Hey everyone I have once again ran into another issue . So the other day I was driving my Hummer and all of a sudden I would get power loose it and get it back ect until I came to a stop then it would act normal I also got the following codes. P069E, P2635, P0171. I'm at a loss rn it's only done it 3 times so far I did fuel it up at a gas station previous to this. Might also be water in my fuel idk I'm just at a lost. I cleaned the maf sensor no change and I have a brand new throttle body still in the box of it needs it . Thank u

 

Bad fuel pump?

I think one can somewhere.

Sunroof? If so, carpets ever get wet from a leak?

How are your battery terminals? If stock, get new ones or get good aftermarket ones (e.g. Stinger).

 

Fuel pump or the associated wiring. Many have reported rusted tops of their fuel sending units too.

 

Ok thanks I'll try replacing the battery connectors and some seafoam see what happens. if it continues I'll change the fuel pump. Thanks again

 

You may have a bad BCM too from sunroof drain leakage.