2007 CHEVROLET COLORADO ECU

Driving with a Trailer
Towing a trailer requires a certain amount of
experience. Before setting out for the open road,
you’ll want to get to know your rig. Acquaint
yourself with the feel of handling and braking
with the added weight of the trailer. And always
keep in mind that the vehicle you are driving
is now a good deal longer and not nearly
as responsive as your vehicle is by itself.
Before you start, check all trailer hitch parts and
attachments, safety chains, electrical connector,
lamps, tires and mirror adjustment. If the trailer
has electric brakes, start your vehicle and
trailer moving and then apply the trailer brake
controller by hand to be sure the brakes are
working. This lets you check your electrical
connection at the same time.
During your trip, check occasionally to be sure
that the load is secure, and that the lamps and
any trailer brakes are still working.
Following Distance
Stay at least twice as far behind the vehicle ahead
as you would when driving your vehicle without
a trailer. This can help you avoid situations
that require heavy braking and sudden turns.
Passing
You’ll need more passing distance up ahead when
you’re towing a trailer. And, because you’re a
good deal longer, you’ll need to go much farther
beyond the passed vehicle before you can
return to your lane.
Backing Up
Hold the bottom of the steering wheel with
one hand. Then, to move the trailer to the left,
just move that hand to the left. To move the
trailer to the right, move your hand to the right.
Always back up slowly and, if possible, have
someone guide you.
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Radiator Pressure Cap
Notice:If the pressure cap is not tightly
installed, coolant loss and possible engine
damage may occur. Be sure the cap is
properly and tightly secured.
SeeEngine Compartment Overview on page 332
for more information on location.
Engine Overheating
A coolant temperature gage is on the instrument
panel. SeeEngine Coolant Temperature Gage
on page 191.
The air conditioning might stop working if the
engine is too hot. This is normal and helps
cool the engine.
If Steam Is Coming From Your Engine
{CAUTION:
Steam from an overheated engine can
burn you badly, even if you just open the
hood. Stay away from the engine if you
see or hear steam coming from it. Just
turn it off and get everyone away from
the vehicle until it cools down. Wait until
there is no sign of steam or coolant
before you open the hood.
If you keep driving when your engine is
overheated, the liquids in it can catch re.
You or others could be badly burned.
Stop your engine if it overheats, and get
out of the vehicle until the engine is cool.
Notice:If your engine catches re because
you keep driving with no coolant, your vehicle
can be badly damaged. The costly repairs
would not be covered by your warranty.
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3. Fill the radiator with the proper DEX-COOL®
coolant mixture, up to the base of the ller
neck. SeeEngine Coolant on page 345
for more information about the proper
coolant mixture.
4. Fill the coolant recovery tank to the
FULL COLD mark.
5. Reinstall the cap on the coolant recovery tank,
but leave the radiator pressure cap off.6. Start the engine and let it run until you can
feel the upper radiator hose getting hot.
Watch out for the engine cooling fan.
7. By this time, the coolant level inside the
radiator ller neck might be lower. If the level
is lower, add more of the proper DEX-COOL
®
coolant mixture through the ller neck until the
level reaches the base of the ller neck.
8. Then replace the pressure cap.
At any time during this procedure if coolant begins
to ow out of the ller neck, reinstall the pressure
cap. Be sure to secure it tightly.
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Headlamps
A. Low-Beam Headlamp/Daytime Running
Lamps (DRL)
B. High-Beam Headlamp
To replace one of these bulbs:
1. Open the hood. SeeHood Release on
page 331for more information.
2. Reach in and access the bulb sockets
from inside the engine compartment.3. Turn the bulb socket counterclockwise to
remove it from the headlamp assembly
and pull it straight out.
4. Unplug the electrical connector from the old
bulb by releasing the clips on the bulb socket.
5. Replace with a new bulb socket.
6. Plug in the electrical connector to the
new bulb socket.
7. Reinstall the new bulb socket into the
headlamp assembly and turn it clockwise
to secure.
8. Close the hood.
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Front Turn Signal, Parking and
Daytime Running Lamps (DRL)
To replace one of these bulbs:
1. Open the hood. SeeHood Release on
page 331for more information.
2. Reach in to access either one of the bulb
sockets in the engine compartment.
3. Turn the bulb socket counterclockwise and
remove it from the lamp assembly.
4. Holding the socket, pull the old bulb to
release it from the bulb socket.5. Push the new bulb into the socket until it clicks.
6. Insert the bulb socket into the lamp assembly
and turn it clockwise to secure.
7. Close the hood.
Center High-Mounted Stoplamp
(CHMSL)
To replace the CHMSL bulb:
1. Remove the two screws and lift off the lamp
assembly from the vehicle.
2. Turn the bulb socket counterclockwise and
remove it from the lamp assembly.
3. Holding the socket, pull the bulb to release it
from the socket.
4. Push the new bulb into the socket until it clicks.
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5. Insert the bulb socket into the lamp assembly
and turn it clockwise to secure.
6. Reinstall the lamp assembly and tighten
the screws.
Taillamps, Turn Signal, Stoplamps
and Back-up Lamps
A. Stoplamp/Taillamp
B. Turn Signal/Taillamp
C. Back-up Lamp
To replace one of these bulbs:
1. Open the tailgate.
SeeTailgate on page 110
for more information.2. Remove the
two rear lamp
assembly
screws near the
tailgate latch.
3. Pull the lamp assembly away from the vehicle.
4. Turn the bulb socket counterclockwise to
remove it from the taillamp assembly.
5. Holding the socket, pull the old bulb to
release it from the socket.
6. Push the new bulb into the socket until it clicks.
7. Insert the bulb socket into the taillamp
assembly and turn it clockwise to secure.
8. Reinstall the taillamp assembly and tighten
the screws.
9. Close the tailgate.
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License Plate Lamp
To replace one of these bulbs:
1. Reach under the rear bumper for the bulb
socket.
2. Turn the bulb socket counterclockwise and
pull the bulb socket out of the connector.
3. Pull the old bulb straight out from the bulb
socket.
4. Push the new bulb straight in until it clicks
to secure it.
5. Reverse Steps 1 through 3 to reinstall the
license plate lamp.
Replacement Bulbs
Exterior Lamp Bulb Number
Center High-Mounted
Stoplamp (CHMSL)912
License Plate Bulb W5W
Headlamps
High-beam 9005
Low-beam/Daytime
Running Lamp (DRL)9006
Parking/Front Turn Signal 3757KA
Parking Lamp (Inboard) 3157A
Stoplamp, Rear Turn Signal,
Taillamp, and Back-up Lamp3057
For replacement bulbs not listed here, contact
your dealer/retailer.
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Tire Inspection and Rotation
Tires should be rotated every 5,000 to 8,000 miles
(8 000 to 13 000 km).
Any time you notice unusual wear, rotate your
tires as soon as possible and check wheel
alignment. Also check for damaged tires or wheels.
SeeWhen It Is Time for New Tires on page 391
andWheel Replacement on page 396for
more information.
Make sure the spare tire is stored securely.
Push, pull, and then try to rotate or turn the tire.
If it moves, use the wheel wrench to tighten
the cable. SeeChanging a Flat Tire on page 400.
The purpose of regular rotation is to achieve
more uniform wear for all tires on the vehicle.
The rst rotation is the most important, see
Scheduled Maintenance on page 442.When rotating your tires, always use one of the
correct rotation patterns shown here.
If your vehicle has a compact spare tire or a spare
tire that does not match your vehicle’s road tires
and wheels, in size and type, do not include
the spare in the tire rotation.
After the tires have been rotated, adjust the front
and rear ination pressures as shown on the
Tire and Loading Information label. For the
location of the Tire and Loading Information label
seeLoading Your Vehicle on page 293. Make
certain that all wheel nuts are properly tightened,
see “Wheel Nut Torque” underCapacities and
Specications on page 437for the proper wheel
nut torque specication.
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