In the same boat, mine has been sitting at dealership since 2/21 waiting on def tank. I am pissed off and feel bad for the folks that use these to make a living. Between alignment and intermediate steering shaft issue and now DEF, I am done with GM trucks and I work for GM. They choose to build at Flint instead of taking care of the existing costumers.
I am in the same boat and I work for GM. My 2020 hd denali truck has been sitting in dealership since 2/21, 3 weeks now waiting for DEF tank. I am pissed off. These are work trucks and people are loosing money when they sit like this. Is GM going to make my next payment? It bLows my mind that they are building in flint and they choose not to take care of the existing customers. I have had 4 GM trucks in last 7 years and this my last one. I also had a cruze disel that it took them 2years to sort out sw and codes. And multiple nox and heater element replacements.