As the title says, I have a 2020 with 36k miles. Last month, I heard a slight knocking/tapping sound under acceleration. (usually, between 1200-1800 rpm or up to approx 30mph.) It was due for an oil change, so I made an appointment with the dealer. They investigated, and long story short, they...
We have 2018 still in 36K/3 yr warranty period and want to buy an extended warranty—the platinum
any suggestions for best dealer/best price
we don’t want a 3rd party vendor—just GMC coverage
appreciate info from anyone who waited to buy after initial purchase