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Expert Answers about GMC Sierra


  • How to Determine Towing Capacities of a Vehicle with and without Weight Distribution
  • The limiting factor of a towing setup is always the weakest component. What you need to do is find out the overall towing capacities of the vehicle with a weight distribution system as well and you will know all of the capacities for the truck. Typically in the towing section of the manual there will be a weight carrying capacity as well as a weight distribution capacity listed right next to it. If the truck can only safely tow a certain amount you can not increase this capacity just by...
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  • Recommended Gooseneck Hitch That Will Work With Reese Above-Bed Fifth Wheel Rails
  • We have just what you need for your 2003 GMC Sierra. I recommend the Reese Above-Bed Gooseneck Trailer Hitch, part # RP58079. This hitch will fit standard above bed fifth wheel rails. This hitch includes the safety-chain loops. The hitch has a gross towing weight capacity of 25,000 lbs. In order to be able to lock the hitch to the rails you will need part # RP58093. I have attached a link to a product review video you can check out.
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  • Spindle and Hub Upgrade Recommendation for an Agricultural Spindle
  • Based on the inner diameters of the bearings you have I was able to determine that you have an agricultural spindle on your axles that is part AS2500F. Since you are wanting to keep your axles and go with a hub that will give you a 6 lug bolt pattern your only option that we can provide would be to have your spindles removed and replaced by a qualified professional. Also, I can't recommend you use truck rims on your trailer either. You will want to use a rim rated for use on a trailer. So...
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  • Replacement Hardware Kit for Westin Sportsman Grille Guard for 2004 GMC Sierra
  • For the Westin Sportsman Grille Guard part # 40-1265 that fits your 2004 GMC Sierra the correct replacement hardware kit is the part # 40-126PK.
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  • Prodigy P2 Brake Controller Recommendation and Installation Information for a 2008 GMC Sierra
  • The P2 Brake Controller part # 90885 that you referenced would work very well on your 2008 GMC Sierra. There are 4 blunt cut wires under the dash of your vehicle that you will use to install this brake controller. Check out the FAQ article I attached on installing brake controllers in trucks like yours, and the install video that will show you exactly how it is done.
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  • TracRac Sliding Ladder Rack that Fits 2013 GMC Sierra 1500 5.5 ft Short Bed
  • We do have a Thule sliding ladder rack that fits your 2013 GMC Sierra 1500 5-1/2 foot bed with the part # TH43002XT-608. This works great with the BAK Revolver X4s tonneau part # BAK65VR as it installs far enough to the inside of the bed rails for the ladder rack to fit and still allow the tonneau to roll up.
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  • Recommended 5th Wheel Hitch for 2012 GMC Sierra 2500HD 4x4 with 6-1/2-ft Bed
  • Sliding 5th wheel hitches are recommended for towing with a short-bed pickup like your 2012 GMC Sierra 2500 HD Series with 6-1/2-foot bed. Sliding hitches from B&W and Demco are the ones I most often recommend because of their build quality (both are made here in the USA). Their products cost more because they are worth more. They are beautifully made products that inspire confidence, potential sticker shock notwithstanding. Although you state your trailer will not ever be loaded up to...
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  • Best Underbed Gooseneck/Fifth Wheel Hitch Recommendation for a 2008 GMC Sierra
  • That's an easy one, the best 5th wheel hitch/gooseneck hitch available for your 2008 GMC Sierra 2500 short bed would be the B and W Companion hitch # BWRVK3400-5W. The rail kit for this hitch (that is underbed) that also doubles as a gooseneck hitch is the Custom Underbed Installation Kit # BWGNRK1067-5W. This would be a perfect setup for you. I attached an install video for you to check out as well.
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  • Will the Hopkins Smart Hitch Backup Camera Work with a Pioneer Radio
  • The Hopkins Smart Hitch Backup Camera and Hitch Aligner System part # HM50002 will not plug into the back of a Pioneer Radio nor do we have a system that would. They like the Hopkins Smart Hitch Backup Camera are all designed to work with a specific monitor which is generally included with the kit. If you do not want to have another bulky monitor on your dash then we do have the Rear View Safety Backup Camera System part # RVS-778718N which display the reverse image on the rear view camera. I...
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  • Recommended Override Switch To Jump Dead Battery With Redarc Smart Battery Isolator 331-SBI12KIT
  • For the override function of the Redarc Smart Start Battery Isolator with Wiring Kit - 12 Volt - 100 Amp # 331-SBI12KIT that allows you to jump start a dead starting battery with the auxiliary battery you will need a standard momentary switch like the # BDW20284. You will wire the switch in one of the three ways shown in the included diagram. I also included a video review of the products mentioned for you to take a look at.
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  • Preventing Exhaust from Melting Mudflaps of Rock Tamers ERT00108 Mud Flaps
  • If you can install the Rock Tamers so that the flaps are not situated right in front of your exhaust pipe, they should work very well for you. However, if the flaps fall right in front of where your exhaust discharges, you will likely have the same problem. Rock Tamers makes a stainless heat shield, part # ERT230 that can be installed on the flaps to protect them from the heat from the exhaust, so that's what I'd recommend using.
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  • Replacement Gooseneck Ball Recommendation for a Hide-A-Goose Gooseneck Hitch
  • Yes, the Hide-A-Goose Gooseneck Hitch ball part # 19309 would be the correct replacement gooseneck ball for a Hide-A-Goose Underbed Gooseneck Trailer Hitch with Installation Kit # 9465-34 that you also referenced.
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  • Fifth Wheel Rail Kit Recommendation for 2000 GMC Sierra 2500LD
  • For your GMC Sierra 2500 LD short bed the rail kit you need is the # RP50064-58 which is a confirmed fit and will allow you to use the Gooseneck adapter part # RP58079.
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  • Where to Measure to Determine If TorkLift GlowStep Revolution Scissor Steps # TLA8104 Will Fit
  • You want to measure from the ground to the bottom of the door opening. If it's between 32-1/2 inches and 40 inches the TorkLift GlowStep Revolution Scissor Steps # TLA8104 would be a correct fit. The mounting base dimensions are 25-7/16 inches wide.
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  • Rear Helper Springs for a 2002 GMC Sierra 4x4 1500 LD Extended Cab
  • The ideal way to prevent rear end sag when towing a trailer is to use weight distribution. Helper springs are designed for loads carried in the truck which is why they aren't the best option for this situation. But I will give you both options. First since you are interested in helper springs we can look at those first. The SumoSprings # SSR-209-40 could work but the trailer, if heavy enough, could still cause squat. A stiffer systems such as Timbren springs # TGMRCK15S (for the 3-door...
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  • How to Pick Out a Sidewinder Pin Box for a Columbus 340rk Trailer
  • There should be a Sidewinder that would work on your Columbus 340rk. You will need to determine what pin box came originally on your trailer so that you can pick out the correct Sidewinder to replace it. There should be a sticker or a stamping on the OEM pin box of the trailer that will list the pin box number that is on the trailer. Once you figure out which pin box you have you can check the FAQ I attached that has a chart that shows the correct Sidewinder to get based on which pin...
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  • Tailgate Mounted Bike Rack Recommendation for 2009 GMC Sierra
  • The closest bike rack to what you described is the Thule Insta-Gator part # TH93VR that you referenced. It installs by using straps that clamp between the tailgate hinge and the truck bed like you mentioned being interested in. Check out the install video I attached for more info as well.
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  • Best Cost Effective Ladder Rack for a 2000 GMC Sierra 1500
  • The Erickson Ladder Rack # EM07706 is arguably the best rack for the dollar that fits your 2000 GMC Sierra 1500. It has a weight capacity of up to 800 pounds which is higher than even some of the more expensive racks. It fits both the 6-1/2 and 8 foot beds as well. However, it is a clamp-on design and doesn't bolt to the truck. There's actually no drilling required. I've linked an install video for you.
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  • Will Existing Reese 16K 5th Wheel Hitch Fit 2008 GMC Sierra Dually
  • Yes, your existing Reese 16K 5th Wheel Hitch # RP30047 will work great in your new 2008 GMC Sierra dually model truck. In order to mount the hitch you will just need a new set of base rails and frame brackets. For the Sierra I recommend the Reese Quick Install Installation Kit # RP50064-58. These industry standard base rails will work perfectly for your Reese Hitch and the included custom brackets will use existing holes in your truck's frame to eliminate the need to drill into it and...
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  • Best Air Bags For 2013 GMC Sierra 1500 Short Bed That Frequently Goes Off Road
  • The Air Lift Ride Control Air Helper Springs # AL59565 do not offer any lower cups to protect the air bags. I really would not recommend using these for off road driving as they are very vulnerable with their mounting location. As your 2013 GMC Sierra will be off road frequently I recommend using the Air Lift LoadLifter 5000 Ultimate Air Springs w/ Internal Bumpers # AL88204. These use an internal jounce bumper which will help to absorb shock when off road. The Air Lift WirelessAIR...
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