Rattling/clicking noise when gassing/accelerating

[Jonty711]

 

 

[M1ck3y]

5 hours ago, Truckboy said:

Can a 2017 Silverado flex fuel take 94 octane? 

Which engine do you have? On the 6.2 Gm recommends 93 octane.

[Truckboy]

19 hours ago, M1ck3y said:

Which engine do you have? On the 6.2 Gm recommends 93 octane.

I have the 5.3L

[JimCost2014]

7 minutes ago, Truckboy said:

I have the 5.3L

Pretty sure the engine is tuned from the factory for 87, but you can use the higher octane if you like, the engine will adjust to what is put in it.

 

I would not expect "big" horsepower gains, maybe a little better MPG, and a little cleaner innards if it is a top tier fuel. 

Edited July 19, 2020 by JimCost2014

[Truckboy]

2 minutes ago, JimCost2014 said:

Pretty sure the engine is tuned from the factory for 87, but you can use the higher octane if you like, the engine will adjust to what is put in it.

 

I would not expect "big" horsepower gains, maybe a little better MPG, and a little cleaner innards if it is a top tier fuel. 

Ok thanks for the info. 
 

Just another quick question, I feel like my truck does not have the “V8” torque like it should. It lags and sometimes delay acceleration. I test drove another Silverado with 5.3L V8 and it was super strong with torque. Could I have a leak somewhere or clogged/blockage somewhere? Or is it just the lag of the AFM? 

[M1ck3y]

Its really hard to say if your issues are normal or not, best to take it in have someone look at it.