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2000 GMC Savana Rear lug bolts sheared

Tiny
PARAMOUNTCLAIMS
  • MEMBER
  • 2000 GMC SAVANA
  • V8
We had the vehicle serviced and then both right rear wheels came off. We then found that all the lug bolts were sheared off but there was a 1/4" gap between the hub and the drum. We are trying to find out if the lug bolts were not pressed in all the way initially causing the lug nuts to not fully engage the threads on the lug bolts.
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Wednesday, October 22nd, 2014 AT 9:02 AM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
If there was a gap, either the wheel was not properly positioned or the lugs were not properly torqued.
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Wednesday, October 22nd, 2014 AT 9:21 AM
Tiny
PARAMOUNTCLAIMS
  • MEMBER
  • 3 POSTS
The gap is between the hub simulator and drum. Do the lug studs not need pressed into both? Just trying to figure out why there is a gap between these components.
We had them replace the lud studs recently but the wheels did not fall off until a recent tire change.
Shop that replaced lug studs is blaming shop that replaced tires and vice versa.
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Wednesday, October 22nd, 2014 AT 9:23 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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From what I see, the studs are not fully seated. Most likely, that allowed them to flex and break.
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Wednesday, October 22nd, 2014 AT 5:21 PM
Tiny
PARAMOUNTCLAIMS
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  • 3 POSTS
Thanks for the input. Do you know why they would not be fully seated? Would this be from the stud R/R or wheel R/I?
The wheel studs were replaced and a couple months later the tires, then the wheels fell off a couple weeks later. Trying to figure out what caused this.
Thank you
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Wednesday, October 22nd, 2014 AT 6:01 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Without being there, that is a tough call. I would think that the problem would have happened shortly after the studs were replaced. However, that isn't the case. The bottom line, from what I see, the studs were not full seated when they were installed. Please understand I am looking at a picture and not actually there.
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Thursday, October 23rd, 2014 AT 8:46 AM

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