Truck bounces badly after replacing suspension parts

Tiny
GRIZZLY84
  • MEMBER
  • 2000 CHEVROLET 1500
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 212,000 MILES
I just replaced both lower control arms, sway bar links, and passenger CV axle. Now my truck bounces dangerously while driving.
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Tuesday, September 10th, 2019 AT 3:52 PM

6 Replies

Tiny
DANNY L
  • EXPERT
Hello, I'm Danny.

Just a quick question first. Did you mark the torsion bars for correct re-installation?
Torsion bars are marked front-to back, side-to side, directional. That makes a difference and makes sense of your symptom. Let me know. Hope this helps and thanks for using 2CarPros.

Danny-
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Tuesday, September 10th, 2019 AT 4:42 PM
Tiny
GRIZZLY84
  • MEMBER
My torsion bar set bolts are marked with using 4 washers as spacers, but it was a pain in the neck trying to connect the lower control arm to torsion bar while trying to achieve perfect alignment. The torsion bar kept wanting to twist making the key bottom out as if they were turned all the way up. Could that be my problem? Having to much tension on that side?
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Tuesday, September 10th, 2019 AT 4:57 PM
Tiny
GRIZZLY84
  • MEMBER
I literally had to do some sketchy stuff to get the key where it needed to be. Visually
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Tuesday, September 10th, 2019 AT 4:58 PM
Tiny
DANNY L
  • EXPERT
Hello again.

Did you install the torsion bars correctly? If you look at the hex end on the face there is a directional stamp telling you direction and placement. It has a directional arrow showing which direction (side) to be installed. Also, Did you use a torsion bar clamp? It makes things easy. Your local auto parts stores might be able to rent you one through the tool loaner program. Picture attached below. Hope this helps and feel free to ask any questions if needed for this problem.I can get you through this as I personally owned a 1997 K1500 and now also an 1989 K1500. Thanks again for using 2CarPros.

Danny-
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Wednesday, September 11th, 2019 AT 4:08 PM
Tiny
GRIZZLY84
  • MEMBER
I didnt completely remove the torsion bars if that helps. I just loosened them pulled the control arm off and slid the new one back on. Is there a certain rotation or certain mark that lines it up?
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Wednesday, September 11th, 2019 AT 4:14 PM
Tiny
KASEKENNY1
  • EXPERT
Hi,

If I can jump in here, I think the point Danny is making is if your truck is bouncing after this then clearly the torsion bar is the likely issue. If you didn't completely remove them which means you didn't use the tool that he pictured to relieve the tension from the adjuster and then remove the adjuster, I suspect you did not get the proper amount of torsion back on the bar to prevent it from bouncing or at least you don't have even tension.

When replacing the lower arms you need to remove the torsion bars using that tool so that you are loading and unloading them properly. I suspect you are going to have to completely remove them and then add the tension back on properly. I have never heard of someone removing some of the tension and then trying to get the control arm out. The bar needs to be completely relieved and then reloaded.
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Sunday, September 15th, 2019 AT 11:59 AM

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