2011 Chevy Silverado 1500 Rough Start

batman06 · March 9, 2014

So u got it fixed

Gone Again · March 9, 2014

Batman

If you're asking me-yes, mine is fixed.

batman06 · March 9, 2014

Gone again. How did u fixed urs?

batman06 · March 9, 2014

Gone Again

What was wrong?

Was it under warranty?

When I start it up leaves a strong smell of fuel out of the muffler.

Gone Again · March 10, 2014

Batman

Go back and read post #29.

batman06 · March 10, 2014

Okay so you took it too a dealer ship? Or just a mechanic? How much it cost you?

mike94silverado · March 10, 2014

So on my edge insight it shows 28% for ethanol... Maybe I'll point the dealer in this direction

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batman06 · March 10, 2014

Gone Again.

How long did that take? Just a couple of hours?

Gone Again · March 10, 2014

Batman

I found the ethanol content with my scan tool-I'm a tech with my own shop but could not do the reprogram myself. Took it in and they kept it overnight to make sure it was OK the next morning. My truck is a 2010 with 22K miles-out of bumper to bumper but dealer thought powertrain warranty might cover it. Have not heard from them yet.

bassmaster · March 11, 2014

Let us know what they tell you. I've still been having trouble with mine.

batman06 · March 11, 2014

Gone again

Okay see if I find someone that can reprogram

UCABlackChevy · March 17, 2014

I totally feel the same way. I have tried near about everything. The trouble was that no one knew what it was, not even the dealership. It was because there were no trouble codes to lead them to something. The last thing that I have done seems to have fixed the problem. I took someones advice and ran the tank really low, and filled it up with ethanol free gas. I did this because the these trucks don't have an ethanol sensor because it costs too much according to GM so they designed them to do some type of algorithm calculation when the tank detects that it has had fuel added to it. During these first miles upon refueling it calculates the correct alcohol to ethanol ratio for the fuel, and if you read your owners manual somewhere it says this refueling process. The problem is that the fuel trim values are incorrect because it missed the calculation one time causing it to miss-calculate it every time after that. The reason for it miss-calculating is that you are supposed to run the truck for at least 7 miles or like 20 minutes before you switch it off. This gives it time to calculate it. The reason I went ethanol free was to totally eliminate the cause of the incorrect fuel mixture ratio by thinking there is ethanol. It says this is only necessary when switching from e85 to regular but I have never ran e85 in it. So when the engine is cold, it reads the fuel trims. That wrong fuel trim causes it to misfire like and do what it does. I will probably run another tank of ethanol free gas and the procedure just to be safe but I think I have fixed it and maybe this will help you.

I gotta say I was skeptical that this would work, but it absolutely worked.

Filled up with ethanlol free gas yesterday afternoon, cranked this morning without a hitch and just cranked up on my way home today without a hitch. Crazy!

batman06 · March 22, 2014

Filled up with what?

batman06 · March 26, 2014

Uca black chevy

JUST A FILLED UP FIX UR PROBLEM

UCABlackChevy · May 6, 2014

Uca black chevy

JUST A FILLED UP FIX UR PROBLEM

Yes, I drove it until it was almost empty, filled up with ethanol free gas (www.pure-gas.org to find a ethanol free station), drove around for 10 minutes, and then test it out 8 or so hours later to see if it works.