It sounds like a blown tow package fuse in your fuse block on your 2003 GMC Yukon XL. You will need to check the accessory fuse block under the hood of your vehicle. When you remove the cover of the fuse block there will be a legend on the underside of the cover that will show the location of the fuse.
If the fuse is blown you will then want to check the taillight wiring on your boat trailer for any pinched or frayed wires that could be shorting out on the trailer frame and causing the... view full answer...
The fact that the trailer works fine on your Tacoma is good news because that allows you to rule out the possibility that the issue is on the trailer and allows you to focus on the connections with your Yukon. Just disconnect the plug from your trailer and use a circuit tester to see if the signals are getting to your plug. You will also want to check location 3 in the fuse panel under the hood, which is the left trailer stop and turn lamp fuse.
If they are it might also be corrosion in... view full answer...
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. view full answer...
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... view full answer...
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... view full answer...
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... view full answer...
According to our contact at Draw-Tite the best way to use a weight distribution system with an automatic leveling system is to first start your Yukon and put a slight load on the rear of the truck to let the air suspension begin to level the vehicle.
Then you will want to measure the distance from the ground to the top of the front wheel wells.
Next you will want to hitch up your trailer and set up your weight distribution system per the instructions.
Finally, you will want measure... view full answer...
Since the trailer brakes are working with another vehicle, the trailer wiring is eliminated as a source for the issue.
The first thing I would check is the adapter you are using. Trace the power wires for the trailer brakes back to the trailer connector to determine which terminal is the brake feed circuit. Once this is determined check the adapter to see if it is wired correctly to transfer the brake power from your vehicle to the trailer brakes. There are two different acceptable wiring... view full answer...
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. view full answer...
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. view full answer...
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... view full answer...
The first thing I would do is to use a circuit tester, like # PTW2993, to test the vehicle side trailer connector with no trailer connected. If your 2001 GMC Yukon has a factory installed 7-Way, test the pins in the 3 o'clock and 9 o'clock position. Have someone step on the brakes while testing the pins. The test light should show a signal. If it does not, then something is wrong with the wiring on the vehicle, and you will need to trace the wires back to look for any broken or loose connections.
If... view full answer...
Typically when the Superchips Flashpaq F5 # SU2845 you have is reading vehicle did not respond like yours is, it means that there is aftermarket electronics interfering.
Check that the purple wire in the back of your OBDII port in your 2005 GMC Yukon doesn't have anything spliced in like an aftermarket stereo etc, however lights would only cause an issue if spliced into this wire.
You'll also need to make sure your battery is completely charged. view full answer...
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... view full answer...
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. view full answer...
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... view full answer...
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... view full answer...
I am not sure if you are referring to your truck's own lights or the lights on a connected trailer but since you referenced 4-pole wiring harness products such as # 118384 I'll assume you're talking about the lights on the trailer misbehaving.
When a 4-pole harness exhibits weird behavior like what you're seeing often the cause is a simple one: a weak ground connection. Check your main trailer harnesses grounds, both the ground wire on the vehicle harness and the one on the trailer. You... view full answer...
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... view full answer...
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... view full answer...
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