check engine CHEVROLET COLORADO 2020 Service Manual

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13566640) - 2020 - CRC - 9/30/19
Service and Maintenance 315
Maintenance
Schedule
Owner Checks and Services
At Each Fuel Stop
.Check the engine oil level. See
Engine Oil 0230.
Once a Month
. Check the tire inflation
pressures, including the spare.
See Tire Pressure 0268.
. Inspect the tires for wear. See
Tire Inspection 0275.
. Check the windshield washer
fluid level. See Washer Fluid
0 241.
Engine Oil Change
When the CHANGE ENGINE OIL
SOON message displays, have the
engine oil and filter changed within
the next 1 000 km (600 mi). If driven
under the best conditions, the
engine oil life system may not
indicate the need for vehicle service
for up to a year. The engine oil and
filter must be changed at least once a year and the oil life system must
be reset. Your trained dealer
technician can perform this work.
If the engine oil life system is reset
accidentally, service the vehicle
within 5 000 km (3,000 mi) since the
last service. Reset the oil life
system when the oil is changed.
See
Engine Oil Life System 0232.
Extended Idle Use
When the vehicle is used in a way
that requires extended idle time,
one hour of use shall be deemed
the same as 33 miles. See Driver
Information Center (DIC) (Base
Level) 0114 or
Driver Information Center (DIC)
(Uplevel) 0116 for hourmeter.
Passenger Compartment Air
Filter
The passenger compartment air
filter removes dust, pollen, and
other airborne irritants from outside
air that is pulled into the vehicle.
The filter should be replaced as part
of routine scheduled maintenance.
Inspect the passenger compartment
air filter every 36 000 km (22,500 mi) or two years, whichever
comes first. Replace if necessary.
More frequent replacement may be
needed if the vehicle is driven in
areas with heavy traffic, areas with
poor air quality, or areas with high
dust levels. Replacement may also
be needed if there is a reduction in
air flow, excessive window fogging,
or odors.
Air Conditioning Desiccant
(Replace Every Seven Years)
The air conditioning system requires
maintenance every seven years.
This service requires replacement of
the desiccant to help the longevity
and efficient operation of the air
conditioning system. This service
can be complex. See your dealer.
Tire Rotation and Required
Services Every 12 000 km
(7,500 mi)
Rotate the tires, if recommended for
the vehicle, and perform the
following services. See
Tire
Rotation 0275.

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13566640) - 2020 - CRC - 9/30/19
316 Service and Maintenance
.Check engine oil level and oil
life percentage. If needed,
change engine oil and filter, and
reset oil life system. See Engine
Oil 0230 and
Engine Oil Life System 0232.
. Check engine coolant level. See
Cooling System 0236.
. Check windshield washer fluid
level. See Washer Fluid 0241.
. Check tire inflation pressures,
including the spare. See Tire
Pressure 0268.
. Inspect tire wear. See Tire
Inspection 0275.
. Visually check for fluid leaks.
. Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter
0 234.
. Inspect brake system. See
Exterior Care 0303.
. Visually inspect steering,
suspension, and chassis
components for damage,
including cracks or tears in the
rubber boots, loose or missing parts, or signs of wear at least
once a year. See
Exterior Care
0 303.
. Inspect power steering for
proper attachment, connections,
binding, leaks, cracks,
chafing, etc.
. Visually inspect halfshafts and
driveshafts for excessive wear,
lubricant leaks, and/or damage
including: tube dents or cracks,
constant velocity joint or
universal joint looseness,
cracked or missing boots, loose
or missing boot clamps, center
bearing excessive looseness,
loose or missing fasteners, and
axle seal leaks.
. Check restraint system
components. See Safety System
Check 042.
. Visually inspect fuel system for
damage or leaks.
. Visually inspect exhaust system
and nearby heat shields for
loose or damaged parts.
. Lubricate body components. See
Exterior Care 0303. .
Check starter switch. See Starter
Switch Check 0245.
. Check automatic transmission
shift lock control function. See
Automatic Transmission Shift
Lock Control Function Check
0246.
. Check ignition transmission lock.
See Ignition Transmission Lock
Check 0246.
. Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check
0 246.
. Check accelerator pedal for
damage, high effort, or binding.
Replace if needed.
. Visually inspect gas strut for
signs of wear, cracks, or other
damage. Check the hold open
ability of the strut. If the hold
open is low, service the gas
strut. See Gas Strut(s) 0248.
. Verify spare tire key lock
operation and lubricate as
needed. See Tire Changing
0 284.

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13566640) - 2020 - CRC - 9/30/19
318 Service and Maintenance
Maintenance Schedule
Additional Required
Services - Normal12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi 180 000 km/112,500 mi
192 000 km/120,000 mi
204 000 km/127,500 mi
216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires and perform Required Services.
Check engine oil level and oil life percentage.
Change engine oil and filter, if needed.@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (1)@ @@@@@
Replace engine air cleaner filter. (2)@ @@
Inspect evaporative control system. (3)@@@
Replace spark plugs. Inspect spark plug wires
and/or boots.@
Change transfer case fluid, if equipped with
4WD. (4)@
Drain and fill engine cooling system. (5)@
Visually inspect accessory drive belts. (6)@
Replace brake fluid. (7)
Replace windshield wiper blades. (8)
@ @ @ @ @ @ @ @ @ @
Replace hood gas struts and tailgate
dampener. (9)@ @
Replace air conditioning desiccant. (10)

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13566640) - 2020 - CRC - 9/30/19
Service and Maintenance 319
Footnotes—Maintenance
Schedule Additional Required
Services - Normal
(1) Or every two years, whichever
comes first. More frequent
passenger compartment air filter
replacement may be needed if
driving in areas with heavy traffic,
poor air quality, high dust levels,
or environmental allergens.
Passenger compartment air filter
replacement may also be needed if
there is reduced airflow, window
fogging, or odors. Your GM dealer
can help determine when to replace
the filter.
(2) Or every four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
See Engine Air Cleaner/Filter 0234.
(3) Visually check all fuel and vapor
lines and hoses for proper
attachment, connection, routing, and
condition.
(4) Do not directly power wash the
transfer case and/or front/rear axle
output seals. High pressure water
can overcome the seals and contaminate the transfer case fluid.
Contaminated fluid will decrease the
life of the transfer case and/or axles
and should be replaced.
(5)
Or every five years, whichever
comes first. See Cooling System
0 236.
(6) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage;
replace, if needed.
(7) Replace brake fluid every five
years. See Brake Fluid 0242.
(8) Or every 12 months, whichever
comes first. See Wiper Blade
Replacement 0247.
(9) Or every 10 years, whichever
comes first. See Gas Strut(s)0248.
(10) Replace air conditioning
desiccant every seven years.

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13566640) - 2020 - CRC - 9/30/19
320 Service and Maintenance
Maintenance Schedule
Additional Required
Services - Severe12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi 180 000 km/112,500 mi
192 000 km/120,000 mi
204 000 km/127,500 mi
216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires and perform Required Services.
Check engine oil level and oil life percentage.
Change engine oil and filter, if needed.@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (1)@ @@@@@
Replace engine air cleaner filter. (2)@ @@
Inspect evaporative control system. (3)@@@
Replace spark plugs. Inspect spark plug wires
and/or boots.@
Change automatic transmission fluid and filter.@@@
Change transfer case fluid, if equipped with
4WD. (4)@@@
Drain and fill engine cooling system. (5)@
Visually inspect accessory drive belts. (6)@
Replace brake fluid. (7)
Replace windshield wiper blades. (8)
@ @ @ @ @ @ @ @ @ @
Replace hood gas struts and tailgate
dampener. (9)@ @
Replace air conditioning desiccant. (10)

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13566640) - 2020 - CRC - 9/30/19
Service and Maintenance 321
Footnotes—Maintenance
Schedule Additional Required
Services - Severe
(1) Or every two years, whichever
comes first. More frequent
passenger compartment air filter
replacement may be needed if
driving in areas with heavy traffic,
poor air quality, high dust levels,
or environmental allergens.
Passenger compartment air filter
replacement may also be needed if
there is reduced airflow, window
fogging, or odors. Your GM dealer
can help determine when to replace
the filter.
(2) Or every four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
See Engine Air Cleaner/Filter 0234.
(3) Visually check all fuel and vapor
lines and hoses for proper
attachment, connection, routing, and
condition.
(4) Do not directly power wash the
transfer case and/or front/rear axle
output seals. High pressure water
can overcome the seals and contaminate the transfer case fluid.
Contaminated fluid will decrease the
life of the transfer case and/or axles
and should be replaced.
(5)
Or every five years, whichever
comes first. See Cooling System
0 236.
(6) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage;
replace, if needed.
(7) Replace brake fluid every five
years. See Brake Fluid 0242.
(8) Or every 12 months, whichever
comes first. See Wiper Blade
Replacement 0247.
(9) Or every 10 years, whichever
comes first. See Gas Strut(s)0248.
(10) Replace air conditioning
desiccant every seven years.Special Application
Services
. Severe Commercial Use
Vehicles Only: Lubricate chassis
components every oil change.
. Have underbody flushing service
performed. See "Underbody
Maintenance" in Exterior Care
0 303.

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13566640) - 2020 - CRC - 9/30/19
322 Service and Maintenance
Additional
Maintenance and Care
Your vehicle is an important
investment and caring for it properly
may help to avoid future costly
repairs. To maintain vehicle
performance, additional
maintenance services may be
required.
It is recommended that your dealer
perform these services—their
trained dealer technicians know
your vehicle best. Your dealer can
also perform a thorough
assessment with a multi-point
inspection to recommend when your
vehicle may need attention.
The following list is intended to
explain the services and conditions
to look for that may indicate
services are required.
Battery
The 12-volt battery supplies power
to start the engine and operate any
additional electrical accessories. .
To avoid break-down or failure to
start the vehicle, maintain a
battery with full cranking power.
. Trained dealer technicians have
the diagnostic equipment to test
the battery and ensure that the
connections and cables are
corrosion-free.
Belts
. Belts may need replacing if they
squeak or show signs of
cracking or splitting.
. Trained dealer technicians have
access to tools and equipment
to inspect the belts and
recommend adjustment or
replacement when necessary.
Brakes
Brakes stop the vehicle and are
crucial to safe driving.
. Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping. .
Trained dealer technicians have
access to tools and equipment
to inspect the brakes and
recommend quality parts
engineered for the vehicle.
Fluids
Proper fluid levels and approved
fluids protect the vehicle’s systems
and components. See
Recommended Fluids and
Lubricants 0325 for GM approved
fluids.
. Engine oil and windshield
washer fluid levels should be
checked at every fuel fill.
. Instrument cluster lights may
come on to indicate that fluids
may be low and need to be
filled.
Hoses
Hoses transport fluids and should
be regularly inspected to ensure
that there are no cracks or leaks.
With a multi-point inspection, your
dealer can inspect the hoses and
advise if replacement is needed.

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13566640) - 2020 - CRC - 9/30/19
Technical Data 331
ApplicationCapacities
Metric English
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this
manual. Recheck fluid level after filling.
*Engine cooling system capacity values are based on the entire cooling system and its components.
Engine Specifications
Engine VIN CodeSpark Plug Gap
2.5L L4 Engine A0.95–1.10mm (0.037–
0.043 in)
3.6L V6 Engine N0.80–0.90mm (0.031–
0.035 in)
Spark plug gaps are preset by the manufacturer. Re-gapping the spark plug is not recommended and can damage
the spark plug.

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13566640) - 2020 - CRC - 9/30/19
356 Index
IndexA
Accessories andModifications . . . . . . . . . . . . . . . . . . 224
Accessory Power . . . . . . . . . . . . . . . 164
Active Fuel Management . . . . . . . 166
Add-On Electrical Equipment . . . 220
Additional Information OnStar . . . . . . . . . . . . . . . . . . . . . . . 349
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . 322
Adjustments Lumbar, Front Seats . . . . . . . . . . . . 30
Air Cleaner/Filter, Engine . . . . . . . 234
Air Conditioning . . . . . . . . . . . 133, 135
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . 139
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 138
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . 55
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . . . 48
Passenger Sensing System . . . . 50
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 48
What Will You See after an Airbag Inflates? . . . . . . . . . . . . . . . 48
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 47 Airbag System (cont'd)
Where Are the Airbags? . . . . . . . . 45
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . 54
Passenger Status Indicator . . . 104
Readiness Light . . . . . . . . . . . . . . 104
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . 54
System Check . . . . . . . . . . . . . . . . . . 44
Alarm Vehicle Security . . . . . . . . . . . . . . . . 19
All-Season Tires . . . . . . . . . . . . . . . . 262
All-Terrain Tires . . . . . . . . . . . . . . . . . 263
Antilock Brake System (ABS) . . . 180 Warning Light . . . . . . . . . . . . . . . . . 108
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 303
Interior . . . . . . . . . . . . . . . . . . . . . . . . 308
Assistance Program, Roadside . . . . . . . . . . . . . . . . . . . . . . 337
Assistance Systems for Parking and Backing . . . . . . . . . . 192
Automatic Climate Control System . . . . . . . 135
Door Locks . . . . . . . . . . . . . . . . . . . . . 17
Headlamp System . . . . . . . . . . . . 126
Transmission . . . . . . . . . . . . . . . . . 168

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13566640) - 2020 - CRC - 9/30/19
Index 357
Automatic (cont'd)Transmission Fluid . . . . . . . . . . . 234
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 171
Shift Lock Control FunctionCheck . . . . . . . . . . . . . . . . . . . . . . . 246
Axle
Locking Front . . . . . . . . . . . . . . . . . 187
Axle, Front . . . . . . . . . . . . . . . . . . . . . . 245
Axle, Rear . . . . . . . . . . . . . . . . . . . . . . 245
B
Battery Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . 131
Load Management . . . . . . . . . . . . 130
Power Protection . . . . . . . . . . . . . 131
Battery - North America . . . . 243, 295
Blade Replacement, Wiper . . . . . 247
Blind Spot Mirrors . . . . . . . . . . . . . . . 22
Brake System Warning Light . . . . . . . . 108
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 242 Antilock . . . . . . . . . . . . . . . . . . . . . . . 180
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 181
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Parking . . . . . . . . . . . . . . . . . . . . . . . 181
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 143 Break-In, New Vehicle . . . . . . . . . . 159
Bulb Replacement
Center High-MountedStoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . . . 252
Halogen Bulbs . . . . . . . . . . . . . . . . 249
Headlamp Aiming . . . . . . . . . . . . . 249
Headlamps . . . . . . . . . . . . . . . . . . . 249
Headlamps, Front Turn Signal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . . . 250
Taillamps, Turn Signal, Stoplamps, and Back-up
Lamps . . . . . . . . . . . . . . . . . . . . . . 250
Buying New Tires . . . . . . . . . . . . . . . 277
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . 93
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 224
California Proposition
65 Warning . . . . . . . . . .223, 243, 295, Back Cover
Canadian Vehicle Owners . . . . . . . . 2
Capacities and
Specifications . . . . . . . . . . . . . . . . . 330 Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . 167
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . 18
Winter Driving . . . . . . . . . . . . . . . . 151
Caution, Danger, and Warning . . . . 2
Center Console Storage . . . . . . . . . 89
Center High-Mounted Stoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . . . . . 252
Chains, Tire . . . . . . . . . . . . . . . . . . . . 281
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . . . 94
Charging System Light . . . . . . . . . 105
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 106
Ignition Transmission Lock . . . 246
Child Restraints Infants and Young Children . . . . . 58
Lower Anchors and Tethersfor Children . . . . . . . . . . . . . . . . . . . 63
Older Children . . . . . . . . . . . . . . . . . . 56
Securing . . . . . . . . . . . . . . . . . . . . 79, 84
Systems . . . . . . . . . . . . . . . . . . . . . . . . 60
Circuit Breakers . . . . . . . . . . . . . . . . 253
Cleaning
Exterior Care . . . . . . . . . . . . . . . . . 303
Interior Care . . . . . . . . . . . . . . . . . . 308