Page 268 of 404

Install the new filter by pushing it all the way to the stop
on the duct.
Install
the duct and the filter into the air cleaner housing.
Make sure that the duct fits properly into the housing.
Install
the cover and fasten the two retaining clips.
After the air filter
is properly serviced, the indicator
should
be reset. Push the button on top of the indicator
to reset it to the green (clean) filter zone. Refer
to the
Maintenance Schedule to determine when to
replace the air filter.
See “Scheduled Maintenance Services”
in the Index.
I
Operating the engine with the air cleaner off can
cause you
or others to be burned. The air cleaner
not only cleans the air, it stops flame
if the engine
backfires.
If it isn’t there, and the engine
backfires,
you could be burned. Don’t drive with
it
off, and be careful working on the engine with
the
air cleaner off.
I NOTICE:
If the air cleaner is off, a backfire can cause a
damaging engine fire. And, dirt can easily get
into your engine, which
will damage it. Always
have the air cleaner
in place when you’re driving.
6-18
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Page 285 of 404

NOTICE:
0
0
Using the wrong fluid can badly damage
brake system parts. For example,.just a few
drops of mineral-based oil, such
as engine
oil,
in your brake system can damage brake
system parts
so badly that they’ll have to be
replaced. Don’t let someone put in the
wrong kind of fluid.
If you spill brake fluid on your vehicle’s
painted surfaces, the paint finish can be
damaged. Be careful not to spill brake
fluid on your vehicle.
If you do, wash it
off immediately. See &‘Appearance Care”
in
the Index.
Brake Wear
If you have a C 3500 HD model, it has four-wheel
disc brakes.
Disc brake pads have built-in wear indicators that
make a high-pitched warning sound when the brake
pads are worn and
new pads are needed. The sound
may come and
go or be heard all the time your vehicle
is moving (except when you are pushing on the brake
pedal firmly).
A’ CAUTION:
I
The brake wear warning sound means that
sooner or later your brakes won’t work well.
That could lead to an accident. When you hear
the brake wear warning sound, have your vehicle serviced.
6-35
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Page 369 of 404

Automatic Transmission Check
Restraint System Check
Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors and anchorages are
working properly. Look
for any other loose or damaged
safety belt system parts.
If you see anything that might
keep a safety belt system from doing its job, have
it
repaired. Have any torn or frayed safety belts replaced.
Also
look for any opened or broken air bag covers, and
have them repaired or replaced. (The air bag
system
does not need regular maintenance.)
Air Cleaner Filter Restriction Indicator Check
Your vehicle has an indicator on the engine that lets you
know when the air cleaner filter is dirty and needs to be
changed. Check indicator at least twice
a year or when
your
oil is changed. See “Air Cleaner” in the Index for
more information.
Manual Transmission Check
Check the transmission fluid level; add if needed. See
“Manual Transmission” in
the Index. A fluid loss may
indicate
a problem. Check the system and repair if needed. Check the transmission
fluid level; add if needed. See
“Automatic Transmission”
in the Index. A fluid loss
may indicate a problem. Check the system and repair
if needed.
Hydraulic Clutch System Check
Check the fluid level in the clutch reservoir. See
“Hydraulic Clutch Fluid”
in the Index. A fluid loss in
this system could indicate a problem. Have the system
inspected and repaired
at once.
At Least Once a Year
Key Lock Cylinders Service
Lubricate the key lock cylinders with the lubricant
specified
in Part D.
Body Lubrication Service
Lubricate all fuel doors, body hood and body door
hinges, tailgate and tailgate handle pivot points, latches,
locks and folding seat hardware. Part
D tells you what to
use. More frequent lubrication may be required when
exposed to a corrosive environment.
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Page 396 of 404

Labels Certification
................................. 4-42
CertificatiodTire
............................. 4-42
Service Parts Identification
..................... 6-67
Vehicle Identification Number
................... 6-67
Lalnps
........................................ 2-39
Cargo
...................................... 2-43
Dome
...................................... 2-42
Interior
..................................... 2-42
On Reminder ................................ 2-39
UnderhoodReel
.............................. 2-41
Latches. Seatback
................................ 1-5
Leaving Your Vehicle ............................. 2-5
Leaving Your Vehicle
with the Engine Running ....... 2-28
Lighter
....................................... 2-52
Lights Air Bag Readiness
....................... 1-22. 2-59
Anti-Lock Brake System Warning
............ 2.62. 4-6
Brake System Warning
......................... 2-61
Charging System
............................. 2-59
CheckGages
................................ 2-67
Daytime Running Lamps Indicator
............... 2-67
Safety Belt Reminder
...................... 1-9.2-58
Service Engine Soon
.......................... 2-63
Shift
.................................. 2-20. 2-66
Loading Information, Truck-Camper
............... 4-44
Loading Your Vehicle
........................... 4-42
Lockoutswitch
................................ 2-32
Locks
Cylinders ................................... 7-43
Door
........................................ 2-4 Key Lock
Cylinders Service
.................... 7-43
PowerDoor
.................................. 2-5
Steering Column Lock Check
................... 7-45
Lubricants
and Fluids ............................ 7-48
Lubrication Service. Body
........................ 7-43
Lumbar Controls
................................ 1-2
Maintenance. Normal Replacement Parts
........... 6-75
Maintenance Record
............................ 7-51
Maintenance Schedule
............................ 7-1
Long Trip/Highway Definition
................... 7-5
Long Trip/Highway Intervals
..................... 7-5
Owner Checks and Services
..................... 7-42
Periodic Maintenance Inspections
................ 7-46
Recommended Fluids and Lubricants
............. 7-48
Scheduled Maintenance Services
.................. 7-3
Short Trip/City Definition
....................... 7-4
Short Trip/City Intervals ........................ 7-4
Maintenance. Underbody
......................... 6-65
Maintenance When Trailer Towing ................. 4-59
Malfunction Indicator Lamp
...................... 2-63
Manual Front Seat
............................... 1-1
Manual Mirror ................................. 2-45
Manual Transmission Check
...................................... 7-43
Fluid
....................................... 6-22
Shifting
................................ 2-17. 2-18
Starting Your Engine .......................... 2-11
Manual Windows
............................... 2-31
Memo Pad Holder
.............................. 2-49
Methanol
...................................... 6-3
9-6
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