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Does this look normal - front bump stops - 05 Silverado

relentless85

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relentless85 Enthusiast

relentless85

Posted
Posted

I was changing the oil on my 05 Silverado 2WD Crew Cab last weekend and I noticed that the black rubber bump stop is really close to what looks like the lower control arm. Is this normal, or is the lower control arm too close to the bump stop? The following pics were taken with the truck on level ground. It is like this on both front lower control arms. If they are too close, what could be the problem? Front springs, front shocks or something else?

From the records I received from the previous owner, it looks like the front and rear shocks were replaced at about 93K miles with Monroe Sensa-Trac shocks. The truck now has 120K on it.

Here are pics of the front bump stops and lower control arms:

 

IMG_2594_zps64ff8b2b.jpg

 

IMG_2591_zpsbfb7518a.jpg

 

IMG_2595_zps819afa08.jpg

MikeNH Senior Enthusiast

MikeNH

Posted
Posted

I can't say for certain on 2WDs but yeah, 4WD models had them that close if not closer. They're technically not bump stops in the traditional sense; rather "jounce bumpers". Think of them as progressive bump stops (again assuming they're the same as a 4x4).

relentless85 Enthusiast

relentless85

Posted
  • Author
Posted

I can't say for certain on 2WDs but yeah, 4WD models had them that close if not closer. They're technically not bump stops in the traditional sense; rather "jounce bumpers". Think of them as progressive bump stops (again assuming they're the same as a 4x4).

 

It looks like the lower control arm would hit them all the time when I go over bumps. Should they be making contact with the lower control arm?

 

The truck does look like it sits really low, at least for a 2WD. I do not think that the suspension has been modified in any way. The RPO sticker inside the glove box says it has Z82 and Z85 for the suspension packages.

MikeNH Senior Enthusiast

MikeNH

Posted
Posted

 

It looks like the lower control arm would hit them all the time when I go over bumps. Should they be making contact with the lower control arm?

 

The truck does look like it sits really low, at least for a 2WD. I do not think that the suspension has been modified in any way. The RPO sticker inside the glove box says it has Z82 and Z85 for the suspension packages.

 

 

Yeah let me clarify my last post-

 

I was able to confirm 2WD trucks also use the "jounce bumper" like a 4x4. Instead of a normal bumpstop, the LCA is supposed to hit it as the jounce bumper acts almost like a second spring, compressing to a certain point where it can no longer yield. That point would be the bump stop.

DaveH71 Enthusiast

DaveH71

Posted
Posted

Yes those look to be the correct amount of space to me. Most trucks i see of your era have those rotted away, those are in really good condition.

  • 1 month later...
daxr Enthusiast

daxr

Posted
Posted

Perfectly normal. Where you'd worry is if the stops are smashed or cracked, which would mean they're absorbing more force than designed. On the 4wds the bumpers are usually in contacts with the stops, as delivered. A torsion bar lift (which is a common way to get a bit more clearance for decent sized tires) winds up giving it about the clearance you have right now.

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