Since you asked for thoughts:
Leave the suspension alone and do not modify it. GM engineers spend countless hours designing a vehicle’s suspension to handle and ride well.
Modifying the suspension can affect the vehicle’s ride and handling, the ABS system, the stability control system, and the automatic emergency braking.
What benefit will you gain by modifying and raising the vehicle?
I would agree—to a point. The engineers may design the suspension one way, then buracracy, committees, and lawyers take over. Bumper and headlight laws regulate what they can do. Look at when the new Tahoe was first introduced. I watched that video a bunch when deciding on a new tahoe. If you look when they drive the new Z71 on stage—that vehicle is lifted (what appears to be) 2” over stock. It does not sit like the other Tahoe and Suburban.
Also, if you work on these you can tell where the engineers intended the vehicle to sit by looking at suspension geometries, brake and abs hose lengths, sway bar parallelism with the ground, etc. Crawl underneath and study them closely.
I am not advocating for 6” lifts of anything like that. I am just pointing out that engineers and stylists can design it one way, then legal and committees take over and blow up the design.
I have my Tahoe lifted about 2” with Edgy Mods links and larger tires for about 70k miles now and have not had any issues or problems.
And the benfit? Individualism, my art project with larger tires. It looks way better. You don’t have to like everyone’s art project, but that is what makes it unique.
