Pmcb
Junior Member
- Joined
- Nov 24, 2023
- Posts
- 27
- Reaction score
- 30
- Location
- Spearfish SD
- First Name
- Pat
- Truck Year
- 1987
- Truck Model
- GMC Sierra Classic 1500
- Engine Size
- 5.7
I will look into the knock sensor, maybe i can change that first while trying to get O2 sensor off .