GMC 2010 Canyon Crew Cab Owner's Manual page 390

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
6-114
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,
CRUISE
Transfer Case 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)
Usage