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Expert Answers about GMC Yukon


  • Locating Stop Light Circuit Wire for Brake Controller Install on a 1999 GMC Yukon
  • The easiest way to do this is to access the main vehicle wiring harness located under the dash near the steering column. Using a circuit tester like part # PTW2993, you would probe the wires in this harness until you find the one that only shows current when the brake pedal is pressed. Once you find the right wire, you can tap the red wire from the brake controller into it.
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  • Where Is The Trailer Brake Wiring Harness Located On A 2014 GMC Yukon
  • On your 2014 GMC Yukon the trailer brake wiring harness is located under the left side of the instrument panel to the left of the steering column. You will be able to idetifiy these wires by the white label, and there will be one Red/Black wire, one White wire, one Light Blue/White wire, one Dark Blue wire, and possibly one orange wire. If you are still needing a trailer brake controller I recommend the Tekonsha Prodigy P3 # 90195 as it offers great features like continuous diagnostic...
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  • Should Vehicle Sit Level When Weight Distribution System is Used and Set Up
  • You'll want to use the amount of links that allows the tow vehicle to sit as close to level as possible. So in your case you'd want to use 6 links since you said that gives you the more level height. Since your weight distribution system is rated for 500 to 800 lbs and your tongue weight is 600 you're good in that regard as well.
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  • Compatible Brake Controller and Wiring Harness on 2005 GMC Yukon
  • The Tekonsha Prodigy P2 Brake Controller # 90885 is a confirmed fit for your 2005 GMC Yukon. It's one of the most popular brake controllers because of how easy it is to setup and to use. Using the # 3015-P wiring harness like you mentioned is definitely the way to go. It's a custom adapter that plugs directly into the junction box under the dashboard. I've attached the installation instructions for you to take a look at.
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  • LED Indicator Turns Green then Off with Brake Pedal and No Trailer Attached to 2003 GMC Yukon
  • If the trailer is not connected, when you step on the brake pedal, the indicator light will show green (indicating that you stepped on the brakes) but no power will be sent back so the light will not turn orange or red. The controller sends a signal back to the 7-Way to see if a trailer is connected or not so that is how it knows there is no trailer connected. The 12 volt circuit on the vehicle side or the battery on the trailer side do not affect the brake controller.
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  • How To Install the Draw-Tite Activator Brake Controller on a 2011 GMC Yukon
  • Certainly, in order to install the Draw-Tite Activator Trailer Brake Controller part # 5504 on your 2011 GMC Yukon you will first need to obtain the Brake Control Plug-In Harness part # 20127. Once you have then you can then use part # DW05744-5 to make the following splices with the blunt cut wires under your driver side dash, by the brake pedal (see photo). GMC Yukon Wire Color - Brake Control Wire Color - Function Red/Black - Black - Battery Power White - White - Ground Light Blue/White...
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  • Does Front Air Dam Need to Be Trimmed to Install Front Mount Trailer Hitch on a 1998 GMC Yukon 4x4
  • In order to install the Draw-Tite front mount trailer hitch, # 65005, the air deflector/fascia must be trimmed or removed on a 1998 GMC Yukon 4x4. I have included a link to the installation details for you. You will also need to determine if the front axle can handle the weight of a carrier and bikes. Keep in mind that your view will be limited with something mounted to the front and air flow will be reduced.
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  • Removing Wiring Harness from Trailer Connector on a 2002 GMC Yukon to Replace Bracket
  • There is a locking tab that holds the wiring harness to the back of the trailer connector on your 2002 GMC Yukon. You will need a small flat head screwdriver to remove the locking tab. Then you can pull the connector off. I have included a link to a video to the right that should help.
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  • Front Hitch With More Ground Clearance For 2013 GMC Yukon
  • For your 2013 GMC Yukon, the Draw-Tite Front Mount Trailer Hitch Receiver # 65052 will give you about a 1/2 inch more ground clearance than the Curt Front Mount Trailer Hitch Receiver # C31012. Having said that, I do recommend the Curt hitch over the Draw-Tite. While it does require drilling into the frame, that does make the installation simpler as it you'll simply bolt the hitch up into those holes. The Draw-Tite partially attaches to the frame's splash shield, and it also requires taping...
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  • Installation of Brake Controller on a 1999 GMC Yukon
  • The 1999 GMC Yukon will not have a brake controller plug-in port under the dash. To install a brake controller on your vehicle you will need to hardwire the brake controller with the Brake Controller 7 and 4 Way Installation Kit, part # ETBC7. To install the # ETBC7 kit you will need to have a 4-Way connector at the rear of your vehicle. If you need to install a 4-Way connector you can use the Tow Ready T-One Wiring Harness, part # C55319. The Tow Ready harness will plug into a connection...
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  • What Modifications are Required to Install a Front Mount Trailer Hitch On My 2004 GMC Yukon 1500
  • To install the Curt Front Mount Hitch on a 2004 GMC Yukon 1500, you may need to trim the front air dam or fascia for the hitch to install properly. How much trimming and if trimming is even needed varies from model to model and you will only know once you have the hitch. I have included a link to the installation details for reference.
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  • Can the Gen-Y Rebel Ball Mount w/ Stacked Receiver Be Used for Towing and Bike Rack
  • Yes, the Gen-Y Rebel Ball Mount w/ Stacked Receivers like part # GY72FR can be used for towing and hitch mounted accessories at the same time. The hitch accessory will need to be installed in the upper receiver and then you can use either of the bottom two receivers for the ball mount.
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  • How to Install the Putco Designer FX Grille Insert on a 2007 GMC Yukon
  • The Putco Designer FX Grille Insert, # P64359, that you referenced does not require you to remove the existing grille on your 2007 GMC Yukon, but simply installs on top of your existing grille. The Designer FX Grille has studs on the back that pass through your existing grille and use small plates and wing nuts to tighten to your grille. The center of this grille insert is punched out to allow the GMC logo from your factory grille to show through. You will not need to remove any part...
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  • Procedure for Installing Curt Class V Hitch on 2004 GMC Yukon with OEM Hitch
  • I spoke with my contact in the Tech Services department at Curt Manufacturing. I was told that installing the # C15324 on your 2004 Yukon would be a simple matter of unbolting the existing hardware holding the factory hitch into place, removing the hitch and installing the # C15324 according to the instructions. Keep in mind that although this hitch has a 16,000 lb towing/ 2,400 lb tongue weight capacity, your actual capacity might be limited by the actual towing capacity of your Yukon,...
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  • Can the Tuson DirecLink Controller Keypad Be Unplugged When Not In Use
  • Yes. The Tuson DirecLink Base Model Trailer Brake Controller - 1 to 4 Axles - Proportional # 335DL-100 controller can be disconnected when not in use, and stored in your glovebox or wherever is convenient!
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  • Diagram for a Vehicle Side 7-Way Trailer Connector on a 1999 GMC Yukon Denali
  • We do have a diagram of the typical 7-Way pin-out that will be on your 1999 GMC Yukon Denali. I have included a picture for you and a link to a wiring FAQ that will be helpful. The picture and the FAQ mention function and color. however, you cannot go by color because of the vast differences among manufacturers. So, you will need to go by function by testing the wires with a circuit tester like # PTW2993 if needed to get the correct functions before attaching them to the back of the 7-Way.
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  • Circuit Breaker Size for Brake Controller Install Towing 2 and 3 Axle Trailers
  • If you planned to tow both a 2 axle and a 3 axle trailer you'd want to just use a 30 amp breaker like the part # PK54230. It wouldn't be necessary to go down to a lower rated breaker when towing the 2 axle trailer.
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  • What Might Cause Trailer Battery to Die When Connected to Tow Vehicle
  • What all is connected to your trailer battery? You'll need to go through the list of all connections made to your trailer's battery so that you can determine what all could be drawing amperage and then make sure all of those accessories are turned off when you are towing. The 12 volt accessory pin of your 7-way can put a maintenance charge on your battery as well if needed. This is the pin in the 1:00 position on the vehicle 7-way. You'd want to run 10 gauge wire like part # 10-1-1 (sold...
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  • Location of Electronic Trailer Brake Controller Wiring on a 2007 GMC Yukon Denali
  • The wiring to install a brake controller like the Voyager, # 39510, can be found under the dash, below the steering column near the brake pedal. If you look up under that point you should see a bundle of wires held together with a white tag. The tag lists the functions of the wires. Wiring color and function can change from year to year in the same vehicle but it could be that the red wire on the Yukon attaches to the black wire on the brake controller. The dark blue wire will go to the...
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  • Tips For Removing Stuck Master Cylinder Cap On A Dexter T4750820 Actuator
  • Sometimes dust and dirt can get down in the threads of the master cylinder cap and they can get stuck on there real good. Unfortunately there is not really a trick to getting it off, other than using force. A little WD40 may help but I would use that as sparingly as possible. If you have no choice but to break the cap, it can be replaced with part # T4830601.
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