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Expert Answers about GMC Sierra


  • Fifth Wheel Trailer Wiring Recommendation for a 2011 GMC Sierra
  • The easiest solution I can provide for you would be to use the Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector - 10' Long # C56000. Your current harness is going to be too short to be ideal like you have determined so this would work well for you as it will allow you to install the connector exactly where you want it.
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  • Will MagnaFlow Exhaust be Too Loud in the Cab of a 2004 GMC Sierra 1500 5.3 Liter
  • MagnaFlow exhaust such as # MF15778 has an aggressive, throaty sound. I had a set on a Grand Prix GXP with the same 5.3 liter motor (see video link). Now in that car it did have a drone inside the vehicle but so did the stock system so it didn't bother me. On a truck though the distance is greater from the cab to the exhaust so it likely would not be as loud in the cab of your 2004 GMC Sierra especially with a side exit, single pipe. One thing is for sure, it will sound good. I haven't...
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  • Can Curt E16 Fifth Wheel Hitch Head be Swapped Out and Upgraded
  • Yes, the Curt E16 Hitch Head can be swapped out for the Curt A-Series or Q-Series. The A-Series is the new design and what I recommend using. It has a more secure locking jaw system than the Q-Series among a few other things. I recommend using part # C16520 or if you want to upgrade capacity, part # C16540 for 20,000 lbs.
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  • Replacement for Atwood 84132 Drum Brake Actuator
  • We have the perfect replacement for your Atwood 84132 drum brake actuator, the Demco # DM72VR. Just like your Atwood, the Demco is for hydraulic drum brakes, rated for 7,000 lbs instead of 6000 lbs, mounts to a 3" wide trailer tongue and fits a 2" ball. It also has a trigger-style latch, zinc plating and is made in the USA.
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  • Brake Controller for 2005 GMC 3500 with Allison Electronic Down Shifting Transmission
  • The Tekonsha P-3 Brake controller, part # 90195 should work just fine with your vehicle. You will also need a vehicle specific wiring harness, # 3051-P that will plug into a port under your dash and make the installation a plug and play. I have added a link below of the most popular brake controllers and the harnesses for your vehicle. I would stick with proportional controllers as they will provide smoother braking with a down shifting transmission.
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  • Solution for Chucking While Towing with Ranch Hitch Fifth Wheel to Gooseneck Adapter
  • Sounds like you are using the Ranch Hitch part # AM3100 to convert a fifth wheel trailer to be towed by a goosneck hitch. This adapter is not cushioned at all. We do have the similar Convert a Ball part # CAB-C5G which is cushioned which would relieve some of the chucking you are experiencing. Or if you have a standard gooseneck coupler and hitch setup you could replace it with a cushioned gooseneck coupler part # CG.
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  • Brake Controller that Will Work with Electric and Electric Over Hydraulic Trailer Brakes
  • If the trailer with hydraulic brakes uses a surge coupler (the coupler pushes in when the vehicle slows to send fluid back to the trailer brakes) then you can use any brake controller you want. But if the trailer with hydraulic brakes has an electric over hydraulic brake actuator then you will need a compatible brake controller. There are a couple of controllers I normally recommend for both regular electric brakes and electric over hydraulic brake systems. They are the P2, # 90885, and...
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  • 5th Wheel to Gooseneck Adapter for a 2003 GMC Sierra 3500 Crew Cab with Curt Gooseneck Hitch # C-52
  • I may have an option that will work for you, however, the Curt X-5 Gooseneck to Fifth Wheel Adapter, # C16210, will not fit in the Curt Folding Ball Gooseneck Hitch, # C-52, that you have installed in your 2003 GMC Sierra 3500. The X-5 adapter was designed to work with the Curt Double Lock, Flip and Store Gooseneck Hitch, # C60625. We do have other fifth wheel to gooseneck adapters that should work for you. One of our most popular adapters is the Convert-A-Ball Cushioned Fifth Wheel Adapter,...
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  • Will Pop & Lock Tailgate Lock PAL9900 fit a 2010 GMC Sierra
  • Yes, the Pop & Lock Tailgate Lock for Pickup Trucks # PAL9900 that you referenced has been confirmed as a fit for your 2010 GMC Sierra 1500 and would work well. I attached an install video for you to check out as well.
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  • Does U-Ace Mat part # L1CH01822209 Fit 2010 GMC Sierra with Vinyl Floor
  • For your 2010 GMC Sierra the U-Ace mat part # L1CH01822209 will fit well and not move around. It was designed to fit tightly to the shape of the floor boards of your truck so it would not move around at all.
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  • Where to Find Third Brake Light Circuit for Truck Camper Shell Third Brake Light
  • The main trailer wiring harness is located under the truck bed, usually above the spare tire. There is usually a socket for your trailer connector to plug into, but if you peel back the wire loom you will find a light blue wire further up in the wiring harness that is intended for use for a third brake lamp on a camper shell. I attached a couple pics to help you see where the wire is at.
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  • Custom 5th Wheel Bracket and Rail Kit and 16K 5th Wheel Hitch for a 2011 GMC 2500 HD Short Bed
  • We have several 16K fifth-wheel installation kits and hitches that will fit on your vehicle, see link. The most economical kit is the Curt E5 16K Fifth Wheel Trailer hitch, # 16516, and the Curt Custom Fifth Wheel Installation Kit, # C16411-204. The slider included with this unit moves the hitch 12 inches rearward for maneuvering in tight situations. Next, we have the Reese 16 K 5th Wheel Trailer Hitch with Square Tube Slider, # RP30051, and the Reese Quick-Install Custom Base Rails and...
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  • Recommended Gooseneck Hitch for a 2008 GMC Sierra and Trailer with a Ranch Hitch 5th-Wheel Adapter
  • I would recommend the Curt gooseneck hitch kit # C615-632 for your truck, which will work whether you have a 6-1/2 or 8 foot bed on your 2008 GMC Sierra. Please note that if your truck has a 6-1/2 foot bed, you should be using a fifth wheel to gooseneck adapter that has an offset to give you enough clearance in tight turns. Ranch offers the offset section as a replacement part # AM3140, if needed. It would be a good idea to purchase the Ranch Hitch safety chains, part # AM3109. The Curt...
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  • Recommended Ball Mounts For Hitch Balls With 1-1/4 Inch Shank
  • If you are looking for a hitch ball with a 1-1/4 inch shank to fit your ball mount, we offer several to choose from. You would just need to know the ball size you need and what length shank you need on the hitch ball. If you need a 2 inch ball with a medium length shank I recommend part # A-90. This hitch ball has a 10,000-lb towing weight and the shank measures 2-5/8 inches. I have attached a link to our product page for the hitch balls we offer that you can choose from. If you are looking...
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  • What is Hitch Drop for Curt Hitch # C15312
  • The confusion is that the two answer pages have two different hitches they are referring to. The # C15312 measures 2-3/4 inches from the mounting flange down to the hitch opening and the # C15313 measures 5-5/8 inches. I attached a picture that has both dimensions shown on the different hitches.
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  • Is GM OEM Brake Controller Compatible w HydraStar Electric over Hydraulic Brake Actuator # HBA-12
  • Even though our experience tells us that aftermarket controllers are typically more reliable than the OE controllers, if the factory brake controller on your 2007+ GM truck is functional it is not necessary to disable it in order to use a generation 6 or newer HydraStar Electric/Hydraulic trailer brake actuator like the # HBA-12 you mentioned. You would simply need to use the Control Adapter Module, part # HBA-CAM. The adapter module will allow your factory controller to work with the...
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  • Recommended 5th Wheel Base Rails and Brackets for 2003 GMC Sierra 2500HD 8 Foot Bed
  • For your 2003 GMC Sierra 2500, I recommend the Reese Quick-Install Custom Base Rails and Installation Kit # RP50064-58. This kit is custom-fit for your truck and will use existing holes on the frame for installation, cutting installation time in half when compared to universal kits. The custom brackets are indeed the full plate design as opposed to the L-brackets used for similar kits. Your Reese 30046 5th Wheel Trailer Hitch is compatible with standard, above-bed base rails so it will...
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  • Recommended 30 Amp Supply To 50 Amp RV Adapter And Surge Protector
  • For your 2018 Wildcat 262RGX with 50 amp service, I recommend the Camco RV Power Defender Circuit Analyzer Dogbone - 125V - 50 Amp # CAM55313. This will prevent your system from a surge that could hurt your trailer's electrical components. This needs to be run behind your adapter when using a 30 amp service, but can be plugged directly into your power supply when a 50 amp service is available. For your adapter, I recommend the Power Grip RV Power Maximizer - 50 Amp Female to 15 Amp...
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  • 5th Wheel Rail Kit and Brake Controller Recommendation for 2008 GMC Sierra 2500HD
  • Yes, the Curt fifth wheel rail kit part # C16418-204 that you referenced is a confirmed fit for your 2008 GMC Sierra 2500HD Silverado. I attached an install video for this rail kit for you to check out as well. For a brake controller 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. This is a proportional brake controller that senses the amount of braking the tow vehicle is...
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  • Transmission Cooler Recommendation for 2010 GMC Sierra 1500
  • In most cases the factory transmission cooler is adequate at best for normal use of a truck. For your 2010 GMC Sierra 1500 I would highly recommend you add a supplemental cooler like the # D13504. You will also want the snap-in fitting part # D13035 to make the install easier as well. I attached an install video that shows the cooler mentioned being installed in a similar full size GM SUV for you to check out as well.
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