2020 Chevrolet Colorado Owners Manual - Electrical System

Electrical System

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.

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.

If the wiper motor overheats due to heavy snow or ice, the windshield wipers will stop until the motor cools and will then restart.

Although the circuit is protected from electrical overload, overload due to heavy snow or ice may cause wiper linkage damage.

Always clear ice and heavy snow from the windshield before using the windshield wipers.

If the overload is caused by an electrical problem and not snow or ice, be sure to get it fixed.

The wiring circuits in the vehicle are protected from short circuits by a combination of fuses and circuit breakers. This greatly reduces the chance of damage caused by electrical problems.

To check a fuse, look at the

silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a new one of the identical size and rating.

Fuses of the same amperage can be temporarily borrowed from another fuse location, if a fuse goes out. Replace the fuse as soon as possible.

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. See Engine Compartment Overview

0 227

Lift the cover to access the fuse block.

A fuse puller is available inside this fuse block.

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 ignition/ 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 1

Fuses Usage

F11 Oxygen/Mass air flow/Humidity/ Induction air temperature/ Throttle inlet pressure sensors

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

Fuses Usage

F25 Transfer case electronic control

F26 Antilock brake system pump

F27 Trailer brake control module/ Trailer wiring

F28 Rear window defogger

F29 –

F30 Driver heated seat

F31 –

F32 Passenger heated seat

F33 Right headlamp low beam/Front right park lamp/ Right front side marker/Right rear side marker

F34 Fuel pump power module

F35 Integrated chassis control module

Fuses Usage

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 Front differential lock actuators

K10 Rear differential lock actuators

K11 Center

high-mounted stoplamp

K12 –

K13 Vacuum pump

Relays Usage

K14 Trailer parking lamps

K15 Run/Crank

K16 –

K17 Rear window/Mirror defogger

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

Fuses Usage

F2 –

F3 –

F4 Steering wheel controls

F5 Left headlamp low beam/Front left park lamp/Left front side marker/Left rear side marker

F6 –

F7 –

F8 Mirror window module F9 Instrument panel

cluster

F10 –

F11 Door latches

F12 –

F13 OnStar/HVAC

F14 Radio/Infotainment

Fuses Usage

F15 RAP accessory relay control/Shifter control/ Shifter solenoid/Wiper relay control/Washer pump relay control/ Rear defog relay control

F16 CGM

F17 Left rear side marker/ Right front turn lamp/ Left rear stop lamp/ Left front turn lamp/ Right rear stop lamp

F18 Airbag/Sensing and

diagnostic module/ Automatic occupant sensing module

F19 –

F20 Amplifier

F21 –

F22 –

F23 Data link connector/ USB front

Fuses Usage

F24 HVAC ignition/ Auxiliary heater

F25 Driver door latch F26 –

F27 –

F28 Instrument panel

cluster/Automatic occupant sensing display

F29 Rear vision camera/

Transfer case control module (4WD)/Inside rear view mirror

F30 –

F31 Front camera/Rear park assist

F32 Steering wheel controls backlighting

F33 Heated steering wheel/Spare

F34 Front ventilated seats

Fuses Usage

F35 Park/Reverse/Neutral/ Drive/Low display/ Wireless charging module/USB rear

F36 Discrete logic ignition sensor

F37 –

F38 –

F39 Auxiliary power outlet 2

F40 –

F41 Auxiliary power outlet 1/Cigarette lighter

F42 Left power window F43 Driver power seat F44 Auxillary power outlet F45 Right power window

F46 Passenger power seat

Relays Usage

K1 Retained accessory power

Relays Usage

K2 Run/Crank

K3 –