Expert Answers about GMC Yukon

• Can the Ends of Step Treads On Aries AeroTread Running Boards For a 2004 GMC Yukon Denali Be Glued?
• I reached out to Aries and they informed me the plastic step for the AeroTread Running Boards on your 2004 GMC Yukon Denali AWD are held in place by slots in the track. While they said you should be able to glue it back down the ends will surely pop back up again over time. As long as your mounting brackets are in good condition you can replace the steps themselves. We have the Stainless Steel # AA2051876 or Black Stainless # AA2051976 which are the 76" steps your Yukon will call for.
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• Troubleshooting Voyager Brake Controller Installation in 2015 GMC Yukon
• If you have no green light on your Voyager Brake Controller # 39510 when your trailer is connected the most common causes are either corrosion on one or both of the trailer connectors, or a loose power or ground connection to the controller. First inspect both the trailer plug and the socket on the Yukon for any signs of even slight discoloration on the metal contact surfaces. Even slight discoloration can indicate oxidation/corrosion that could be interfering with the controller sensing...
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• Troubleshooting a Brake Controller That Does Not Work with the Brake Pedal on a 2011 GMC Yukon
• Since the trailer brakes work with the manual override, it would seem that the problem is with the stop light switch circuit. This would be the red wire from the brake controller. It should be spliced to either a light blue or orange wire from your Yukon's brake controller harness. I recommend checking that connection to make sure it did not come loose and make sure the wire was not damaged at all. The brake controller has power, so I do not think the fuse is the problem, but if you have...
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• With Turn Signal and Brake Lights On All Trailer Lights Flash when Connected to 2007 GMC Yukon
• It sounds like there may be a ground problem or a possible overload. Ground problems and overloads normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should...
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• Does Red Wire of Prodigy Brake Controller Need to Ground When Brakes aren't Applied
• The red wire of a brake controller like the Prodigy P3 part # 90195 will need 12 volts when the brakes are applied but it does not need to ground or anything when there isn't 12 volts present.
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• No Power To Cameras On Travel Trailer With Furrion Camera System Using 2021 GMC
• There is some accuracy to what you read on the forum. But no worries, we can provide a solution. You simply need the 7-Way Vehicle Power Adapter w/ Power Switch for Furrion RV Observation Camera, # FR87PR. This will resolve your connection issues between the Furrion Vision S Wireless RV Observation Camera System w/ Side Marker Light Cameras & 5" Screen, # FCE48TASL-05. It plugs directly into the 7-way connector on your 2021 GMC Yukon then to your trailer wiring, acting as a connector between...
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• Troubleshooting Brake Controller that When Connected Activates Vehicle Brake Lights
• Sounds like your brake controller has gone bad and is backfeeding power onto the stoplight switch which is then activating the brake lights of your vehicle. If you sever the red wire of the controller and then test the end connected to the brake controller and there is 12 volts there then you know the brake controller has shorted out and needs to be replaced. Otherwise the 12 volt power source wire (black) is shorting out to this circuit and would need to be fixed as well. I attached...
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• Why is My Primus Brake Controller Activating at Highway Speeds?
• After talking to the manufacturer this problem can be caused by the Primus IQ part # TK90160 not being mounted level in the vehicle. They suggested to unplug the controller for approximately ten minutes , level the controller in the vehicle, clean your connection points, and re-install the controller.
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• Prodigy P2 Brake Controller Seems to be Getting Weaker
• It is possible that the P2 is getting dirty on the inside. To clean the contacts you can fully apply the manual override and let it snap back into place several times. You might also inspect the connection on the red wire to make sure it is secure. If the controller is tilted or turned to one side that can also affect its performance. It could have been bumped on accident and a slight change can have a larger affect.
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• Troubleshooting Brake Controller that Only Works with Override Lever
• That means your brake controller is not getting a signal on the red wire when the brakes are applied. This is the circuit that when activates tells the controller you are braking and to start slowing down the trailer. First thing I'd check is to make sure the third brake light of your 2005 GMC Yukon is active. Normally a blown third brake light fuse in GM vehicles around yours' age is the culprit for this problem. Next make sure the red wire is connected solidly to the correct circuit that...
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• Trailer Brakes Lock Up When Brake Controller is Engaged
• The issue you are experiencing with the brakes on your trailer is more than likely either a short in the brake output wire (usually blue) that runs from the trailer side trailer connector to each braking assembly, a bad ground on the braking assembly or a faulty brake magnet. The first of which I would do is trace the brake output wire from the trailer connector back to each braking assembly while checking for breaks or frays. I would then move onto the ground while checking each of the...
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• Troubleshooting Trailer Lights Not Working and No Power at the 7-Way on a 2000 GMC Yukon
• There could be a couple of causes leading to the lighting malfunction you are experiencing. The first things I would check are the ground connections on the vehicle side 7-Way, trailer side connector, and the grounds for the lights on the trailer. On most trailers, the lights ground through the mounting studs. Make sure that at each ground location, there is no dirt or corrosion. A bad ground connection is one of the leading causes of lighting malfunctions. You can also probe the wires...
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• Troubleshooting Wiring When Trailer Right Blinker And Running Light Do Not Work
• The problem you are describing is normally associated with a ground problem, whether it is a weak ground or not connected securely to a clean, bare metal surface, or even a break in the ground wire, but since you said you tested the harness on your Yukon it sounds like the problem is with the vehicle. You will want to make sure there is no sign of corrosion or dirt on the vehicle connector. Then you can use a circuit tester like part # PTW2993 and have someone run through all the functions...
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• Trailer Lights Blinking Really Fast When Connected to 7-Way on 1997 GMC Yukon
• When someone is experiencing out of control or hyper flashing turn signals, a few things come to mind. First would be, does the trailer have LED lights? If so, installing load resistors, # DI34ZR, on the turn signal circuits should solve the problem. LED lights only draw a fraction of the power that an incandescent light would so vehicles with a bulb-out sensor are tricked by this and think that a bulb has burned out which in turn causes the rapid blinking. I have included a diagram showing...
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• Troubleshooting Brake Controller That Shows ER Code on Display
• The Er display code means that there is an internal problem with the brake controller itself. That's typically not a great sign and usually means the controller needs to be replaced, but sometimes you can get lucky and just unplugging the controller and plugging it back it fixes the issue.
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• No Power to Tail & Brake Lights on 7-Way of 2011 GMC Yukon
• Ok, let's see if we can figure out what's going on here with your tail and brake lights not working on your trailer; you took the right steps so far by checking the fuses, your trailer wires, as well as ensuring you have a good ground. It is possibly the relays, yes, so but I think another possibility is with the 7-way connector on your 2011 GMC Yukon based on you saying "I do not have power for the tail/marker or brake lights on the tow vehicle 7 way plug." The first thing to do is check...
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• 2005 GMC Yukon Sags When Towing, Even When Using Weight Distribution
• Let's begin with the basics. In order for a weight distribution system to work correctly, the existing vehicle suspension needs to be in good condition. Then, you'll need to ensure you have the correct system for the tongue weight of your trailer. To choose a weight distribution system, you'll need to first determine the fully loaded and ready to tow tongue weight of your trailer. To that figure, add the weight of any gear stowed in the cargo area of the SUV or truck bed behind the rear...
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• Troubleshooting Malfunctioning Right Brake Lamp on Trailer Towed by 2005 GMC Yukon
• Since the right turn and brake lamp signal are carried on the same circuit, the problem is most likely in the vehicle wiring. Begin by using a circuit tester like # PTW2993 on the right turn/brake lamp pin in the 3:00 position on the 7-way. You should get signal on that pin when the brake pedal is pressed. If you don't, access the wiring harness behind the 7-way, and look for the green wire in the wire loom. Use the tester while the brake pedal's being pressed. If you see signal on the...
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• Brake Controller Recommendation/Troubleshooting on 2002 GMC Yukon
• The Draw-Tite # 5504 Activator and the # 3025-P vehicle specific brake controller wiring adapter would work just fine on your 2002 Yukon. You'd simply unplug the existing controller from the junction box located on the firewall behind the emergency brake pedal. You might want to do some troubleshooting before replacing the controller, to ensure the problem isn't in the vehicle or trailer wiring, and not the brake controller itself. Use a # PTW2993 circuit tester on the black wire exiting...
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• Why Is My Brake Controller Running Hot And Locking Up Overnight
• It sounds like your brake pin has constant 12V power and it should not. You will need a circuit tester, such as the Cordless Circuit Tester, part # PTW2979, so you can check the voltage on the brake output pin on your 7-way connector. This pin should be at the 5 o' Clock position on your 7-way connector. My guess is when you test that connector you will find that it reads 12V, but it should not read anything if the brake controller is not activated. I have attached a diagram that shows...
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