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270 Vehicle Care
Center High-Mounted
Stoplamp (CHMSL) and
Cargo Lamp
1. Cargo Lamp Bulbs
2. Center High-MountedStoplamp (CHMSL) Bulb
To replace one of these bulbs:
1. Remove the two screws and lift off the lamp assembly.
2. Turn the bulb socket counterclockwise and pull it
straight out.
3. Pull the bulb straight out from the socket.
4. Replace the bulb and reverse Steps 1–3 to reinstall.
Electrical System
Electrical System
Overload
The vehicle has fuses to protect
against an electrical system
overload. Fuses also protect power
devices in the vehicle.
Replace a bad fuse with a new one
of the identical size and rating.
If there is a problem on the road and
a fuse needs to be replaced, there
is a fuse puller in the Engine
Compartment Fuse Block. Replace
the fuse as soon as possible with
one of the same amperage rating.
Headlamp Wiring
An electrical overload may cause
the lamps to go on and off, or in
some cases to remain off. Have the
headlamp wiring checked right away
if the lamps go on and off or
remain off.
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272 Vehicle Care
Engine Compartment
Fuse Block
If the vehicle has a diesel engine,
see the Duramax diesel
supplement.
The engine compartment fuse block
is in the engine compartment, on
the driver side of the vehicle.
Lift the cover to access the fuse
block.
Caution
Spilling liquid on any electrical
component on the vehicle may
damage it. Always keep the
covers on any electrical
component.
A fuse puller is available inside this
fuse block.
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274 Vehicle Care
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuses Usage
F1 Traction control module power
F2 Engine control module power
F3 Air conditioning clutch
F4 –
F5 Engine control module/ Integrated chassis control
module/Fuel pump power
module
F6 Wipers
F7 Cargo lamp/Bed lighting
F8 Fuel injectors –even
F9 Fuel injectors –odd
F10 Engine control module ignition 1
F11 Oxygen/Mass air flow/ Humidity/Induction air
temperature/Throttle inlet
pressure sensors Fuses Usage
F12 Starter
F13 Traction control module
F14 –
F15 –
F16 –
F17 Front axle actuator
F18 –
F19 Aeroshutters
F20 –
F21 Front blower
F22 Antilock brake system valves
F23 –
F24 Trailer
F25 Transfer case electronic control
F26 Antilock brake system pump
F27 Trailer brake control module
F28 Rear window defogger Fuses Usage
F29 –
F30 Driver heated seat
F31 –
F32 Passenger heated seat
F33 Right headlamp low beam/ FRT right park lamp/Right
front side marker/Right
rear side marker
F34 Fuel pump power module
F35 Integrated chassis control module
F36 Center high-mounted stoplamp
F37 Right high-beam headlamp
F38 Left high-beam headlamp
F39 Rear differential lock actuators
F40 Front differential lock actuators
F41 –
F42 –
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Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 275
FusesUsage
F43 –
F44 –
F45 Vacuum pump
F46 Engine control module ignition 2
F47 Mid park phase lock/ Active fuel management/
Engine oil and canister
purge solenoid(s)/Oxygen
sensor.
F48 Fog lamps
F49 –
F50 Trailer parking lamps
F51 Horn
F52 –
F53 –
F54 –
F55 –
F56 Washer pump
F57 –
F58 – Fuses
Usage
F59 –
F60 Mirrors defogger
F61 –
F62 Canister vent solenoid
F63 –
F64 Trailer reverse lamp
F65 Left trailer stoplamp/Turn signal lamps
F66 Right trailer stoplamp/Turn signal lamps
F67 Electric power steering
F68 –
F69 Battery regulated voltage control
F70 –
F71 –
F72 –
F73 –
F74 Generator
F75 – Relays
Usage
K1 Air conditioning clutch
K2 Starter
K3 –
K4 Wipers speed
K5 Wipers control
K6 Cargo lamp/Bed lighting
K7 Powertrain
K8 –
K9 Rear differential lock actuators
K10 Front differential lock actuators
K11 Center high-mounted
stoplamp
K12 –
K13 Vacuum pump
K14 Trailer parking lamps
K15 Run/Crank
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276 Vehicle Care
RelaysUsage
K16 –
K17 Rear window/Mirror defogger
Instrument Panel Fuse
Block
The instrument panel fuse block is
behind the passenger side cowl side
trim panel. Remove the plastic nut
at the front of the cover, then pull
the cover away from the trim panel
to access the fuse block.
The vehicle may not be equipped
with all of the fuses, relays, and
features shown. Fuses Usage
F1 Run/Crank relay control/ Horn switch/Dome lamps
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Vehicle Care 295
Different Size Tires and
Wheels
If wheels or tires are installed that
are a different size than the original
equipment wheels and tires, vehicle
performance, including its braking,
ride and handling characteristics,
stability, and resistance to rollover
may be affected. If the vehicle has
electronic systems such as antilock
brakes, rollover airbags, traction
control, electronic stability control,
or All-Wheel Drive, the performance
of these systems can also be
affected.
{Warning
If different sized wheels are used,
there may not be an acceptable
level of performance and safety if
tires not recommended for those
wheels are selected. This
increases the chance of a crash
and serious injury. Only use GM
specific wheel and tire systems(Continued)
Warning (Continued)
developed for the vehicle, and
have them properly installed by a
GM certified technician.
See Buying New Tires 0293 and
Accessories and Modifications
0 241.
Uniform Tire Quality
Grading
The following information relates
to the system developed by the
United States National Highway
Traffic Safety Administration
(NHTSA), which grades tires by
treadwear, traction, and
temperature performance. This
applies only to vehicles sold in
the United States. The grades
are molded on the sidewalls of
most passenger car tires. The
Uniform Tire Quality Grading
(UTQG) system does not apply
to deep tread, winter tires, compact spare tires, tires with
nominal rim diameters of
10 to 12 inches (25 to 30 cm),
or to some limited-production
tires.
While the tires available on
General Motors passenger cars
and light trucks may vary with
respect to these grades, they
must also conform to federal
safety requirements and
additional General Motors Tire
Performance Criteria (TPC)
standards.
Quality grades can be found
where applicable on the tire
sidewall between tread shoulder
and maximum section width. For
example:
Treadwear 200 Traction AA
Temperature A
All Passenger Car Tires Must
Conform to Federal Safety
Requirements In Addition To
These Grades.
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Warning (Continued)
that has been driven on while
severely underinflated or flat.
Have your dealer or an authorized
tire service center repair or
replace the flat tire as soon as
possible.
{Warning
Lifting a vehicle and getting under
it to do maintenance or repairs is
dangerous without the
appropriate safety equipment and
training. If a jack is provided with
the vehicle, it is designed only for
changing a flat tire. If it is used for
anything else, you or others could
be badly injured or killed if the
vehicle slips off the jack. If a jack
is provided with the vehicle, only
use it for changing a flat tire.If a tire goes flat, avoid further tire
and wheel damage by driving slowly
to a level place, well off the road,
if possible. Turn on the hazard
warning flashers. See
Hazard
Warning Flashers 0142.
{Warning
Changing a tire can be
dangerous. The vehicle can slip
off the jack and roll over or fall
causing injury or death. Find a
level place to change the tire. To
help prevent the vehicle from
moving:
1. Set the parking brake firmly.
2. Put an automatictransmission in P (Park) or a
manual transmission in
1 (First) or R (Reverse).
(Continued)
Warning (Continued)
3. For four-wheel-drivevehicles, be sure the
transfer case is in a drive
gear– not in N (Neutral).
4. Turn off the engine and do not restart while the vehicle
is raised.
5. Do not allow passengers to remain in the vehicle.
6. Place wheel blocks, if equipped, on both sides of
the tire at the opposite
corner of the tire being
changed.
When the vehicle has a flat tire (2),
use the following example as a
guide to assist in the placement of
the wheel blocks (1), if equipped.
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300 Vehicle Care
1. Wheel Block (If Equipped)
2. Flat Tire
The following information explains
how to use the jack and change
a tire.
Tire Changing
Removing the Spare Tire and
Tools
Crew Cab
To access and remove the jack and
tools:
1. Lift the rear seat to access thetool bag.
2. Remove the straps to remove the tool bag.
3. Fold the rear seat to access the jack.
4. Turn the knob on the jack (2)
counterclockwise to lower the
jack head to release the jack
from its holder.
5. Turn the wing nut (1) counterclockwise to remove the
jack and wheel blocks.