Chevy & GMC Vans

Hi everyone. I'm not sure this is the right place to post, so if it should go somewhere else please let me know. I installed 4 ProComp 3000 Shocks and a 2" lift kit after much research. I love the height and look with my new rims and tires. The problem? The van rattles my teeth going down the road. My wife won't even drive in it after one ride. Although I will use the van for light camping, the reality is that it's a daily driver, and although I love the off road look, I need a smoother ride. Does anyone have a recommendation for a good pair of shocks for smooth road driving?

If it matters...
Tires: LT235/70R-16 BFGOODRICH ALL-TERRAIN T/A KO2 C
Rims: AR 767 steel rims

Thanks in advance!

What's your tire pressure?

What did your 2” lift consist of? Can I assume that the ride was fine prior? Does it feel that the front or rear is stiffer?

Just trying to narrow down the cause.

Ryan

Wood, I can't remember what my tire pressure is right now, but I lowered it significantly. Is there a recommended tire pressure? There just seems to be no give in the suspension. My mechanic said it was the shocks. I'm not a mechanic, so all I can do is take his opinion. I don't mind replacing the shocks. Just need a good recommendation. Thanks!

Snowgeek wrote:What did your 2” lift consist of? Can I assume that the ride was fine prior? Does it feel that the front or rear is stiffer?

Just trying to narrow down the cause.

Ryan

Hey Ryan, thanks for the reply. I just got the overland vans 2" lift. Yes, it rode nicely before. I had the lift kit and shocks installed at the same time, so I can't say for sure that it would be the lift kit or the shocks that make it drive like something who's sole purpose is to rattle my fillings out, but I can only assume it's the shocks. My wife won't even drive in it. I just sold my 2001 (old style) Jeep Cherokee and that was a Cadillac comparatively, just to give you a reference. Looking forward to heading your thoughts. --Tad

Hi,

Sounds like shocks and air pressure in tires. I run 32 psi in LT 225/70-16 BFG KO tires which have the 3 ply side wall which makes them on the firm side.
Was the front end lifted by cranking the torsion bars, or inserting the 6 plastic 2" body lift pucks and longer bolts?

You should see the body lift pucks under the sub frame?

Also, make sure they did not install the hard polyurethane bushings for sway bars, etc.

AP

Hey Ryan, thanks for the reply. I just got the overland vans 2" lift. Yes, it rode nicely before. I had the lift kit and shocks installed at the same time, so I can't say for sure that it would be the lift kit or the shocks that make it drive like something who's sole purpose is to rattle my fillings out, but I can only assume it's the shocks. My wife won't even drive in it. I just sold my 2001 (old style) Jeep Cherokee and that was a Cadillac comparatively, just to give you a reference. Looking forward to heading your thoughts. --Tad

Ok here is my two cents, the lift kit you installed does not affect the springs in any real way. The body pucks don’t affect the torsion bars and the shackles don’t change much either. If the lift didn’t affect it and the ride was good to begin with then it is almost definitely the shocks. That lift kit says it works with stock shocks so you could just slip the old shocks on to test before spending any money. I have been happy enough with the rancho 5000 that overland sold me..... based on Stroverlanders experience I am swapping to Rancho 9000 this week after 5 years with the 5000.

Hope this helps,

Ryan

Another thing to check is for proper torque on the leaf spring bolts, and that they were torqued with the weight of the van on the wheels, on level ground.

Some people forget this and will torque the shackle-bolts to spec while the van is up on stands. When the van is lowered onto the springs, this torque can be enough to sort of pre-load the springs in that "drooped" position which can hurt ride quality. I have a fairly sloped driveway, on a sloped street, so while I can do some amount of suspension work there, I always have to drive over to the local high-school a block over and use their parking lot to loosen and re-torque all my suspension mounting bolts.

Hi,

I put Bilstein shocks on front of my 2003 AWD. They are very comfortable.

Also, I replaced rear Monroe air shocks , with Monroe cargo coil shocks which are nice ride.

AP