cruise control CHEVROLET C3500 HD 2001 4.G Owners Manual

Table of Contents
Windows
Keys and Door Locks
Keyless Entry System
Automatic Transmission
Manual Transmission
Parking Brake
Tilt Wheel
Turn Signal/Multifunction LeverWindshield Wipers
Cruise Control
Exterior and Interior Lamps
Mirrors
Storage Compartments
Accessory Power Outlets
Instrument Panel, Warning Lights and Gages Seats and Seat Controls
Safety BeltsRestraint Systems for Children
Section
1
Section
2
Seats and Restraint Systems
Features and Controls
ii

2-29
Turn Signal/Multifunction Lever
The lever on the left side of the steering column
includes the following:

Turn and Lane Change Signals

Headlamp High/Low
-Beam Changer

Windshield Wipers

Windshield Washer

Cruise Control (If Equipped)
Turn and Lane Change Signals
The turn signal has two upward (for right) and
two downward (for left) positions. These positions
allow you to signal a turn or a lane change.
To signal a turn, move the lever all the way up or down.
When the turn is finished, the lever will return automatically.
An arrow located on the
instrument panel cluster will
flash in the direction of the
turn or lane change.
To signal a lane change, just raise or lower the lever
until the arrow starts to flash. Hold it there until you
complete your lane change. The lever will return by
itself when you release it.
If you move the lever all the way up or down, and the
arrow flashes at twice the normal rate, a signal bulb
may be burned out and other drivers may not see your
turn signal.
If a bulb is burned out, replace it to help avoid an
accident. If the arrows don't go on at all when you
signal a turn, check for burned
-out bulbs and a blown
fuse (see ªFuses and Circuit Breakersº in the Index).

2-31 Windshield Washer
At the top of the lever,
there's a paddle with the
word PUSH on it. To spray
washer fluid on the
windshield, push the paddle.
CAUTION:
In freezing weather, don't use your washer until
the windshield is warmed. Otherwise the washer
fluid can form ice on the windshield, blocking
your vision.
Washer fluid will spray as long as you push the paddle.
When you let go of the paddle, the wipers will continue
to wipe for a few seconds and then either stop or return
to the preset speed.
The use of a hood
-mounted air deflector may adversely
affect windshield wiper and washer performance.
Cruise Control (If Equipped)
With cruise control, you can
maintain a speed of about
25 mph (40 km/h) or more
without keeping your foot
on the accelerator. This can
really help on long trips.
Cruise control does not
work at speeds below about
25 mph (40 km/h).
When you apply your brakes, the cruise control shuts off.

2-32
CAUTION:

Cruise control can be dangerous where you
can't drive safely at a steady speed. So,
don't use your cruise control on winding
roads or in heavy traffic.

Cruise control can be dangerous on
slippery roads. On such roads, fast changes
in tire traction can cause needless wheel
spinning, and you could lose control. Don't
use cruise control on slippery roads.
Setting Cruise Control
CAUTION:
If you leave your cruise control switch on when
you're not using cruise, you might hit a button
and go into cruise when you don't want to. You
could be startled and even lose control. Keep the
cruise control switch off until you want to use
cruise control.
1. Move the cruise switch to ON.
2. Get up to the speed you want.
3. Press in the SET button at the end of the lever and
release it.
4. Take your foot off the accelerator pedal.

2-33
Resuming a Set Speed
Suppose you set your cruise control at a desired speed
and then you apply the brake. This, of course, shuts off
the cruise control. But you don't need to reset it.
Once you're going about 25 mph (40 km/h) or more,
you can move the cruise switch from ON to R/A
(Resume/Accelerate) briefly.
You'll go right back up to your chosen speed and
stay there.
Remember, if you hold the switch at R/A longer, the
vehicle will keep going faster until you release the
switch or apply the brake. So unless you want to go
faster, don't hold the switch at R/A.
Increasing Speed While Using Cruise Control
There are two ways to go to a higher speed:

Use the accelerator pedal to get to the higher speed.
Press the SET button at the end of the lever, then
release the button and the accelerator pedal. You'll
now cruise at the higher speed.
Move the cruise switch from ON to R/A. Hold it
there until you get up to the speed you want, and
then release the switch. (To increase your speed in
very small amounts, move the switch to R/A briefly.
Each time you do this, your vehicle will go about
1 mph (1.6 km/h) faster.)
Reducing Speed While Using Cruise Control
There are two ways to reduce your speed while using
cruise control:

Press the SET button at the end of the lever until you
reach the lower speed you want, then release it.

To slow down in very small amounts, press the
button briefly. Each time you do this, you'll go about
1 mph (1.6 km/h) slower.
Passing Another Vehicle While Using Cruise Control
Use the accelerator pedal to increase your speed. When
you take your foot off the pedal, your vehicle will slow
down to the cruise control speed you set earlier.

2-34
Using Cruise Control on Hills
How well your cruise control will work on hills depends
upon your speed, load and the steepness of the hills.
When going up steep hills, you may have to step on the
accelerator pedal to maintain your speed. If the
steepness of the hill causes the vehicle speed to drop
more than 15 mph (24 km/h) below the set speed, your
cruise control will automatically disengage. When going
downhill, you may have to brake or shift to a lower gear
to keep your speed down. Of course, applying the brake
takes you out of cruise control. Many drivers find this to
be too much trouble and don't use cruise control on
steep hills.
Ending Cruise Control
There are two ways to turn off the cruise control:

Step lightly on the brake pedal or

move the cruise switch to OFF.
Erasing Speed Memory
When you turn off the cruise control or the ignition,
your cruise control set speed memory is erased.Exterior Lamps
Your parking lamp and headlamp knob is located on the
driver's side of your instrument panel.

4-40
Using PTO speed control in Preset Mode
(Factory Setting):
1. Engage the PTO.
2. Select PARK (P) or NEUTRAL (N) range.
Apply the parking brake if NEUTRAL (N) is
selected. Torque Converter Clutch (TCC) is not
available in NEUTRAL (N) and is available only
in PARK when speed is above 1100 rpm.
3. Make sure your foot is off the brake pedal
(and off the clutch on vehicles equipped with a
manual transmission). Select the desired engine
speed for PTO operation. Please read the following
Preset Mode information regarding operation.
Preset Mode: PTO speed control mode is used for
stationary applications. This mode provides a default
standby speed of 800 or 850 rpm (depending on the
engine/transmission combination) and two default
PTO control speeds which follow:
1. PTO Fast Idle Speed of 1250 rpm, or
2. PTO Fast Idle Resume Speed of 1700 rpm.
Please note that the standby speed (800/850 rpm) is
not to be used as a PTO control speed. Vehicles not
equipped with cruise control will not have the resume
speed capability.
NOTICE:
Using a PTO for more than four hours without
driving your vehicle can damage the transmission.
If using a PTO for more than four hours without
driving your vehicle, drive your vehicle for a while
to allow the transmission to cool.
If you are going to drive the vehicle, shift the transmission
into the gear you want, apply the regular brakes and
release the parking brake.
Release the clutch (and the regular brakes) as you
normally would. When you release the clutch,
the PTO will start.
To engage a PTO while the vehicle is moving:
1. Hold the clutch pedal down.
2. Shift the transmission into NEUTRAL.
3. Engage the PTO.
4. Shift the transmission into the gear you want.
5. Release the clutch as you normally would.
When you release the clutch, the PTO will start.

4-41
Using PTO speed control in Variable Mode (Mobile):
1. Engage the PTO.
2. Vehicle speed must be greater than 5 mph for vehicles
equipped with gasoline engines or greater than 0 mph
for vehicles equipped with diesel engines.
3. Make sure your foot is off the brake pedal
(and off the clutch for vehicles equipped with a
manual transmission).
4. Select the desired engine speed (with the foot pedal)
and select SET on the PTO switch or with the
cruise control.
Using PTO speed control in Variable
Mode (Stationary):
1. Engage the PTO.
2. Vehicle speed must be less than 5 mph for vehicles
equipped with gasoline engines or at 0 mph for
vehicles equipped with diesel engines.
3. Make sure your foot is off the brake pedal
(and off the clutch for vehicles equipped with a
manual transmission).
4. Select the desired engine speed (with the foot pedal)
and select SET on the PTO switch or with the
cruise control.Variable Mode: PTO speed control mode can be used
for both stationary and mobile applications. This mode
allows PTO to be controlled in a fashion similar to how
cruise control sets vehicle speed. The operator can set to
an rpm (between 800 and 2200) with the cruise control
feature or with the SET position on the PTO switch.
The operator is then able to increase rpm in increments
of 100, or ªtapº, with the resume position on the cruise
control. Or, the operator can decrease rpm in increments
of 100 with either of the SET switches on the PTO or
the cruise control. Vehicles not equipped with
cruise control will not be able to increase in
100 rpm increments.
All engine speed values listed above are factory preset
values. With the exception of the TCC lockup speed
(1100 rpm) and the ªtapº increment (100 rpm), all of
these values are programmable and can be adjusted by
your GM dealer or body upfitter. If the PTO software
settings do not match the settings shown here, then
they may have already been altered in order to satisfy
the requirements of the installed PTO system and
body equipment.

6-62
Fuse/Circuit
BreakerUsage
4 Instrument Cluster, DRL Relay,
Lamp Switch, Keyless Entry, Low
Coolant Module, Illuminated Entry
Module, DRAC (Diesel Engine)
5 Not Used
6 Cruise Control
7 Auxiliary Power Outlet
8 Crank
9 License Lamp, Parking Lamps,
Taillamps, Roof Marker
Lamps, Front Sidemarkers,
Door Switch Illumination,
Headlamp Switch Illumination
10 Not Used
11 Wiper Motor, Washer Pump
12 A/C, A/C Blower,
High Blower Relay
13 Power Amp, Cigarette Lighter,
Door Lock RelayFuse/Circuit
BreakerUsage
14 Cluster, Comfort Controls,
Instrument Switches, Radio
Illumination, Chime Module
15 DRL Relay
16 Front and Rear Turn Signals,
Back
-Up Lamps
17 Radio (Ignition)
18 4WAL/VCM, ABS, Cruise Control
19 Radio (Battery)
20 PRNDL, Automatic Transmission,
Speedometer, Check Gages
Warning Light
21 Security/Steering
22 Not Used
23 Not Used
24 TP2 Relay (Gasoline Engine)
A Power Door Lock, Keyless
Entry Module
B Power Windows

7-51 Throttle System Inspection
(Gasoline Engine)
Inspect the throttle system for interference or binding,
and for damaged or missing parts. Replace parts as
needed. Replace any components that have high effort
or excessive wear. Do not lubricate accelerator and
cruise control cables.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook
-up, binding, leaks, cracks,
chafing, etc. Inspect disc brake pads for wear and rotors
for surface condition. Inspect other brake parts,
including calipers, parking brake, etc. Check parking
brake adjustment. You may need to have your brakes
inspected more often if your driving habits or conditions
result in frequent braking.