I went to Titus Will Chevy(Olympia, WA) on 10/23/20 to have my 2017 Bolt serviced. (I purchased it in 2019; has 50K miles & I drive 6K miles a year) I brought a list of items to check. However, the first thing intake person asked was for me to have the following 3 things done: Coolant Flush ($15...