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Expert Answers about GMC Yukon XL


  • What Size is the Hitch Pin Hole of the Convert-a-Ball part # AMSC6HD
  • The hitch pin hole diameter of the Convert-a-Ball part # AMSC6HD that you referenced is 5/8 inch which is the standard size for ball mounts like this that fit 2 inch hitches.
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  • What is Correct Gauge of Wire for Wiring Trailer Brakes
  • Yes the issue is related to the wire gauge you have. You need to go with 10 gauge wire like part # 10-1-1 (sold by foot) to deliver the amperage and voltage needed for your brakes to activate. 14 or 16 gauge wire is no where near heavy enough for this task.
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  • Replacement 4-Pole Wiring Harness for 2005 GMC Yukon XL
  • You probably could rig your damaged wiring harness in the way you describe, using diodes to keep the circuits separated, but I suggest just replacing the harness with a 4-pole set-up like # C59496. This is a hardwired harness with a substantial current capacity of 2.1 amps per stop/turn circuit and 7.5 amps for the tail lights. The risk in doing what you describe is that the wiring/circuits you would be accessing for signals may not be able to provide the required current for the trailer...
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  • Crossbars And Cargo Box For 2017 GMC Yukon
  • The Thule Motion XT # TH629706 will fit on your roof. If you have side rails but no crossbars you'll want to get the Jetstream crossbars # Y00426 Skyline Towers # Y53TR and Landing Pad Kit # Y00243. The sooner you order the sooner they will arrive!
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  • Fit of Thule # TH04997 Mounts for Thule Mountaineer Cargo Box on 2003 GMC Yukon w/ OEM Crossbars
  • The Thule Replacement QM3 Quick Mount Hardware kit you referred to is compatible with your Thule Mountaineer cargo box. I've confirmed this with Thule. The mounts will fit crossbars up to 3-1/2 inches wide, as long as the crossbars on your Yukon aren't wider than that, the mounts will work well for you. You can see how the pieces of the mount kit fit together in the diagram I provided for you.
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  • Activating Brake Controller Wiring on 2000 GMC Yukon XL
  • On your 2000 GMC Yukon XL 2500 there are a few connections you need to make under the hood to activate the brake controller wiring of the vehicle. If you check out the attached link on this page you'll see all the steps needed to activate all of it.
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  • Compatible Air Mattress For A 2016 GMC Yukon XL
  • Yes, the AirBedz XUV Air Mattress w/ Built-In Battery-Powered Pump # 341031 is a confirmed fit for your 2016 GMC Yukon XL with 2nd row bucket seats. You'll just fold down your seats and lay the mattress down and fill it up using the battery powered pump.
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  • What Parts do I Need for a Complete Roof Rack System for a 2016 GMC Yukon XL?
  • I have a great solution for you. Unfortunately, the Yakima CoreBar Crossbar System for Retrax XR Series Tonneau Covers are only installable on truck beds. It will not fit on your flush factory rails on your 2016 GMC Yukon XL Denali. With that being said, for a great roof rack with a 220-pound weight capacity on your vehicle, I recommend the following roof rack setup: - Rhino-Rack Vortex Aero Crossbars - Aluminum - Black - 59" Long - Qty 2 # RRVA150B-2 - RCH Legs for Rhino-Rack Crossbars...
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  • Rear Suspension Enhancement that Fits 2011 GMC Yukon XL
  • That Timbren only fits the 2500 model Yukon XLs. For a similar suspension enhancement kit that does fit your 1500 2011 GMC Yukon XL you'd want the part # SSR-204-40. This will give you the support you are wanting but will offer a smoother ride quality.
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  • Can the Motor of the Electric Jack w/ Footplate # EJ-3520-WBX be Turned Around
  • Although the head of the Electric Jack w/ Footplate # EJ-3520-WBX cannot physically be turned separately from the rest of the jack, the mounting holes are symmetrical so you can rotate the trailer jack 120 degrees in either direction for your towing setup.
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  • Brake Controller Does Not Work with Brake Pedal on a 2007 GMC Yukon XL
  • The likely issue is that a fuse is missing or there are additional connections that need to be made under the hood of your 2007 GMC Yukon XL. This is common for GM trucks and SUVs and it is easy to get everything working. I have included a link to a help article that explains the connections under the hood. The owners manual will show the the specific location of the brake controller fuse. The help article also covers the tow package wiring colors and functions on the vehicle. Make sure...
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  • Replacement Timbren Rear Suspension Enhancement System for 2004 GMC Yukon XL Denali
  • The Timbren Rear Suspension Enhancement System # TGMRG25C do not come with replacement springs available. Unfortunately you will need to get both springs to replace your missing spring. To ensure you don't lose another spring, I recommend using the Loctite Threadlocker 262 - High Strength # LT37420. This will keep the threaded bolt from vibrating loose over time.
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  • Best Low Clearance Tire Chain for Tire Size 275/60R20
  • We do have the K79 size of the Konig K-Summit tire chains part # KON24FR that you are looking for that fits your tire size of 275/60R20 of your 2021 GMC Yukon XL. What's great about these chains is that unlike other options it does not drape over the inside of the tire so no inner wheel well clearance is required. As far as low clearance tire chains go these are by far the best.
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  • Front Mount Trailer Hitch for 2001 Ford F-150 for SnowBear Snowplow
  • I have good news all around because there are front-mounted trailer hitches that fit both your 2001 GMC Yukon 1500 and 2001 Ford F-150, and your SnowBear Personal Snowplow for 2" Hitches # SB324-081 will fit on both trucks. - 2001 Ford F-150 Front Mount Hitch: Draw-Tite Front Mount Trailer Hitch Receiver # 65025 Both of these hitches will work great and allow you to mount your snowplow.
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  • Weight Distribution System Recommendation for a 2006 GMC Yukon Pulling a 6000 lb Trailer
  • I would recommend using a weight distribution system like a Strait-Line Weight Distribution System w Sway Control - Round Bar - 10,000 lbs GTW, 800 lbs TW, part # RP66087, for your 2006 GMC Yukon Denali. This system should help your towing set up ride more level as well as improve the handling and braking of your setup. You could try using a Timbren Rear Suspension Enhancement System, part # TGMRYS4, but I would recommend trying a weight distribution system first, because it will get more...
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  • Where is the Brake Controller Port on a 2018 GMC Yukon XL
  • Did your 2018 GMC Yukon XL come with a factory trailer connector? If not then the port is not present and the brake controller would need to be hardwired into the vehicle's wiring harness. If it did then the port should be located up under the dash near the emergency brake lever or OBDII port. The harness is usually taped to other wires and can be hidden pretty well so it will take some time. Unfortunately, we have not yet installed a brake controller on a 2018 GMC Yukon XL so I do not...
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  • What is Needed to Transfer Prodigy P2 # 90885 Between 2008 Silverado and 2011 GMC Yukon XL
  • To easily transfer a Prodigy P2 Brake Controller between two vehicles you will need a second mount, either metal bracket part # P7685 or plastic pocket # 7686. Both options include the required mounting hardware. I have linked representative installation videos for this brake controller in both a Silverado and a Yukon XL. You will also need to equip each vehicle with a Pigtail Wiring Harness # 7894 to allow the controller to simply plug in for use. A Prodigy P2 comes equipped with one...
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  • Bike Rack Recommendation for the Back of a 2014 Forest River Travel Trailer
  • The weight capacity of the bumper should be included with the literature for the trailer. If not, contact Forest River because that might be something that they know even if not listed in the manual. The Swagman rack # S64663 weighs around 35 pounds or so and when loaded to its max capacity you are looking at a total of 115 pounds. If the bumper is not strong enough or there is not enough space for the rack then I would go with a ladder mounted rack. We have # LA-102 which has a capacity...
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  • Custom Fit Replacement Towing Mirrors for a 2014 GMC Yukon XL Denali
  • The K Source Custom Towing Mirrors, # KSVS55010, for your 2014 GMC Yukon Denali XL have a black finish that is ready to be painted to match the vehicle. A chrome set is not available. They do not power fold in but they do have power electric mirror face operation, heat, and turn signal functions as well as the Lane Change Alert-Cam. Please note that you cannot upgrade to power remote operation, heated mirror face, and turn signal or Lane Change Alert if your factory mirror is not already...
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  • Does the 20 Amp Circuit Breaker for Ultra-Fab Powered Trailer Jacks Reset Itself
  • Once an overload condition has ceased then the circuit breaker should reset itself. It is mounted on the outside of jack # UF38-944017 but should not need any persuasion to reset. If the jack is not powering on it could be that an overload or short still exists or something else in the electrical system from the power source to the jack is not working properly. You will also need to check the in line fuse. If it is blown the jack will not operate. If all the wiring is done correctly and...
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