Good Morning,
I have a 2019 Chevy Traverse and have not been driving much lately due to the virus situation. I'll start it and take it out from time to time just to stretch it out but I've noticed If the car sits for more then 4 days the Brake Pedal is firm and very difficult to push down to start the car. Once the car is started all back to normal. But does this sound right? The car just sits in my garage, probably 50 degree's in there. Not sure if anyone has seen this happen before?

 

hard to say; the vacuum booster may be leaking. Have the dealer compare it to a similar model. If the other vehicle does it also, it may be a normal condition.

 

Mine does that too. I think it's normal. I also had a 1500 that did it also.