Hi I知 active duty military in heading to Germany and was wondering if if I知 using the right fuel for my 2017 Chevy Silverado. I知 currently using the premium fuel but having a check engine light on saying fuel to rich. Any suggestions?

 

trucks take regular grade fuel.
"rich" mixture has nothing to do with the grade of fuel. It means there's a problem with the engine, and the fuel to air proportion is too high. Make sure you have a clean air filter and take it to a mechanic.

 

yea, checking the code it was for the O2 sensor on bank 1 sensor 1. They replaced the o2 sensor and it痴 still coming back reading that the fuel is to rich still so I値l have a look at the air filter to see.

 

Post the codes please

 

the code is P0172.

 

Follow the troubleshooting here:
https://www.obd-codes.com/p0172

 

The mass air flow sensor was clean, no oil buildup or anything on it so it can稚 be that.