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Expert Answers about GMC Sierra 3500


  • Solution For Bed Bolt That Doesn't Want To Tighten After Installing TorkLift Camper Tie-Downs
  • Glad to hear most of the installation of your TorkLift Custom Frame-Mounted Camper Tie-Downs # TLC2225 went well, however to fix the issue you're having I recommend re-tapping the threads for your bed bolt as they may be worn or stripped out. To further secure the bolt into it's spot you can also use some thread locker like: -Loctite Threadlocker 262 - High Strength - Up to 3/4" Nuts/Bolts # LT37420. I've also included an installation video for you to check out as well.
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  • Can You Raise L-Brackets on Equal-i-zer Weight Distribution More Than Level with Frame
  • I spoke to Equal-i-zer about your setup and they informed me that if you need more adjustment for being under distributed, you can raise the brackets on the frame beyond level if you have already added the maximum number of washers to the angle bolt. I would also add that making sure you have the correct system is another thing to check so if you can get your exact loaded tongue weight, we can then confirm if you have the correct system. If you do have the correct system and still cannot...
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  • Troubleshooting Integrated Trailer Brake Controller 2020 GMC Sierra 3500 w/ Electric Over Hydraulic
  • It sounds like you may have a programming issue with the factory controller on your 2020 GMC Sierra 3500HD. You will want to take your Sierra to your GMC dealer to have them verify the programming for the controller and add any updates which may be required. The Hydrastar Electric Over Hydraulic Actuator Adapter Module # HBA-CAM is only designed to adapt the braking profile some integrated brake controllers have which only work on electric trailer brakes. While it does not appear your...
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  • Troubleshooting Clunking Noise On Demco 21K Autoslide 5TH Wheel Hitch after Installing GM Adapters
  • It sounds like there is an issue with the fitment of the Side Plates # DM49GV in the bed mounts on your 2020 GMC Sierra 2500. The cams may have loosened on the arm which would cause play between the bed mounts and the hitch adapters. It would not make sense the plates are clunking between the Hitch # DM8550035 since they are bolted together and should not have play in them. Please inspect the cams for play and let me know what you find.
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  • Troubleshooting Snowmobile Trailer Brakes That Lock Up When Trailer is Connected to Tow Vehicle
  • If the brakes on your snowmobile trailer activate and stay locked up when you connect to your 2018 GMC Sierra 3500 then that should actually be a pretty easy fix. The pin in the 1 o'clock position on your Sierra will carry your 12V power which should be constant power (at least with the ignition on). What I believe is going on is that the brakes on your snowmobile trailer are connected to the corresponding pin on your trailer side connector. Try verifying this by taking a 12V battery...
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  • Can I Use Penetrating Oil on a B&W Turnoverball with a Stuck Latch Handle
  • In most cases B&W doesn't recommend using any type of lubricant on the spring and latch on your Turnoverball # BWGNRK1016 as it will only attract dirt and moisture on that spring; however in this case you can use some penetrating oil on the ball and the latch to try to loosen everything up. My contact over at B&W mentioned that typically full engagement, if done periodically, would be enough to knock off most of the rust that would be forming. As I mentioned, you can use some penetrating...
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  • EOH Brakes on New Trailer not Working With 2016 GMC 3500 With OEM Brake Controller
  • Since you have already tested the trailer brakes with a few different trucks by different manufacturers (2 of which have been used with an Electric Over Hydraulic (EOH) system), the problem should be with your trailer. The reason that they most likely recommended checking your trucks is that we have seen issues with OEM brake controllers from manufacturers working with EOH systems. What you will first want to check is the connectors on both your 2016 GMC Sierra 3500 and your trailer. It...
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  • What To Do With Brake Cable Interfering w/ Install Of Firestone Air Bag Helper Springs 2017 GMC 3500
  • We had a similar issue when installing the Air Lift # AL88338 on a 2016 GMC Sierra in our shop. We removed the bracket which holds the brake cable in place and re-secured it later using a different bracket. I have linked that install video below where you can see the new bracket being installed at the 12:00 minute mark. You can do the same when installing the Firestone Ride-Rite Red Label Extreme Duty Air Helper Springs # F2709 on your 2017 GMC Sierra 3500. The bracket used in the video...
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  • Troubleshooting 2016 GMC Sierra 3500 that Won't Activate Disk Brakes of Horse Trailer
  • Sounds like your horse trailer has electric over hydraulic brakes and you have a brake controller in your 2016 GMC Sierra 3500 that is either not compatible with that style of brakes or is not in the correct hydraulic setting. Check the controller for any setting changes that mention hydraulic brakes as that will fix the problem. Or if your controller doesn't have that option you can install a controller like the P3 part # 90195 which does have an EOH setting and would work well for you....
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  • Troubleshooting Voltage Drop on Brake Output Circuit When Brakes are Wired Up on Trailer
  • It sounds like the ground of the assemblies isn't attached properly or to the correct location. Most of the time you can just run the ground wire of the assemblies to the trailer frame but if it's an aluminum frame trailer you may need to run a jumper wire from it back to the main ground of the trailer wiring harness.
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  • Unable to Get B&W Companion Base To Fit a 2022 GMC Sierra 3500 With Factory Prep/Puck System
  • The pucks on your 2022 GMC Sierra 3500 will not be adjustable as they are a fixed part under the bed. You should be able to loosen up the cotter pins and castle nuts on the Replacement Base for B&W Companion # BWRVB3710 to get the hitch to drop into the mounting points on your bed. while they normally will drop into most the pucks without adjustment they do offer some adjustment to ensure a proper fit. Please let me know if that does not work for your base and if you can inspect the...
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  • Trouble with Locking Handle Engaging on the Curt A20 5th Wheel Trailer Hitch
  • I spoke to my contact at Curt about your Curt A20 5th Wheel Trailer Hitch part # C16140 and they informed me that the locking handle issue is likely a result of improper lubrication. For starters, I would take some brake parts cleaner and spay down the jaws and the locking handle to ride any debris. Once you have let the jaws and handle mechanism dry then you can take some LubriMatic White Lithium Grease part # L11354 and work it onto these components while moving them back and forth to...
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  • Troubleshooting Error Message with Titan BrakeRite I Plug and Play Electric Hydraulic Actuator
  • The female end of the 7-Way harness included with the Titan BrakeRite I Plug and Play # T4813102 that plugs into the trailer features standard 7-Way wiring. I have attached a diagram of how the connector is wired that you can check out. Since you received an error message when hooking up the unit and trailer to two different trucks, there might be an issue with the trailer side 7-Way. I recommend inspecting the 7-Way on your trailer for any debris or corrosion inside the pins that needs...
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  • Why Are Lippert Ground Control 3.0 Front Jacks At Different Heights
  • Thanks for reaching out about your Lippert Ground Control 3.0 # LC358590! What exactly is the level situation you're using this under? If the right front jack has to be extended further out for your 5th wheel to be level but then you're manually retracting both front jacks at the same time then it just stands to reason that the right jack would still need to be retracted after the left jack is seated. If you can give me a little more insight into the level situation and if you're getting...
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  • Furrion Vision S Not Pairing With 2021 GMC Sierra 3500
  • So while we don't have a good solution at this point, we can however offer a fix by using load resistors which allow the camera to function properly. You could use Load Resistor Kit for LED Turn Signals - 50 Watts - 6 Ohm - Qty 2 # DI34ZR to allow your camera to function properly. Furrion and our team have been in communication and Furrion has ensured us they are actively working on a solution to resolve this issue.
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  • Solution for Pin Box That is Making Contact With Bed Rails on 2015 GMC Sierra 3500
  • There is a solution for you, though it will not be possible to raise your Curt Q20 # C16130 any more or extend your king pin. Instead, the best solution for you is to raise your trailer with an over/under conversion kit. What this does is moves your trailer's leaf springs to the top of your axle and lifts your trailer approximately the same amount as your axle's diameter plus the height of the leaf spring pack (please keep in mind this conversion kit is for use with double-eye springs...
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  • Reese Goose Box Chucking Excessively
  • Thank you for your purchase from etrailer of the Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter - 20,000 lbs # RP85FR. In regards to the excessive chucking, the issue is very likely to be the air bag inside the coupler was not inflated properly for your ride. The Goose Box # RP85FR can have different amounts of air added to it to help with different trailer set ups. I recommend first just taking a look to ensure the air bag was not somehow punctured and inflates properly,...
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  • Troubleshooting Pin Box To Tailgate Clearance Issues When Using A Sliding 5th Wheel Hitch
  • Moving your B&W Companion Sliding 5th Wheel Hitch to the rear most position will unfortunately place it closer to your tailgate. Since you have a shorter bed the slider is designed to add clearance from the cab but that will unfortunately cut out clearance from your tailgate. Most people who have this issue either leave their tailgate open when making tight turns, swap it out with a net like the # TR-03, or swap it out with a 5th wheel tailgate like the # VGM-07-100 that has a cutout for...
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  • Redarc BCDC Battery not Getting Enough Charge from Car Battery to Last More than Two Days
  • If you are not getting enough power from your vehicle's battery to charge your Redarc In-Vehicle Battery, part # 331-BCDC1250D, for very long, you can supplement the power going into the RV battery with a solar panel like the Go Power Solar Flex, part # 34272630. We have an extensive selection here that runs the gamut of price and wattage. I've linked to this list for you. Also, be sure to check the manual linked below for the Redarc. Page 12 has a table for cable sizing. If you do not...
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  • Troubleshooting Factory Backup Camera Quality Degraded Following Third Brake Light Camera Install
  • I reached out to GCH and they said that the only thing that would cause this is a pinched wire during the installation. I would go ahead and double check all of the wiring you accessed during the # 3460010 installation to make sure all of the wires are in good shape.
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