Crew cab 2nd row bounce

[needlenose]

Has anyone done anything to eliminate this? Anyone riding in the back seat of my truck is constantly bouncing even though the truck doesn't seem to be doing much itself. I'm assuming it's the frame flex given the CC's length? My dad had a 95 CC for about 10 years and it did the exact same thing. Today I looked back and my 7 year old was bouncing about 2" continuously. He loves it, but no one else does.

 

[79jasper]

Lol.
I've never noticed that.
I've felt some newer fords feel like that from the front seat going down the highway.
Srw or drw?
Both normal truck beds?


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[6.9poweredscout]

Never had that issue, nor has anyone complained. The only time there was any rear seat bouncing....I was parked.

 

[Zaggnutt]

Mine does it too. Luckily, my kids are the only ones ever sitting back there and they think it's a blast. Seems more noticeable since replacing broken leaf springs with new HD spring packs. Rides like a forklift unless it's carrying 500lbs or so.

 

[needlenose]

Lol.
I've never noticed that.
I've felt some newer fords feel like that from the front seat going down the highway.
Srw or drw?
Both normal truck beds?

Yep, both trucks were SRW long beds. Mine is a 2WD 1T, his was 4WD 3/4T; both trucks ride the same. The front seat feels fine, it's only when riding in the back seat. My dad actually had friends tell him after a road trip that they would never ride with him again. I have a two year old and I'm not looking forward to cleaning up the *******/raisin paste spewed all over the back of the front seat on a 2.5 hour drive. Little sister can spew like nobody's business.

I've seen these bars on 4X4s that go from the rear axle to somewhere on the middle of the frame. I wonder if the triangulation would help dampen some of the flex.

 

[79jasper]

Very strange.
Those bars are traction bars.
You could plate the frame, but I don't know how much the bars would help.


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[snicklas]

What kind of shocks do you have? How old are they?

I wonder if they may be part of the ride? I changed out my shocks after clipping one of the craters in the road in downtown Indy and broke a shock. Mine were factory shocks with about 120,000 miles. I swapped them for a set of Bilstein 4600 Shocks. They greatly improved the ride and handling. Bilstein are not cheap, but worth every penny in my opinion.

 

[93blklightning]

I don't have that issue with mine. Of coarse mine is a ecsb on a rclb frame. I added a cross member to mount the rear of the extended cab. I also have a extra leaf upfront, but with factory shocks. What might help is the fact I've got 285/75/16 tires, the larger the tire, the smoother the ride, or at least I've always found

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[mohavewolfpup]

Lol.
I've never noticed that.
I've felt some newer fords feel like that from the front seat going down the highway.
Srw or drw?
Both normal truck beds?


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A 07 toyota tacoma does it also in the front seat

 

[needlenose]

Very strange.
Those bars are traction bars.
You could plate the frame, but I don't know how much the bars would help

Yep, I thought of plating or boxing the frame, but that's a LOT of work. I figured that traction bars would either keep the rear axle from twisting, or keep the chassis from bowing up under torque.

 

[Zaggnutt]

What kind of shocks do you have? How old are they?

I wonder if they may be part of the ride? I changed out my shocks after clipping one of the craters in the road in downtown Indy and broke a shock. Mine were factory shocks with about 120,000 miles. I swapped them for a set of Bilstein 4600 Shocks. They greatly improved the ride and handling. Bilstein are not cheap, but worth every penny in my opinion.

I definitely don't have Bilstein's, but mine are brand new. The E rated tires probably aren't helping... Might as well be made out of wood

 

[needlenose]

What kind of shocks do you have? How old are they?

I wonder if they may be part of the ride? I changed out my shocks after clipping one of the craters in the road in downtown Indy and broke a shock. Mine were factory shocks with about 120,000 miles. I swapped them for a set of Bilstein 4600 Shocks. They greatly improved the ride and handling. Bilstein are not cheap, but worth every penny in my opinion.

I will have to look. The truck itself doesn't bounce much at all. In fact, the back seat isn't really affected much by potholes. It's more the little gentle swells and irregularities in the road that produce the most bounce in the center of the truck. It's almost like the the stiffness of the suspension produces some chassis flex in the center of the truck. I'm kind of surprised that others aren't experiencing this as well. Both my dad and I thought it was something inherent to the CC.

Yeah, I know all about Bilstein products. I would love to have a set on all my vehicles. But that's a clover field I probably won't ever get to roll in.

 

[reklund]

It's called frame beaming by the GM guys, and is more or less a characteristic of the vehicle. It's probably worse on concrete expansion-joint type pavement than it is on good smooth asphalt too. Best thing to do is to make sure the tires are balanced properly and set to the proper pressure (no need for 80 psi in E load tires if you're running around unloaded), shocks are in good working order, and if you're going on a long trip, put some weight in the bed. usually luggage and crap is sufficient, but some guys put a piece of steel plate (doesn't take up much space) or a few bags of sand in the back between the tailgate and the wheel wells.

 

[SLC97SR5]

My truck did the exact same thing until I swapped in some Bilsteins. I tried 2 other types of shocks and neither helped.

Long trips with the gooseneck were fine but around town or down the freeway unloaded was a jittery, unsettled mess.

My 2 little kids loved it and it would often rattle them to sleep.

I keep my load E's around 55-60 psi unloaded.

Shockwarehouse.com has free shipping and the best prices I've found.

 

[NO_SPRK]

My 100lbs rottweiler doesn't bouce around.. check your rear shocks or put a load in your bed

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