After dropping my vehicle off for ignition issues, I researched in my records and found we had never replaced spark plugs. I asked the technician how the plugs looked and their response was "they look like new, I would not recommend to replace them."
I paid for them to diagnose the issue. They quoted 2 things that even the manufacturer agrees was not needed,
I went home, pulled the plugs and found them to be in horrible condition. After replacing them myself, the $1,900 repair estimate turned into a $60 resolution. Everything was fixed, the check engine light turned off, and now I do not trust these guys. For the note, it has been over a month and the engine has not ran rough even once since, which was regularly occurring when it was taken into the shop.
I even reached out to the GM to give him the opportunity to make it right for us, I even dropped off the spark plugs, and haven't had any communication since, despite a couple professional follow-up messages. Very sad as I once thought highly of their service, but the real test is always when there is a problem and in how they take that opportunity to recover from the situation. There was no recovery attempt with me and as such I will not return and take the risk of another poor service opportunity and a potential rip-off attempt.