Thought I would update everyone on the status of my issue- I picked up my truck earlier this week. After following the instructions laid out in this forum, the dealership offered me a price tag of $307 out the door after discussing my claim with GM. With an original quote of $1,400+ and a truck at 84k, of course, I took it and I remain a happy customer.
One thing this does tell me, if GM is willing to go this far for my truck they know it is a huge issue. For those that find themselves in a similar situation, I started my case on GM chat where the agent created a claim #. Once the dealership confirmed the condenser had to be replaced, I informed them I had done my homework on this issue and opened a claim with GM due to the large amount of trucks affected. The service agent took it from there and called me a few hours later to offer the $307.