Rear suspension hop/skip/jump on corners

[rbdjr]

2021 RST,4x4, crew,3.0L, factory tires-275/60/R20,  sits now approx 40" +- 1/4" ground to the edge of each wheel well. After a 2" Motofab upper strut spacer (approx 1.5-inch spacer), and then Installing a 1" rear leveling kit from Supreme Suspensions Pro-Billet rear lift kit 1" lift spacer and U bolts.

I'm ok with the front shocks currently 10,000 miles on the truck, but the rear suspension has not felt right from day one, around corners that road has any bumps on it truck skips /slide over bumps back end on corners? not sure if 5100 s ? would improve this handling condition, It does improve and feel fine when I put 250Lb s(bags of salt) in back of the truck all the way back by a tailgate with it closed Where is the best place to buy the 5100s? Has anyone else used these shocks to confirm the improved handling in the rear? Have been looking at the 5100?  or 5125?  Bilsteins, anyone else?

[M1ck3y]

Its all in the design, independent rear suspension is the fix. I think GM is transitioning to irs in future models. 

[EagleRising]

Eibach Stage 1, problem solved

[Gangly]

Ditch the spacers and go with the Eibach Pro Truck Lift, best handling truck I have ever owned.  For your issues, getting just the rear shocks should be fine if you don't want to commit to the front suspension.

[Gangly]

11 hours ago, M1ck3y said:

Its all in the design, independent rear suspension is the fix. I think GM is transitioning to irs in future models. 

IFS and IRS provide a much nicer handling vehicle(see the new Tahoe?), but Chevrolet, RAM, and Ford will never go to an IRS on a work truck, they simply cant handle the loads that a solid axle truck can.  RAM was a leader in the industry going to rear coils while retaining the solid axle, but their towing and payloads suffered from it, which they seem to be fine with.  Solid axle rears are by far the most capable and cost effective rear suspensions for vehicle's carrying/towing heavy loads, and that wont change anytime in the near future unless the "work" truck market goes electric.

[M1ck3y]

1 hour ago, Gangly said:

IFS and IRS provide a much nicer handling vehicle(see the new Tahoe?), but Chevrolet, RAM, and Ford will never go to an IRS on a work truck, they simply cant handle the loads that a solid axle truck can.  RAM was a leader in the industry going to rear coils while retaining the solid axle, but their towing and payloads suffered from it, which they seem to be fine with.  Solid axle rears are by far the most capable and cost effective rear suspensions for vehicle's carrying/towing heavy loads, and that wont change anytime in the near future unless the "work" truck market goes electric.

 

Exactly, electric  

 

I can't find the article now... But this journalist speculated that since everything is headed towards electric. GM will likely switch to one suspension design for ease of manufacturing, cost etc.

 

Sure there's the trade offs, but there's a lot more grocery getters then work trucks on the road. Imo if it really is for work, a base model 3/4 ton would be my choice. 

 

Edited December 16, 2021 by M1ck3y

[It's Tim]

17 hours ago, rbdjr said:

the rear suspension has not felt right from day one, around corners that road has any bumps on it truck skips /slide over bumps back end on corners? not sure if 5100 s ? would improve this handling condition

This is either God or Sir Isaac Newtons' ghost advising you to slow down. 

Not sure throwing money at the truck would actually "fix" anything.

[03blackz71]

I install bilstein 5100 shocks in the rear at 1000 miles.   Fixed that issue for me.    I had one bump on my daily drive that would kick the rear end out all the time.  Scary when it was raining doing 60 mph.  The bilsteins eliminated it.     I will eventually get the fronts.

[rbdjr]

5 hours ago, It's Tim said:

This is either God or Sir Isaac Newtons' ghost advising you to slow down. 

Not sure throwing money at the truck would actually "fix" anything.

Tell God and Sir Isaac Newton to try a 2006 4x4  GMC1500 4door truck as it did not have this problem. 

Thanks for your informative info

[Flatblack83]

These trucks bounce worse too when or if you ever change tires to lt tires.  I changed to bfg's and it was bad, I have icon dynamics rear adjustable compression shocks.  They worked for me but in your case a better shock would do,  I'd prob do rancho 9000xl tho. Then you can adjust it to what u want.