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Expert Answers about GMC Sierra


  • Will There Be a Difference In Handling Between a Bias and Radial Tire
  • There isn't a difference in handling between bias and radial trailer tires; bias tires are designed more for hauling heavier loads and won't flex as much on the side walls. The downside is they'll run a bit hotter than radial tires that are designed for long highway trips where heat can build up. For a smaller camper you really could go either way and won't experience a lack of handling. You can go with the # AM1ST79 which are a bias tire, or the # LHCK105 which are a radial tire. Both...
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  • Comparing Reese and CURT 16K Fifth Wheel Trailer Hitches
  • Reese is a leader in the towing industry and we sell more Reese hitches than any other brand. The # RP30047 is height adjustable from 14-1/2 to 18 inches. The jaw on the Reese hitch is a double jaw style. This is a safe and secure style. Only the single hook is considered to be better. It has a double pivot head. Next we have the Curt E5, # C16115. It is nearly identical in specs with the exception being height adjustability. The Curt hitch is adjustable from 13-1/4 inches to 17 inches....
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  • How Does Auto-Leveling Capability Simplify Installation of a Trailer Brake Controller
  • The Tekonsha Voyager Proportional Trailer Brake Controller # 39510 will install in a 2002 GMC Sierra (if it is equipped with a factory 7-way) using quick-connect wiring adapter # 3025-P, which plugs in under the dash as shown in the linked video at the 4:54 mark. A brake controller that offers automatic leveling, such as the Prodigy P3 # 90195, does not require that the mounting position be exactly straight in order for it to operate properly. The Voyager does require that it is mounted...
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  • Demco Hijacker Fifth Wheel Hitch or Reese Elite Slider Recommendation for 2010 GMC Sierra Short Bed
  • I have a great solution for you. Since you are looking for an under-bed rail system that will leave your truck bed empty when the hitch is removed I would recommend you go with the Demco Hijacker hitch part # DM8550022 and underbed rail kit part # DM8551004. Since you have a short bed you will need a hitch that has a slider so that you can have enough clearance to make tight turns. The Reese Elite Slider hitch part # RP30144 and Rail Kit part # RP30061 is a GREAT option, but this setup...
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  • Difference Between Curt 15312 and 15313 for 2005 GMC Sierra 2500
  • The hitch you need depends on the bumper you have now on your 2005 GMC Sierra 2500. The Curt # C15312 is designed to fit if your truck has the factory cutout bumper. More than likely this is what you have on your truck. The # C15313 is designed for models that have the 10" deep drop bumper.
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  • Comparison of Fifth Wheel Rails Part # RP58058 and Rails in Install Kit Part # RP30035
  • In short, yes they are the same. Part # RP58058 is just the rails. Part # RP30035 is the same rails and a universal bracket kit for trucks that do not have specific bracket kits. The part you were looking at, part # RP50064-58, is the fifth wheel kit I would recommend for your 2009 GMC Sierra. The custom fit brackets in that kit will significantly reduce install time as they use as many factory drilled holes as possible to reduce the amount of drilling necessary for install. We have a...
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  • Difference Between Flat and Convex K-Source Mirrors
  • I can confirm both of these mirrors will fit a 2001 GMC Sierra, there is a subtle difference between them. The K-Source # KS69ZR has a flat mirror that gives you a clear, but somewhat limited view. The K-Source # KS3891-2 has a convex mirror that will make reflections smaller, allowing you to see more.
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  • Options For Valterra City Water Inlet and Lockable Hatch for RVs
  • The Valterra City Water Inlet and Lockable hatch # a01-2004vp has a plastic fitting and the other # a01-2000vp has a brass fitting. If you plan on traveling to colder climates, I would recommend getting the brass fitting.
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  • Is There Strength Difference Between Universal and Custom Install Kits for Fifth Wheel Hitches?
  • There will be no difference between the strength of a universal kit such as Reese offers, # RP30035, and a custom kit like the Curt Custom Fifth Wheel Installation Kit, # C16418-204. Each product will work with your 2003 GMC Sierra 2500, with the difference being that the custom fit of Curt will significantly reduce the install time, which is an important consideration for those who choose to install the kit by themselves.
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  • Comparing BWGNRK1012 and BWGNRK1012-5W Gooseneck Hitches for a 2013 GMC Sierra 2500HD
  • The B&W Gooseneck Hitch # BWGNRK1012 and # BWGNRK1012-5W are the exact same kit and will work with both your 2013 GMC Sierra 2500HD and the B&W Companion Slider # BWRVK3400 that you referenced. Basically the -5W at the end of the one part number was needed so that it can be put in our fitguide under the 5th wheel towing category, otherwise it messed up the system which is why the -5W isn't on the part under the gooseneck towing category. Attached is an installation video of the gooseneck...
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  • Comparing Bearing Buddy and Kodiak Red Eye Trailer Bearing Protectors
  • You can use bearing protectors on a hub with electric brakes. You have to make sure you are using a double lip seal though because a single lip seal is more likely to blow and allow grease to leak out and get all over the hub and brake components. Also, you have to make sure that you do not use too much grease, even with a double lip seal, because of the same possibility of blowing the seal. Based on the numbers you have provided you will likely need a 10-19 seal, # RG06-050 for a pair....
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  • Difference Between # HE4045 and # HE4047 HitchMate TruckStep Extendable Hitch Mount Steps
  • The difference between HitchMate TruckSteps, parts # HE4045 and # HE4037 is that the latter is the XL version which has a larger step pad and extends 2 more inches than the standard version. The # HE4045 measures 9-1/4 by 5-1/2 inches and the # HE4037 measures 11-1/4 by 8-1/2 inches.
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  • What is the Difference Between Curt C14008 and Curt 14211?
  • The difference between the Curt # 14211 and the Curt # C14008 is pretty subtle, but it has to do with how they mount to the frame of the vehicle. The Curt # 14211 mounts in factory drilled holes further forward in the frame allowing it to fit on a 2003 GMC Sierra 2500 HD with an 8 foot or 6 foot bed. The Curt # C14008 will only fit models with an 8 foot bed. The capacities are otherwise identical
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  • Comparing Derale Transmission Coolers for 2009 GMC Sierra SLT 1500 5.3L Towing 26ft 5,400lbs Trailer
  • Good news, I can help you compare the two Derale transmission coolers as well as help you select the right one for your 2009 GMC. The main differences of the two transmission coolers # D13503 and # D13504 are the size and Class number. The # D13503 measures 11 inches wide and 8-3/4 inches tall while the # D13504 measures 11 inches wide and 12 inches tall. The # D13503 has a Class III rating and the # D13504 has a Class IV rating. The Class rating to let customers know that if they have...
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  • Differences Between Pro Series 20K 5th Wheel # PS30121 and Reese 20K # RP30084
  • The design of the head unit is the difference between the two fifth wheel hitches you mention. The Pro series uses a double jaw set-up to lock the king pin into place, while the Reese model uses a single hook that holds the king pin more tightly, preventing any movement of the king pin that would be felt by the driver or passengers. The funnel on the Reese unit is also much wider, which makes hitching the vehicle to the trailer easier. The entire top plate is wider, providing more stability...
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  • Correct B&W Turnoverball Underbed Gooseneck Trailer Hitch for a 2011 GMC Sierra 2500/3500
  • The B&W Turnoverball Underbed Gooseneck Trailer Hitch part # BWGNRK1012-5W and part # BWGNRK1012 are the exact same, both fits for a 2011 GMC Sierra 2500/3500.
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  • Differences Between Curt 5th Wheel Kit # C16616 and Curt E16 5th Wheel Trailer Hitch # 16516
  • The Curt E16 5th Wheel Trailer Hitch Kit # C16616 differs from Curt E16 hitch # 16516 in that it includes a universal base rail kit along with the hitch unit itself. Universal install kits are the most cost-effective option but do take longer to install and they do require drilling into the truck's frame. A simpler option is a custom-fit bracket kit such as the Curt Custom install kit # C16418-204 that will save you considerable installation time. You can use the Curt E16 # 16516 hitch...
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  • Comparing The Demco Recon And Curt CrossWing 5th Wheel Hitches
  • The Demco Recon # DM8550043 and Curt CrossWing # C86JR have quite a few differences that separate the two similar designs. The Recon has an extra 1,000lbs of capacity and comes with a 15-1/2", 17-1/4", or 18" height setting. The CrossWing has a 16-3/8", 18-3/8", and 20-3/8" height setting so it can sit a bit higher, which could be beneficial depending on the height need for your trailer to sit level while towing. Both heads have rubber dampeners to help with ride quality, but the CrossWing...
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  • How to Choose the Proper Timbren Rear Suspension for a 2005 GMC Sierra 2500 HD
  • For your 2005 GMC Sierra 2500 HD, there are two Timbren rear suspension compatible with it. The # TGMRCK25S have a weight capacity of 6000 pounds while the # TGMRTT35S have a weight capacity of 8000 pounds. More than likely you will only need the one with the 6000-pound capacity as the higher capacity one is for trucks that are reaching their payload capacity on a daily basis. Though you're hauling dump trailers every day, that doesn't mean you're nearing your capacity. Of course, if...
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  • Comparing Timbrens Jounce Style Springs To Firestone Air Springs For A 2013 GMC Sierra
  • The Timbren Rear Suspension Enhancement System Item # TGMRCK15S replaces the factory jounce bumper so they are easy to install on your 2013 GMC Sierra 1500. Because the Timbrens are bigger than the factory jounce bumper, when weight is added to the back of the vehicle, the spring is going to make contact with the rear axle sooner. This means it is providing support sooner than a factory jounce bumper would. With the Timbrens you also have no maintenance and when there is no weight in the...
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