Techs were completely honest about the problem with my truck and the needed repair and cause. I had the repair done elsewhere, though still through GMC, because they paid 2/3 of the repair costs. Kinda like admitting that they screwed up. With out the honesty of the team at Lynch, I would have been stuck with the whole $1800 for a new catalytic converter.
Thank you for the feedback, Ken! We are always more than happy to assist you if anything else comes up. Take care!