Because your tires are tilted in at the top and are not equal side to side, it sounds like you are overloading the axle or the torsion coils aren't working as they should. Trailer axles are intended to be slightly bent upward when unloaded so that under the proper weight capacity they level out and don't have a camber. Having that camber will most definitely wear your tires unevenly as the weight and friction will be on the inside edge of your tires.
If you are interested in correcting... view full answer...
That is a pretty weird issue!
I would start by checking that the connector for the Curt T-Connector Wiring Harness # C56375 you installed in your 2018 GMC Terrain is fully seated into the factory connector.
If that is the case then go ahead and remove the connector and check both the Curt and Factory connectors for any debris or corrosion that may have worked its way in there causing your issue.
Next go ahead and check that the two relays in the fuse box of the rear cargo area are completely... view full answer...
I am not totally sure what you are trying to install that is having issues with the bolts fitting but if it's a weld nut on vehicle that you can't get hitch hardware to thread into it's rust/dirt in the threads that need to be cleaned out. This is VERY common unfortunately. The quickest and most efficient way to address it is to use a thread tap. view full answer...
It sounds like you probably have a short on your left stop/turn circuit on your trailer end. It is very unlikely that the wiring on your 2018 GMC Terrain is messed up as it is a brand new vehicle so I would start by checking the connector on your trailer for corrosion or debris. If you have any fuses or relays on your Terrain dedicated to the trailer lights then they would be worth looking at as well.
If that looks good then check the wiring and grounds on that circuit. Look for places... view full answer...
Thank you for your purchase from etrailer of the diode wiring kit; if one side of the lights is not working it is certainly possible the diode is bad. What you can do is replace it with the Roadmaster Hy-Power Diode # RM-790. view full answer...
The black cable on the Roadmaster FuseMaster Fuse Bypass Kit # RM-76517 should be running to the negative side of the fuse terminal. If you're getting power on the black wire then you have it attached to the positive side of the fuse terminal which would be incorrect. Flip the black and red cables the on the fuse terminals and you should be good.
I've attached an installation video to help with the installation process for the Roadmaster FuseMaster Fuse Bypass Switch for Towed Vehicles... view full answer...
I understand the circumstances and the need you describe but unfortunately we do not have an add-on protective cover for a 6-pole. You might try a healthy application of dielectric grease # 11755 to prevent shorts from moisture entering the socket. This would require periodic re-application but it would work to keep water out of the socket. view full answer...
The Tow Ready 4-Pole Wiring Harness Kit # 118494 is a confirmed fit for your 2010 GMC Terrain that does not have factory tow wiring.
Since you have already changed the harness' fuse and cleaned the contacts on the 4-pole plug I suggest you test the 12V power wire that runs from the battery to the yellow fuse holder. Test the wire to see if power is making it to the fuse holder. If not, then this tell us that the issue is upstream and you should make sure the connection at the battery +... view full answer...
Sometimes exhaust can rattle up against a trailer hitch since they typically install pretty close to each other.
Exhaust pipes and mufflers hang on rubber isolators. The hangers can usually be manipulated to gain more clearance between the exhaust and the hitch. I have included a link to the right that covers the different fixes for this problem. view full answer...
It sounds like you're installing the Curt # C56375 on your 2018 GMC Terrain. This is designed for the factory tow package. Since your relays don't snap into the K1 and K3 positions it sounds like the terminals are missing from the relay cavity. This means you need the T-One Vehicle Wiring Harness # 118764 instead. This wiring harness is designed for the Terrain without the factory tow package, and no relays are required. view full answer...
As odd as it may sound the problem is you have a weak ground on your trailer wiring. Try improving the connection from the ground circuit of your trailer wiring connector to the frame of the trailer and also make sure the grounds of the light assemblies are making a solid connection. You may need to run a jumper wire from the assemblies back to the main ground harness. view full answer...
Demco stated that the pulsing that you've been experiencing with the Demco Stay-IN-Play DUO Supplemental Braking System w/ Wireless Coachlink Monitor - Proportional # DM86VR when your turn signal is activated is normal and usually caused by the sensitivity being cranked up too high and near the max setting.
You can adjust the sensitivity of the inertia-sensing mercury switch with a knob on the front of the G-Force controller. Adjusting the sensitivity lets you decide how intense the change... view full answer...
When researching this issue, in your owners manual, to tow the vehicle from the front with all four wheels on the ground the following steps must be followed:
1. Position the vehicle that will be towed and secure it to the towing vehicle.
2. Turn the ignition key to ON/RUN.
3. Shift the transmission to N (Neutral).
4. Turn the ignition key to ACC/ ACCESSORY.
5. Turn all accessories off.
Just incase your steering wheel is locked, because you mentioned that this only happens on turns, the... view full answer...
Make sure you are following all of the flat towing guidelines in your owners manual. If you are seeing your Terrain wheels not tracking and instead dragging there is an issue with the vehicle. In the online manual on page 10-70 and 10-71 this is outlined.
If the vehicle is towed without performing each of the steps listed under “Dinghy Towing,” the automatic transmission could be damaged. Be sure to follow all steps of the dinghy towing procedure prior to and after towing the vehicle.
If... view full answer...
Ralph,
It sounds like the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C94FR is what you should be using for your 2019 GMC Terrain as it's designed for vehicles with a factory tow package. The # 119250KIT, you mentioned, is designed for vehicles that do not have a factory tow package.
LED lights draw only a fraction of the amperage when compared to incandescent lights, so what is very likely happening here is that you're dealing with a case of an insufficient... view full answer...
It sounds like there is some corrosion that has built up on the trailer connector causing that 5 o'clock brake output pin to have constant 12V power. I recommend cleaning the connections on both the vehicle and trailer side with some sand paper or steel wool and then using some dielectric grease like # 11755 to keep debris and moisture out of the connections.
You can use a circuit tester like # PTW2993 to test the pins for function and also test the breakaway system for function.
If... view full answer...
The first thing to check is that your harness connectors are fully seated together. Also, it can happen that one of the metal contacts in the connectors (either the vehicle or harness side) could be bent and this could prevent the brake light signal from reaching your trailer.
Also check the main ground wire for the Terrain's wiring harness; this white ground wire must make metal-to-metal contact with the vehicle. You can try cleaning/sanding the grounding point, moving the ground wire... view full answer...
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