is it safe?

When i was selling parts at GM dealers, we would search other local dealers in the attempt to find one. There is the possibility that this part is being superceded to a upgraded part and on occasion that can lead to a healthy delay. I once needed a flywheel for a warranty job and they would only pay for the "new" number. Had the first # on the shelf, but it was a no go to GM and the truck sat for 3 1/2 weeks. :violent1:. These things just happen sometimes.