Installation Guide for the Air Lift LoadLifter 7500 XL Air Helper Springs on a 2021 GMC Sierra 2500

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Full transcript: https://www.etrailer.com/tv-install-a...
Hey, everybody. How's it going Today, we're gonna be going over and showing you how to install the Air Lift LoadLifter XL air helper springs here on our 2021 GMC Sierra 2500. So in order to see how much of a difference our airbags can make, we're gonna be taking some measurements here of the stock suspension unloaded so we can show you how much it changed once we put some weight in the bed and add our airbags. So keep in mind, these measurements we're just using as a reference point. You don't need to worry about your measurements matching these measurements or your measurements being different. But at the rear here, we're gonna measure from the ground to the top inside edge of the wheel well, the bottom edge rather.

And at the rear here, we're looking at about 42 inches. Now, let's set up to the front of the truck and measure the same thing. So now we're up here at the front of the truck. Go ahead and take that same measurement. And we're looking at about 41 inches.

So it looks like the factory rake on this particular model here is gonna be about one inch. Now let's go ahead and throw some weight in our truck bed here so we can see how our measurements change. So now that we got some weight in our truck bed here, just as a point of reference again, we've got about 1,500 pounds or so. So now, we're gonna go ahead and retake our measurements. At the rear here, we're looking at about 40 inches.

Therefore, we dropped about two inches here in the rear. Now, let's head up to the front of the truck and take our same measurement there. So now, if we measure the same in the front here, we're looking at about 41 1/2 inches. Therefore, the front of our truck came up about a 1/2 inch. Now, let's take our truck out on the test course here, so we can show you how it performs.

So now, let's head over to our test bump course here. Get over these first couple bumps here. I do notice the truck, the back end of it, is definitely bucking around a little bit. They get a lot more bounce than normal. Now, we're over here at our slalom course here. Let's get up to speed, do some evasive maneuvers. So when we hit those sharp corners there, we're definitely getting some body roll here. And that's basically our truck rocking back and forth on the chassis. So a little bit of a decrease in overall stability, and the steering I would say is not quite as responsive. So now, with our airbags installed, pressurized, and our weight back in the truck bed here, we can retake our measurements. So at the rear here, we are back to our 42-inch factory ride height. So now, let's go ahead and take that same measurement at the front. And then, for front here, we're right back at 41 inches from the bottom of the fender here. So again, back to the factory ride height at the front as well. Now, let's take it back on our test course here so we can see if we notice a difference. So now, we're over here at our test bump course. So it definitely feels a little bit stiffer, but there's not nearly as much bouncing around as we did before. So now, we're back over at our slalom course here. Get up to speed, make some evasive maneuvers, and right away, we do notice the steering is definitely a lot more touchy than it was before, and we don't have nearly as much body roll. Therefore, we feel a little bit more planted to the road here. We don't have that rocking back and forth feeling we did earlier. So adding air helper springs to your truck here, it's gonna be an excellent option if you find yourself doing a lot of heavy hauling or heavy-duty towing. Now, the reason adding suspension enhancements such as airbags is important, it's because when we're hauling those heavy loads or we have a heavy trailer hooked up, our truck is gonna sag to the rear here. We're gonna be offsetting the factory rake. Now, by doing this, your truck's not only gonna look a little funny, it's also gonna cause some performance issues, which we'll go over now. So one of the minor things that not a lot of people think about until they get out in the road and they're driving, especially at night, is that our headlight aim is gonna be off. So since we've added a lot of weight to the rear of the truck, the front of the truck is actually gonna be pointed up. Therefore, we're not gonna get a great visibility of the road and what's ahead. We're also gonna be blinding other motorists. So somethin