Expert Answers about GMC Topkick

• Adjusting the Settings on a Tekonsha P2 Trailer Brake Controller on a 2005 GMC Topkick 6500
• The P2, # 90885, is a proportional controller that applies the trailer brakes in proportion to how much the tow vehicle is braking. The braking on the trailer can be adjusted by adjusting the gain up or down as needed and by setting boost to the appropriate level based on the weight of the trailer. It sounds like you either need to adjust the power higher, set the boost on or higher, or both. In order to do any of these, I have included a link to the installation instructions for you to...
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• Troubleshooting Trailer Brakes Locking Up When Applying Brakes in 1993 GMC Topkick
• I first recommend making sure that your trailer brake controller is properly adjusted. On most controllers, you are able to adjust the settings to control the amount of power that is initially supplied to the brakes on the trailer. I am not too familiar with the Journey HD unit, but your manual should list the specific steps needed to adjust this setting. If the controller is set up properly, I next recommend checking both the vehicle side connector on your Topkick and the trailer side...
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• How to Connect a Tekonsha Prodigy P3 Brake Controller to a 2005 GMC C4500 Topkick
• You can install your Tekonsha Prodigy P3 # 90195 in your 2005 GMC C4500 Topkick, but, your vehicle does not have a brake controller port, so there is no adapter. But, never fear, there is a way to use your Prodigy with your truck. The P3 will need to be hardwired into your truck using a 4 & 7-Way Installation Kit, # ETBC7. Normally this would require the installation of a 4-way wiring harness first, which would then be plugged into the # ETBC7. But, since there is not a 4-Way wiring harness...
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• Does Demco 50-Degree A-Frame Trailer Coupler Bolt On
• The Demco 50-Degree A-Frame Trailer Coupler w/ Jack Hole - eZ-Latch - Primed - 2-5/16" Ball - 21K # 12660-97SP does not have any bolt information, with the reason being that this is a weld-on application and cannot be bolted on. I did cut out the relevant aspects of the weld-on info that is from the manual. I also added a link to a video review of the weld-on Demco 50-Degree A-Frame Trailer Coupler # 12660-97SP.
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• Torque For Installation of Dexter Electric Trailer Brake Kit 23-180-181
• According to Dexter, the torque should be between 25-50 ft. lbs. when installing the # 23-180-181. If you don't already have mounting hardware you'll need the Mounting Bolts and Hardware for 12" Brake Assemblies # BRKH12.
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