2018 CHEVROLET COLORADO air conditioning

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349743) - 2018 - crc - 10/12/17
292 Vehicle Care
Warning (Continued)
including the pressure cap, is hot.
Wait for the cooling system and
pressure cap to cool.
If No Steam Is Coming from
the Engine Compartment
If an engine overheat warning is
displayed but no steam can be seen
or heard, the problem may not be
too serious. Sometimes the engine
can get a little too hot when the
vehicle:
.Climbs a long hill on a hot day.
. Stops after high-speed driving.
. Idles for long periods in traffic.
If the overheat warning is displayed
with no sign of steam: 1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and to the
highest fan speed. Open the
windows as necessary. 3. When it is safe to do so, pull off
the road, shift to P (Park) or
N (Neutral), and let the
engine idle.
If the engine coolant temperature
gauge is no longer in the overheat
zone, the vehicle can be driven.
Continue to drive the vehicle slowly
for about 10 minutes. Keep a safe
distance from the vehicle in front.
If the warning does not come back
on, continue to drive normally and
have the cooling system checked
for proper fill and function.
If the warning continues, pull over,
stop, and park the vehicle
right away.
If there is no sign of steam, idle the
engine for three minutes while
parked. If the warning is still
displayed, turn off the engine until it
cools down.
Engine Fan
If the vehicle has a clutched engine
cooling fan, when the clutch is
engaged, the fan spins faster to
provide more air to cool the engine. In most everyday driving conditions,
the fan is spinning slower and the
clutch is not fully engaged. This
improves fuel economy and reduces
fan noise. Under heavy vehicle
loading, trailer towing, and/or high
outside temperatures, the fan speed
increases as the clutch more fully
engages, so an increase in fan
noise may be heard. This is normal
and should not be mistaken as the
transmission slipping or making
extra shifts. It is merely the cooling
system functioning properly. The fan
will slow down when additional
cooling is not required and the
clutch disengages.
This fan noise may also be heard
when starting the engine. It will go
away as the fan clutch partially
disengages.
If the vehicle has electric cooling
fan(s), the fans may be heard
spinning at low speed during most
everyday driving. The fans may turn
off if no cooling is required. Under
heavy vehicle loading, trailer towing,
high outside temperatures,
or operation of the air conditioning

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349743) - 2018 - crc - 10/12/17
308 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 (if
equipped)
F8 Fuel injectors–even
F9 Fuel injectors–odd
F10 Engine control module 1 Fuses Usage
F11 Miscellaneous 1/ Ignition
F12 Starter
F13 Traction control module
F14 –
F15 –
F16 –
F17 Front axle actuator
F18 –
F19 –
F20 –
F21 Front blower
F22 Antilock brake system valves
F23 –
F24 Trailer
F25 Transfer case electronic control
F26 Antilock brake system pump Fuses Usage
F27 Trailer brake control module (if
equipped)/Trailer
wiring
F28 Rear window defogger
F29 –
F30 Driver heated seat
F31 –
F32 Passenger heated seat
F33 Body control module 3
F34 Fuel pump power module
F35 Integrated chassis control module (if
equipped)
F36 Center high-mounted
stoplamp
F37 Right high-beam headlamp

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349743) - 2018 - crc - 10/12/17
Vehicle Care 309
FusesUsage
F38 Left high-beam headlamp
F39 Rear differential lock
actuators (ZR2
only)
F40 Front differential lock
actuators (ZR2
only)
F41 –
F42 –
F43 –
F44 Vacuum pump
F45 –
F46 Engine control module 2
F47 Miscellaneous 2/ Ignition
F48 Fog lamps (if equipped)
F49 – Fuses
Usage
F50 Trailer parking lamps
F51 Horn
F52 –
F53 –
F54 –
F55 –
F56 Washer pump
F57 –
F58 –
F59 –
F60 Mirrors defogger
F61 –
F62 Canister vent solenoid
F63 –
F64 Trailer reverse lamp
F65 Left trailer stoplamp/Turn
signal lamps Fuses
Usage
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

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349743) - 2018 - crc - 10/12/17
Vehicle Care 317
(2) Tire Width:The three-digit
number indicates the tire section
width in millimeters from
sidewall to sidewall.
(3) Aspect Ratio
:A two-digit
number that indicates the tire
height-to-width measurements.
For example, if the tire size
aspect ratio is 60, as shown in
item 3 of the illustration, it would
mean that the tire's sidewall is
60 percent as high as it is wide.
(4) Construction Code
:A letter
code is used to indicate the type
of ply construction in the tire.
The letter R means radial ply
construction; the letter D means
diagonal or bias ply
construction; and the letter B
means belted-bias ply
construction.
(5) Rim Diameter
:Diameter of
the wheel in inches.
(6) Service Description
:These
characters represent the load
index and speed rating of the tire. The load index represents
the load carrying capacity a tire
is certified to carry. The speed
rating is the maximum speed a
tire is certified to carry a load.
Tire Terminology and
Definitions
Air Pressure:The amount of
air inside the tire pressing
outward on each square inch of
the tire. Air pressure is
expressed in kPa (kilopascal)
or psi (pounds per square inch).
Accessory Weight
:The
combined weight of optional
accessories. Some examples of
optional accessories are
automatic transmission, power
windows, power seats, and air
conditioning.
Aspect Ratio
:The relationship
of a tire's height to its width. Belt
:A rubber coated layer of
cords between the plies and the
tread. Cords may be made from
steel or other reinforcing
materials.
Bead
:The tire bead contains
steel wires wrapped by steel
cords that hold the tire onto
the rim.
Bias Ply Tire
:A pneumatic tire
in which the plies are laid at
alternate angles less than
90 degrees to the centerline of
the tread.
Cold Tire Pressure
:The
amount of air pressure in a tire,
measured in kPa (kilopascal)
or psi (pounds per square inch)
before a tire has built up heat
from driving. See Tire Pressure
0 320.
Curb Weight
:The weight of a
motor vehicle with standard and
optional equipment including the

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349743) - 2018 - crc - 10/12/17
Service and Maintenance 375
UsageFluid/Lubricant
Key Lock Cylinders, Hood Hinges, Body Door Hinge Pins, Tailgate
Hinge and Linkage, Tailgate Handle Pivot Points, Hinges, Latch BoltLinkage, and Fuel Door Hinge Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
Manual Transmission DEXRON-VI Automatic Transmission Fluid.
Transfer Case (If Equipped With Four-Wheel Drive) DEXRON-VI Automatic Transmission Fluid.
Weatherstrip Conditioning Weatherstrip Lubricant (GM Part No. 3634770, in Canada 10953518) or equivalent.
Weatherstrip Squeaks Synthetic Grease with Teflon, Superlube (GM Part No. 12371287, in Canada 10953437).
Windshield Washer Automotive windshield washer fluid that meets regional freeze protection requirements.
Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can be obtained from your dealer.
Part GM Part Number ACDelco Part Number
Engine Air Cleaner/Filter 94775933 A3195C

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349743) - 2018 - crc - 10/12/17
Technical Data 379
Vehicle Data
Capacities and Specifications
The following approximate capacities are given in metric and English conversions. SeeRecommended Fluids and
Lubricants 0374.
If the vehicle has a diesel engine, see the Duramax diesel supplement.
Application Capacities
Metric English
Air Conditioning Refrigerant For the air conditioning system refrigerant type and charge amount, see the refrigerant label under thehood. See your dealer for more information.
Cooling System
2.5L L4 9.1 L 9.6 qt
3.6L V6 10.6 L 11.2 qt
Engine Oil with Filter
2.5L L4 4.7 L 5.0 qt
3.6L V6 5.7 L 6.0 qt
Fuel Tank 80 L 21 gal
Transfer Case Fluid 1.9 L 2.0 qt
Wheel Nut Torque 190 Y140 lb ft
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this
manual. Recheck fluid level after filling.

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349743) - 2018 - crc - 10/12/17
408 Index
IndexA
Accessories andModifications . . . . . . . . . . . . . . . . . . 276
Accessory Power . . . . . . . . . . . . . . . 220
Add-On Electrical Equipment . . . 272
Additional Information OnStar . . . . . . . . . . . . . . . . . . . . . . . 402
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . 371
Adjustments
Lumbar, Front Seats . . . . . . . . . . . . 48
Agreements Trademarks and License . . . . . 185
Air Cleaner/Filter, Engine . . . . . . . 286
Air Conditioning . . . . . . . . . . . 191, 193
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . 196
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 195
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . 72
How Does an AirbagRestrain? . . . . . . . . . . . . . . . . . . . . . 64
Passenger Sensing System . . . . 66
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 64
What Will You See after an Airbag Inflates? . . . . . . . . . . . . . . . 65 Airbag System (cont'd)
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 63
Where Are the Airbags? . . . . . . . . 62
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . 71
Passenger Status Indicator . . . .119
Readiness Light . . . . . . . . . . . . . . .119
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . 70
System Check . . . . . . . . . . . . . . . . . . 60
Alarm Vehicle Security . . . . . . . . . . . . . . . . 36
All-Season Tires . . . . . . . . . . . . . . . . 313
All-Terrain Tires . . . . . . . . . . . . . . . . . 314
AM-FM Radio . . . . . . . . . . . . . . . . . . . 154
Antenna Multi-band . . . . . . . . . . . . . . . . . . . . 158
Antilock Brake System (ABS) . . . 238 Warning Light . . . . . . . . . . . . . . . . . 123
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 353
Interior . . . . . . . . . . . . . . . . . . . . . . . . 358
Apple CarPlay and Android Auto . . . . . . . . . . . . . . . . . . 184
Assistance Program, Roadside . . . . . . . . . . . . . . . . . . . . . . 386

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349743) - 2018 - crc - 10/12/17
410 Index
Center High-MountedStoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . . . . . 304
Chains, Tire . . . . . . . . . . . . . . . . . . . . 332
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . .110
Charging System Light . . . . . . . . . 120
Check
Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 120
Ignition Transmission Lock . . . 299
Child Restraints Infants and Young Children . . . . . 74
Lower Anchors and Tethersfor Children . . . . . . . . . . . . . . . . . . . 80
Older Children . . . . . . . . . . . . . . . . . . 73
Securing . . . . . . . . . . . . . . . . . . . . 94, 99
Systems . . . . . . . . . . . . . . . . . . . . . . . . 77
Circuit Breakers . . . . . . . . . . . . . . . . 305
Cleaning Exterior Care . . . . . . . . . . . . . . . . . 353
Interior Care . . . . . . . . . . . . . . . . . . 358
Climate Control Systems . . . . . . . 191 Air Conditioning . . . . . . . . . . . . . . 191
Automatic . . . . . . . . . . . . . . . . . . . . . 193
Heating . . . . . . . . . . . . . . . . . . . . . . . 191
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Cluster, Instrument . . . . . . . . 112, 114 Clutch, Hydraulic . . . . . . . . . . . . . . . 285
Collision Damage Repair . . . . . . . 389
Compact Spare Tire . . . . . . . . . . . . 343
Compartments
Storage . . . . . . . . . . . . . . . . . . . . . . . 103
Compass . . . . . . . . . . . . . . . . . . . . . . . 108
Connections OnStar . . . . . . . . . . . . . . . . . . . . . . . 399
Control Hill Descent . . . . . . . . . . . . . . . . . . 243
Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 240
Control Light Hill Descent . . . . . . . . . . . . . . . . . . 124
Control of a Vehicle . . . . . . . . . . . . . 199
Convex Mirrors . . . . . . . . . . . . . . . . . . 38
Coolant Engine Temperature Gauge . . .117
Cooling . . . . . . . . . . . . . . . . . . . . 191, 193
Cooling System . . . . . . . . . . . . . . . . . 287
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . 388
Cruise Control . . . . . . . . . . . . . . . . . . 247 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Cupholders . . . . . . . . . . . . . . . . . . . . . 103
Customer Assistance . . . . . . . . . . . 385
Offices . . . . . . . . . . . . . . . . . . . . . . . . 384 Customer Assistance (cont'd)
Text Telephone (TTY)
Users . . . . . . . . . . . . . . . . . . . . . . . 385
Customer Information
Service PublicationsOrdering Information . . . . . . . . 391
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . 382
D
Damage Repair, Collision . . . . . . . 389
Danger, Warning, and Caution . . . . 2
Data CollectionInfotainment System . . . . . . . . . . 395
OnStar . . . . . . . . . . . . . . . . . . . . . . . 395
Data Recorders, Event . . . . . . . . . 394
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 144
Defensive Driving . . . . . . . . . . . . . . . 199
Delayed Locking . . . . . . . . . . . . . . . . . 34
Diagnostics
OnStar . . . . . . . . . . . . . . . . . . . . . . . 401
Differential, Limited-Slip . . . . . . . . 245
Distracted Driving . . . . . . . . . . . . . . . 198
Dome Lamps . . . . . . . . . . . . . . . . . . . 147
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . 128
Delayed Locking . . . . . . . . . . . . . . . . 34