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Expert Answers about GMC C-Series Medium Duty


  • Trim Kit for 22" Kwikee Heavy Duty Tray Assembly Kit for RV Cargo Compartment
  • The trim kit for the Kwikee Heavy Duty Tray Assembly Kit for RV Cargo Compartment # LC370794 is part # LC380319. This is 32" long but can be cut to accommodate the width of your cargo compartment.
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  • 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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  • Dimensions for Mounting Holes on Polar T-Handle Latch
  • The T-Handle Latch - Stainless Steel # PLR5730 has holes 3-3/4 inches on center horizontally and 3-1/4 inches on center vertically. I've attached a photo to assist. The # L4080 has the same dimensions.
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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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  • Replacement Landing Gear for 2006 Forest River Cardinal to Upgrade Lift and Leveling
  • The Electric 5th Wheel Landing Gear Set - 36" Travel # RP500708 will work on your 2006 Forest River Cardinal and will not require a separate battery. These upgraded landing gear have the same mounting locations as most systems, so you should be able to reuse your old C-brackets. I've attached a video as well as the installation details to assist. You will just want to note the brackets are 17-1/2 inches apart to fit the weld stops.
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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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  • 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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  • How to Identify Connection Point for Red Input Signal Wire on Brake Controller
  • The correct wire on a vehicle to connect to the red input signal wire on a brake controller like the Prodigy P2 # 90885 is the one at the cold side of the brake light switch. The cold side of the switch is the wire that shows 12V power ONLY when the pedal is pressed and at no other time. Use of a voltmeter or circuit tester like # PTW2993 will make it easier to identify the correct connection point for the controllers input signal. The linked video shows how the tester is used to detect...
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  • What Color are the SumoSprings Solo Custom Helper Springs # SSF-281-47 ?
  • The SumoSprings Solo Custom Helper Springs # SSF-281-47 are black in color. These have a 1,500lb capacity rating when compressed to 50% of their height.
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  • Will RV Air Conditioner Replace Coleman Mach El Air Conditioner
  • In order to find out if there is a replacement air conditioner that will allow you to use your existing Coleman Mach El wiring and distribution box you need to know what model it is. I have added documents from Advent which show the compatibility of their units with the different models of Coleman air conditioners so you will need to compare your model with this to see if it will work. If so you can use any of the following as replacements: - Advent Air Replacement RV Air Conditioner...
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  • Replacement Trailer Coupler for 2-1/2 Inch Channel with 1-7/8 Inch Ball Coupler
  • The only coupler we have that is a fit for your 1-7/8 inch ball and 2-1/2 inch channel is the Channel Tongue Trailer Coupler # CT-2002-Z. The bolt holes on this are 2-1/4 inches on center instead of 2-1/2 inches.
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  • Will K-Source Custom Extendable Towing Mirrors Have All Functions As OEM Mirrors On 2005 GMC Sierra
  • The K-Source Custom Extendable Towing Mirrors w/ Turn Signals, part # KS62075-76G are designed to be a replacement for the OEM mirrors you have on your 2005 GMC Sierra 1500. These mirrors will have the turn signal feature as well as the heated feature. The memory function is a patented feature that aftermarket manufacturers are not allowed to duplicate, so they will not adjust to the memory settings.
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  • What Size Receiver Comes on the Buyers Products 3371809065
  • The Buyers Products # 3371809065 has a 2" receiver, so you would need a ball mount that will fit in that receiver like the Curt Heavy Duty Forged Ball Mount # C45342. Which hitch ball you would use depends on the ball hole diameter of the ball mount and the size of the coupler on the trailer you'll be towing. The Curt # C45342 has a 1-1/4" diameter ball hole, so you'd need a hitch ball with a 1-1/4" shank diameter like the # A-90 for 2" hitch ball or # C40085 for a 2-5/16" hitch ball.
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  • Replacement Lug Nut Covers For The Phoenix USA Rear hub Cover # PXQ820R
  • Hi Jose, Phoenix USA doesn't list the lug nuts of the Phoenix USA Rear Hub Cover w/ Pop Out # PXQ820R as a replacement item but I'm sure if you gave them a call they be happy to send you some replacements.
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