Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSGMC2013YUKON DENALI AWD V8-6.2LREPAIR AND DIAGNOSISBODY AND FRAMEFRAMETRAILER TOWING RELAYSERVICE AND REPAIRTRAILER BRAKE CONTROL RELAY REPLACEMENT (2500)
2013 GMC Yukon Denali AWD V8-6.2L
Trailer Brake Control Relay Replacement (2500)
2013 GMC Yukon Denali AWD V8-6.2LSECTION Trailer Brake Control Relay Replacement (2500)
Trailer Brake Control Relay Replacement (2500)
Removal Procedure
1. Turn the ignition switch to the OFF position.
Note:
Do not remove the spare wheel hoist.
2. Remove the spare tire and wheel assembly. Refer to Spare Wheel Hoist Replacement Service and Repair.
3. Disconnect the trailer brake control relay electrical connector.
Note:
It is not necessary to completely remove the bolts.
4. Loosen, but do not remove, the trailer brake control relay bolts (1).
5. Slide the trailer brake control relay (1) toward the rear of the vehicle and remove the trailer brake control relay.
Installation Procedure
1. If installing a new trailer brake control relay, hand start the 2 trailer brake control relay bolts.
2. Position the trailer brake control relay to the frame rail.
3. Slide the trailer brake control relay (1) forward on the frame rail.
Caution:
Refer to Fastener Caution Fastener Caution.
4. Tighten the trailer brake control relay bolts (1) to 6 Nm (53 lb in).
5. Connect the trailer brake control relay electrical connector.
6. Install the spare tire and wheel assembly. Refer to Spare Wheel Hoist Replacement Service and Repair.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.