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Expert Answers about GMC Sierra Classic


  • Recommended Air Springs For A 2007 GMC Sierra With In-Bed Hitch And 2 Lift
  • For your 2007 GMC Sierra 2500 with in-bed hitch and 2" lift I recommend the Air Lift LoadLifter 5000 Ultimate Air Springs w/ Internal Bumpers # AL88275 along with the Air Lift Universal Air Spring Spacers # AL52420 to fill in the 2" gap. These air springs have internal bumpers to provide the adjustable load support of air springs and the comfort and reliability of jounce springs. The durable stainless steel roll plates, air lines, and hardware are all rustproof. These springs have a...
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  • Will Curt 13932 Trailer Hitch Receiver Fit 2007 GMC Sierra Classic 2500
  • The Curt Trailer Hitch Receiver # 13932 is a confirmed fit for the 2007 GMC Sierra Classic 1500 with aftermarket Roll Pan Bumper. This will not fit your 2007 GMC Sierra Classic 2500. For a Class III hitch like this one that is confirmed to fir a 2007 GMC Sierra Classic 2500HD I recommend the Curt Trailer Hitch Receiver # C13108. This will fit a 6-1/2' bed. If you have an 8' bed, I recommend the Draw-Tite # 41944. Both have a concealed cross tube and a bolt on installation. Each of these...
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  • What would Functions of Black and White Trailer Wiring Colors be
  • Typically white is ground and black is power based on standard trailer function/colors. With that said not all lights and trailer wiring follows the standard colors. You can use a circuit tester like part # PTW2993 to test the wires when the various taillight functions are applied though to verify for certain.
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  • Is Curt Trailer Hitch 14108 a Fit for a 2007 GMC Sierra 2500HD Classic 6-1/2 Bed
  • Yes, I confirmed that the Curt 2" Trailer Hitch Receiver # C14108 is a fit for your 2007 GMC Sierra 2500HD Classic with the 6-1/2' bed. If you need a wiring connector then I recommend the Hopkins # HM40975 which will be an exact replacement to fit in the bumper cutout (if that's what you have). If you don't have the bumper cutout then this can be attached to the trailer hitch using the mounting bracket # 18136. To complete your towing setup you also need a ball mount. For that I recommend...
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  • Recommended Brake Line Kit for Use With Titan Model 60 Brake Actuating Coupler
  • The brake line kit that would be best for you will depend the number of brake assemblies, the length of the trailer and whether the brakes are drum or disc. If you have a single axle trailer using drum or disc brakes, and the distance between the actuator and the rear axle is less than 18 feet, the Kodiak # 18SI-BLKIT would work great. The flex hose is easy to work with, and you'll have no worries about a kinked brake line. For a tandem axle trailer with an actuator to rearmost axle distance...
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  • Hi Rise Hitch Compatibility with 2006 Chevy Sierra Dually Crew Cab
  • The Hi-Rise Gooseneck-to-5th-Wheel Trailer Hitch Adapter # 9480 is not a confirmed fit for every gooseneck hitch. The B&W hitches and the Under-Bed by Bulldog are confirmed to fit as well as the Hide-A-Goose hitches # 9460, # 9464, and # 9465. Any other hitch may or may not fit. There are not other adapter options for other fits. If you have a different gooseneck hitch, you may need to instead use the Demco Recon Gooseneck-to-5th Wheel Trailer Hitch Adapter - Single Jaw - 21,000 lbs...
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  • No 12V Power Or Trailer Brake Power To 7 Way Plug on 2007 GMC 2500HD
  • If both the 12V and trailer brake circuits on your 7-way have failed at or about the same time the most likely culprit is a corroded or damaged 7-way socket. You can inspect it for any signs of even very slight greenish or whitish discoloration on the contact surfaces. Check both sides of the 7-way. Sometimes if corrosion builds up it can actually bridge two circuits together, causing a short and malfunction of the affected circuits. If you find any evident corrosion clean or replace the...
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  • Parts Needed to Install Brake Controller in 2007 GMC Sierra Classic
  • Your 2007 GMC Sierra is pre-wired for a brake controller so to install the Brake EVN # TK63VR all you need is the harness part # 3015-P. This plugs into a port under your dash. I attached an install video that shows this installed on a similar truck for you to check out as well.
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  • Best Brake Controller Recommendation for a 2007 GMC Sierra 1500 Classic
  • For a brake controller for your 2007 GMC Sierra Classic I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how well it works and how easy it is to setup. The easiest way to install this controller will be to also get the install harness # 3015-P that will plug right into the port under the dash of your truck. You can use the harness you have, but you will have to do some hardwiring between that harness and the brake controller. Check...
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  • Which Torklift Hitch Fits 2007 GMC Sierra Classic 2500HD Long Bed
  • The Torklift hitch part # TLC1205 is the hitch you'd need for your 2007 GMC Sierra 2500HD long bed as the # TLC1204 only fits the short bed trucks.
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  • Do All 6 Bolts Need to Be Used to Install the Curt Trailer Hitch Receiver Part # 13322
  • You will need to attach and secure all 6 bolts holding the Curt Trailer Hitch Receiver part # 13322 to your 2007 GMC Sierra Classic. Not attaching all 6 bolts would void the warranty of the hitch and likely affect its capacities/performance. I recommend trying to bend the bumper back into place or buying a new bumper entirely as the two forward most bolt holes will need to be attached. To ensure the new bolts do not cross thread while attaching to the weld nuts on the frame you will want...
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  • Roof Rack and Bike Rack Recommendations for a 1996 Jayco Eagle Tent Trailer
  • If the roof of your tent trailer is a hard shell roof that is flat then roof rack # S80510 is a great option. But if the roof is curved there are no options. I do have another possible solution for you though. If you do go with the roof rack crossbars you will also need to add 4 roof bike carriers for the 4 bikes. You will also likely have to alternate the directions the bikes are facing to fit them all on the bars. A bike rack such as # TH598004 will fit the bars and you won't have to...
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  • Availability of a Chrome Tailgate Lock for a 2007 GMC Sierra Classic
  • We do have a tailgate lock in chrome for your 2007 GMC Sierra Classic, but the Pilot lock is not available in chrome. You can instead use Pop and Lock Custom Tailgate Lock, # PAL1100C. This part is for a chrome lock, not the bezel. I have included a link to the installation details for you.
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  • Compatibility of B&W Trailer Hitch Receiver with 285/70-17 Spare Tire
  • The B&W Heavy-Duty Trailer Hitch Receiver - Custom Fit - Class V - 2" # BWHDRH25182 is shown with the factory 245/70-17 tire which has a 30-1/2 inch diameter. The 285/70-17 tire you mentioned is 32.7 inches diameter so it hasn't been tested to confirm, but it does appear will fit because of the mount style but the tire will most likely rest the tread against the crossbar.
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  • Do the TruXedo Stake Pocket Covers for 1999-2013 GM Full Size Trucks Come In a Six Pack
  • The TruXedo Stake Pocket Covers for 1999-2013 GM Full Size Trucks part # TX1704212 only comes in a kit of four so if you have six stake pockets you will need to order two kits and just have a few extras.
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  • Curt TruTrack, Blue Ox Sway Pro or Equal-i-zer Weight Distribution Systems for 27 Foot Airstream TT
  • The Curt TruTrack # C17500 would work best on trailers with tongue weights between 700-1000 lbs, while Equal-i-zer and the Blue Ox SwayPro offer different systems for different trailer tongue weights. From a warranty standpoint, the Equal-i-zer and the SwayPro offer a limited lifetime warranty versus a 10 year limited warranty for the Curt. Equal-I-zer has focused primarily on weight distribution for a long time and they are an industry leader when it comes to weight distribution and...
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  • Availability of 5,200 Pound Trailer Axle for 5,200 Pound Disc Brake Kit
  • We do not have 5,200 pound regular straight axles but we do have an axle-less system, # ASR5200S04 and it will work with disc brake kit # T4871400. You will also need 2 bearing kits, # BK3-100, since the brake kit does not come with them. If you want a straight axle then you could order one to your specifications from a local tractor or trailer supply store.
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  • Why is my Brake Controller Reading Overload and How Can I Find Where the Problem is?
  • If your controller, item # 5504, is reading overload without the trailer connected then that means there is a short in the blue trailer feed wire on the vehicle. If the controller is reading overload only when the trailer is connected then there is a short or overload in the trailer wiring or breaks. Use a circuit tester, item # 3808 if you need one, to test the wiring to find out where the short is. If it is on the trailer end and you cannot find a wiring problem then the problem may...
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  • Would Bed Liner From 2009 GMC Sierra fit 2007 GMC Sierra Classic Body
  • There was a big enough difference between the new and classic body styles of the GMC Sierras that a bed liner from one would not fit the other. So for the 2007 GMC Sierra Classic short bed we have the part # BRC99SBK if you were looking for something that would fit and provides excellent protection for the bed of your truck.
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  • Suspension Enhancement Recommendation for 2007 GMC Sierra 2500HD
  • We do have the exact suspension enhancement you are looking for your 2007 GMC 2500HD Classic with the Roadactive kit part # RAS3611-HD. This kit gives you improved ride quality loaded and unloaded, has an easy install, is adjustable, and improves handling. This is only option we can guarantee will give you what you are looking for. The other options can help in some areas but typically they hurt ride quality and they aren't adjustable.
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