Jump to content

upper control arms sitting on bump sto.

Trey Robertson

By Trey Robertson
in Ask A GM Technician

Recommended Posts

Trey Robertson Enthusiast

Trey Robertson

Posted
Posted

Okay so my 05 GMC Sierra 1500 Z71 with 260xxx miles. The truck rides pretty ruff and I was wondering if it's okay for the top control arm to sit on the bump stop. Only the driver side is touching But the truck is even side to side.

kstruckcountry Senior Enthusiast

kstruckcountry

Posted
Posted

Looks like you found a better section, I cleared the thread from off topic. Do you have any pictures? Upper control arm shouldn't be touching anything.

Trey Robertson Enthusiast

Trey Robertson

Posted
  • Author
Posted

Looks like you found a better section, I cleared the thread from off topic. Do you have any pictures? Upper control arm shouldn't be touching anything.

 

I posted it on my profile

gmtech4 Senior Enthusiast

gmtech4

Posted
Posted

Okay so my 05 GMC Sierra 1500 Z71 with 260xxx miles. The truck rides pretty ruff and I was wondering if it's okay for the top control arm to sit on the bump stop. Only the driver side is touching But the truck is even side to side.

I agree , the LCA is the component that hits the jounce bumpers ( proper term )

 

That adjustment is called the "Z" height adjustment , that is done first and then an alignment is done

 

No you can't do it , an alignment tech does this entire job

 

It doesn't matter if the truck is level now , it's worth getting it looked at

gmtech4 Senior Enthusiast

gmtech4

Posted
Posted

So I need to go get an aliment and it will be fine or what ?

You have to tell them to do a "Z" height adjustment first ... Then an alignment HAS to be done

 

If they say " what's a Z height adjustment "? Just turn around and leave

newdude Senior Enthusiast

newdude

Posted
Posted

Saw your control arms in your gallery. Thats sitting on the ground? Pretty rough lol.

 

Govtech pretty much nailed it on the Z height measurement followed by an alignment. UCA should be off the bump stop for sure. Is the truck leveled?

Trey Robertson Enthusiast

Trey Robertson

Posted
  • Author
Posted

I put the leveling torsion keys in and brought the front up an inch higher than the Back. It is a rough ride. I could lower the torsion keys but I wanted to go higher. There's still about an inch left of turning them up.

Saw your control arms in your gallery. Thats sitting on the ground? Pretty rough lol.

 

Govtech pretty much nailed it on the Z height measurement followed by an alignment. UCA should be off the bump stop for sure. Is the truck leveled?

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • KARNUT
      Oil Consumption

      By KARNUT · Posted

      No I didn’t watch a video of a person who analyzes oil for a living explain general oil usage. For clarity I did ask my brothers one who runs our equipment business. The other who runs our old ROW business about oil usage. Nothing has changed since I retired. Their personal vehicles or work vehicles use no oil. Not enough to see on the oil checking device. Then I pondered. I like to ponder. In this extended oil changing world with oil change countdowns or lights. If engines used say a qt every 2500 miles or up to even 4000 miles. With oil changes reaching as high as 15000 miles. Normal for most people is eight to ten. Vehicles should potentially be seizing up all over the place. Especially in hilly terrain. Just how many people actually check their oil? Maybe 10 percent. Those are the people that probably change their oil early. I like to research used car listings. I have five favorite dealers I check. They all list carfax with their listing. It’s rare to see vehicles with anything but extended oil changes. Transmission service, forget about it. I’ve seen Honda and Toyota certified vehicles up to 100K miles and ten years old. With nothing but normal maintenance. Isn’t nice we all have different experiences and believe our way is the best. You certainly get backup for whatever you believe. Life would be boring otherwise.
    • RobbertClaus
      RUMOR / INSIDER: 2027 Silverado Dealer Reveal NEXT WEEK

      By RobbertClaus · Posted

      Interesting rumor. Dealers near me have been tight-lipped so far, but if this reveal actually happens next week, I'm really hoping they finally give the HD a proper interior overhaul. The competition has been eating their lunch in the cabin department for a while now.
    • Chuck FB
      Oil Consumption

      By Chuck FB · Posted

      There are a few good takeaways in that video that pertain to this thread, certainly the possibility of the oil control rings having buildup, the fuel injectors and how clean or not that they are ending up affecting the pistons rings carbon buildup, and the fact that its normal up to a point for a given engine to use some oil, and that the oil quality that is being utilized is part of that ring clogging up issue as well.   I was talking with a neighbor yesterday who has a baby LZ0 duramax and he had bought it slightly used but it does consume some oil and he has switched over to 5W-30 Euro spec oil and in this case that never made a difference in consumption over the factory 0W-20 recommendation. He finds it uses a quart in about 3500 miles and as he goes a ways over that distance he adds oil to full and goes another 1000 miles or so and then changes oil and is typically at 40% or so left on the oil monitor at that point with his use case of quite a lot of highway miles and more limited in short run use. I don't know what other LZ0 engines are doing for oil consumption but that is what his is doing. 
    • riddler
      Oil Consumption

      By riddler · Posted

      I dont care what Lake says. Goodnight. 
    • Atlas
      Oil Consumption

      By Atlas · Posted

      Ok well I guess Lake disagrees with me on a few points. I call oil consumption pretty basic. Rudimentary. He calls it "really complicated." I think 1qt consumed in 3k miles is a lot. He says that's normal. In 22 minutes, he'll use his natural talent to explain oil consumption to anyone watching this video. He covers everything from obvious engine damage to how normally functioning healthy engines consume oil by design. Lake explicitly states how you drive will impact oil consumption.   Shut up and watch:    

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...