hello everyone I'm a Newbie here I own 2018 GMC Sierra elevation 5.3litre 6spd automatic I have 70,000km on it I get pinging/detonation at highway speed when trying to accel faster. I am using Costco 87 octane is that my problem no check engine light I've tried octane booster(lucas) and it's still there any suggestions please
northerngmc