Chevrolet 2010 Colorado Owner's Manual page 377

The trailer brake relay is located on the bottom side of
the battery harness.
Fuses
Oxygen Sensors, Air Injection
O2 SNSR
Reactor (AIR) Relay
Air Conditioning Control Head,
A/C
Power Seats
A/C CMPRSR Air Conditioning Compressor
Antilock Brake System (ABS), ABS
ABS Module, Four-Wheel Drive, Gravity
Sensor
Usage
Fuses
ABS 1 ABS 1 (ABS Logic)
ABS 2 ABS 2 (ABS Pump)
AUX PWR 1 Accessory Power 1
AUX PWR 2 Accessory Power 2
BCK/UP Back-up Lights
BLWR Climate Control Fan
CLSTR Cluster
CNSTR VENT Fuel Canister Vent Solenoid
Cruise Control Switch, Inside
Rearview Mirror, Transfer Case
CRUISE
Control Module, Brake Switch,
Clutch Disable
DR/LCK Power Door Locks (If Equipped)
DRL Daylight Running Lamps
Mass Air Flow (MAF) Sensor,
ERLS Can Purge Solenoid, Air Injector
Reactor (AIR) Relay
ETC Electronic Throttle Control (ETC)
FOG/LAMP Fog Lamps (If Equipped)
Front Park/Turn Lamps, Driver and
FRT PRK
Passenger Side Power Window
LAMP
Switches Lighting
FRT/AXLE Front Axle Actuator
FSCM Fuel System Control Module
Usage
6-111