"Clunk" in chassis = Torsion bar X-member hitting

duglasfur · Post by **duglasfur** » Thu Jun 17, 2004 4:35 am

Hey, I have a problem. My torsion bar crossmember is hitting the frame at low speed maneuvering (ie parking lots) and sounds like a real loud popping/clunk under the front seats. At first I thought it was a CV joint, but kept getting louder. Mr.G supposedly fixed it (3 times now) by replacing the torsion bar crossmember mounts, bushings and shimming both of those mounts about 1cm more towards the center of the truck. All to no avail. Charged me $300! So I called GM "customer service" and Mr.G says "contact of no concern". That was not good enough for me and I was awaiting an "engineer" from Chevy to contact me, b/c my CrewCab is only 4K miles out of friggin' warranty, never wrecked and never offroad! Well yesterday, they closed my case "dissatisfied"! I did crank in the torsion bar adjusters to see if the added tension would help keep the member more stable in the middle of travel and it helped a little. Please let me know if anyone can help fix it!

Post by **HenryJ** » Thu Jun 17, 2004 4:45 am

Make sure that the torsion bar sockets are well lubed. That helps to allow them to slide instead of pushing the crossmember side to side.

Retep · Post by **Retep** » Thu Jun 17, 2004 8:21 am

HenryJ wrote:Make sure that the torsion bar sockets are well lubed. That helps to allow them to slide instead of pushing the crossmember side to side.

Torsion bar sockets??? What are you referring to? I have this problem at times, but only in the cold of winter.

Pete

Post by **HenryJ** » Thu Jun 17, 2004 10:09 am

Retep wrote:...Torsion bar sockets??? What are you referring to?...

The point that the torsion bar enters the a-arm on one end and the point where it enters the adjuster ("pork-chop") on the other end.

You can use Miracle-lube, sprayable white grease, or Fluid film. Same stuff works well for door hinges.

Retep · Post by **Retep** » Thu Jun 17, 2004 10:38 am

HenryJ wrote:
Retep wrote:...Torsion bar sockets??? What are you referring to?...
The point that the torsion bar enters the a-arm on one end and the point where it enters the adjuster ("pork-chop") on the other end.

You can use Miracle-lube, sprayable white grease, or Fluid film. Same stuff works well for door hinges.

Hmm... I always thought those were suppose to be a tight fit. almost a press fit. I will have to look next time I am under the truck.

Pete

Post by **HenryJ** » Thu Jun 17, 2004 11:12 am

Retep wrote:Hmm... I always thought those were suppose to be a tight fit. almost a press fit. ...

Chevrolet is having a hard time getting it right. On the fullsize they are almost so loose they could rotate with a little wear. On ours they are so tight that they tend to seize