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2011 5.3l Rough Idle

travis73

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travis73 Enthusiast

travis73

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Posted

Hi everyone,I just bought a new Sierra 3 mths ago and I have noticed a rough idle when stopped at traffic lights or just sitting idling.Is this something normal for the 5.3 or should I be taking the truck back to the dealer?has anyone else had this problem,is there a cure,and what is the cause of this?any input on this would be appreciated.

AlaskanSilverado07 Enthusiast

AlaskanSilverado07

Posted
Posted

Remember, these engines have a slight stumble to them from time to time and you'll notice it when sitting at a light. Do a search and you'll see this has been discussed in the past. I've had it with every GM I've owned fromt he 8.1 to 6.0 to my current 5.3. They all do it ever so slightly...a characteristic of the engine.

travis73 Enthusiast

travis73

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Thanks for your input,I guess it does only do it some of the time,I had a 4.8l before I bought this one and it was smooth as glass so it kind of took me by surprise when this one did it.I did call the dealer today and they told me the same thing,"that it was a normal for this engine so I guess I will just ignore the problem.Thanks again everyone.

dewfpo Senior Enthusiast

dewfpo

Posted
Posted

My brother-in-law bought a new Silverado 5.3L engine about 6 months ago and it too has a very "shaky" idle in neutral and in drive.

 

DEWFPO

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