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2007 GMC Sierra Air Bag Suspension - Lay Out a Late Model

2007 Gmc Sierra Custom Airbag Suspension Drill Holes
Jared then drilled holes into the original frame and around the notch to provide more surface area for a secure weld joint.
2007 Gmc Sierra Custom Airbag Suspension Weld Gaps
A large vise was then clamped down onto the frame. This squeezed the frame tight against the notch and the gaps were welded together. Several gussets were welded inside the cut areas of the frame to keep everything structurally sound.
2007 Gmc Sierra Custom Airbag Suspension Check Clearance
After grinding the welds smooth, Jared and Reed were able to hoist up the rear end and check the notch for clearance.
2007 Gmc Sierra Custom Airbag Suspension Four Link
It was time to move to the AVS four-link, which included urethane bushings, zerk fittings for grease, and adjustable collars. More measurements were taken to make sure the link stayed parallel and had the proper length.
2007 Gmc Sierra Custom Airbag Suspension Weld Mounts
The four-link mounts were welded onto the side of the frame and rear body mount.
2007 Gmc Sierra Custom Airbag Suspension Bolt Bars
On the axle, the four-link mounts were welded into place and the bars were bolted on.
2007 Gmc Sierra Custom Airbag Suspension Bag Mounts
Moving to the 'bag mounts, a level and T-square were used to keep them parallel, and a piece of steel was used for 'bag mock-up. Once happy with the positioning, Jared welded them to the C-notch and the lower 'bag mounted to the axle.
2007 Gmc Sierra Custom Airbag Suspension Weld Tabs
After finding the appropriate mounting position for the AVS Panhard bar, the tabs were welded onto the inside of the frame, and the bar was positioned into place. It was a little long and needed to be cut down to fit properly. After it was cut, the ends were welded on, and the bar was bolted into place and adjusted.
2007 Gmc Sierra Custom Airbag Suspension Trim Crossmember
The upper 'bag mount crossmember needed to be trimmed, as well. Luckily the Fullmer's had a lath that they fitted with a fish-mouth bit, then they were able to notch the tubing.
2007 Gmc Sierra Custom Airbag Suspension Weld Gussets
Jared welded the crossmember into place, then he welded in the AVS gussets to the 'bag mounts.
2007 Gmc Sierra Custom Airbag Suspension Mount Compressor Brackets
Next, Reed mounted the AVS compressor mounting brackets to the inside rear framerails and bolted down the Viair compressors.
2007 Gmc Sierra Custom Airbag Suspension Air Tanks
The 3-gallon air tanks were then bolted on and the fittings were snugged down for the compressor and air lines.
2007 Gmc Sierra Custom Airbag Suspension Controller Fittings
Here, you can see the Easy Street Auto Pilot digital controller, air fittings, valves, and two Viair 480C compressors.
2007 Gmc Sierra Custom Airbag Suspension Install Hardware
With the fittings placed into the valves, the assemblies were placed under the spare tire holder for a clean and out-of-sight installation.
2007 Gmc Sierra Custom Airbag Suspension Paint Frame
Satisfied with the placement of everything, the entire frame and components received a coat of Rust-Oleum for a finished and presentable look.
2007 Gmc Sierra Custom Airbag Suspension System Wiring
Wiring for the compressors, relays, and Easy Street Auto Pilot controller was underway.
2007 Gmc Sierra Custom Airbag Suspension Wiring Installed
Once the connectors were crimped and received heat-shrink coatings, the wires were run along the rails, up to the battery, and the one wire for the Auto Pilot ran into the cab. Check out the clean install.
2007 Gmc Sierra Custom Airbag Suspension Driveshaft Notch
After taking some measurements, the Fullmers quickly realized the driveshaft was going to hit the middle crossmember under the cab. Using 1/4-inch steel, Jared fabbed up a small C-notch, so he could cut out a small piece of the almost 2-1/2-inch-tall crossmember and replace it with this 1/4-inch-tall piece.
2007 Gmc Sierra Custom Airbag Suspension Weld Driveshaft Notch
Jared cut the 7 inches out the crossmember and welded in his new notch into place, which allowed the necessary driveshaft clearance.
2007 Gmc Sierra Custom Airbag Suspension Cut Rear Frame Notch
The same exact procedure was performed on the rear most crossmember for added driveshaft clearance.
2007 Gmc Sierra Custom Airbag Suspension Weld Rear Frame Notch
It wasn't until the test drive, when the guys found out a two-piece driveshaft would need to be built to clear the 24s and lay the body.

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