jerryhipp
TYF Newbie
- Joined
- Nov 29, 2019
- Posts
- 16
- Reaction score
- 4
my wife fueled today. 87 octane and 5 minutes later the truck starts knocking, hesitating and threw a p0324 code. it is a 15 yukon denali 6.2l with 96,000mi. i know we are supposed to use higher octane. but we've always ran 87 octane and never had a problem. i was thinking it is just bad gas. and i threw a bottle of octane booster and gas line antifreeze in the tank. any opinions would be appreciated.