level is below
the bottom of
the filler
plug hole, you’ll need
to add some lubricant.
Add enough lubricant
to raise the level
to the
bottom
of the filler
plug hole.
What to Use
Refer to the Maintenance Schedule to determine what kind of lubricant to
use. See “Recommended Fluids and Lubricants” in the Index.
Front Axle
When to Check and Change Lubricant
Refer to the Maintenance Schedule to determine how often to check the
lubricant and when to change
it. See “Scheduled Maintenance Services” in
the Index.
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