There should be state sticker along the inner door on the drivers side that tells where it was produced. By the sound of the problems you are having, I'm guessing it was produced in Arlington, Texas. (I hope anyways)
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So you consider the Tahoe a really crappy vehicle?
That's too bad because we here at Janesville Assembly really do strive to produce a high quality vehicle. But as you stated, the engineering is something we have to work on, but the assemblers put it all together the best they can. We do often complain about the engineering and GM pays us for suggestions on how to produce a better vehicle. The assembler obviously runs into problems that an engineer never imagined would happen. We try to correct those problems.
I hope your problems are addressed properly and if not, let me know, there might be someone I can talk with to assist you.
BTW - I recently did a comparison on trucks with a Silverado and a Ford F-150. After a spec and drive study on each vehicle, I actually preferred the Ford. The Ford was much quieter and smoother, had better fit and finish on all moving parts, but I found the Chevy more powerful and snappier. The Ford interior is more user friendly, and more comfortable, especially on long trips.