Parts Needed to Flat Tow 2004 GMC Sierra 1500  

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In order to flat tow your 2004 GMC Sierra 1500 behind your RV, you will need a base plate kit, tow bar, safety cables, a lighting solution, and a supplemental braking system. I also recommend checking your owner's manual for the Sierra for any specific guidelines or restrictions when it comes to towing the truck with all four wheels on the ground.

Starting with the base plates, if your Sierra 1500 is the LD model, I recommend the Blue Ox Base Plate Kit # BX1682. If you have the HD model, you will instead need the Blue Ox # BX1660. Both models feature hidden reinforcements and removable bracket arms to provide a clean look when you aren't towing.

Then, for a great Blue Ox tow bar that will work nicely with the above base plates, I recommend the Blue Ox Alpha # BX7380. This 6,500 pound rated tow bar has a self-aligning design to allow for easy hookup and safety cables are included so they won't need to be purchased separately.

For a wiring kit/lighting solution, I recommend the Hopkins Custom Tail Light Wiring Kit # HM56101. This custom harness will plug into existing ports behind the truck's tail lights and provide you with a 4-Way flat connector to connect with your RV. This will wire the Sierra so that it accepts the RV's tail, brake, and turn signals.

Then for a supplemental braking system, I really like the Blue Ox Patriot # BLU37TR. This is an excellent, proportional system that will physically press down on the brake pedal in your Sierra at the same time and with the same intensity that you apply to it in your RV.

Lastly, you will likely need a high-low adapter in order to keep the tow bar level. I have attached an article that explains exactly how to choose the best one for your setup, along with a link that will take you to our available selection. I have also included installation instructions and videos on the products mentioned and an additional article on flat towing that you might find helpful.

expert reply by: Chris R

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