Expert Answers about GMC C-Series Medium Duty

• Gooseneck Hitch that Fits 2005 GMC TopKick C5500
• According to my contact at Curt, you could use the Gooseneck Flat Plate, # C65500, and mount it directly to the bed, assuming the bed is at least 1/4 inch thick steel, on your 2005 GMC TopKick Lo-Pro. In order to mount the flat plate to the bed you will need to use at least six 1/2 inch Grade 5 mounting bolts. By using this installation method, he can not guaranty the exact weight capacity but it should be close to 20,000 pounds.
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• Replacement Brake Controller for 2006 GMC C6500
• The Prodigy P2 part # 90885 would be a really great option for your 2006 GMC C6500 that has hydraulic brakes. This is widely considered to be the nicest and most reliable controller that would work great for you.
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• Tire Pressure Monitor System that Can be Used on Triple Axle Trailer up to 100 PSI
• The TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors # TST-507-FT-4-C is rated for up to 196 psi so it would work with the pressure ratings of both trailers you mentioned. To add more sensors you'd want the part # TST-507-FT-S2 for a pair. For a triple axle trailer you'd need the 4 sensors of the kit plus two additional sensors.
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• Hitch For C5500 GMC Truck
• For a commercial vehicle such as the GMC C5500 you will need an universal hitch such as the Curt # C97CR Class-5, with 2-1/2” receiver, and fitting frame beams 18” to 62” in width with a 20,000 pound tow capacity. If you do not need one as wide you could select the 44” wide Curt # C37CR, or the 44” wide Curt # C99CR hitch with an 18” drop and 16,000 pound tow rating. I have included links to each of these items.
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• Weight Distribution System Recommendation for Trailer that Weighs 9,800 lb
• The best way to pick out a weight distribution system is to base it off of the loaded tongue weight of the setup when it is loaded and ready to tow. This figure also includes the weight of any cargo behind the rear axle of the tow vehicle. I attached a help article on determining tongue weight for you to check out as well. You will want the loaded tongue weight of your setup to fall right in the middle of the tongue weight range of the system you use. Typically tongue weight is between...
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