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2014 SILVERADO TICKING / CLICKING NOISE

DROSS73

By DROSS73
in Troubleshooting & Recalls

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JimCost2014 Senior Enthusiast

JimCost2014

Posted
Posted
On 1/17/2021 at 9:56 AM, Ga-Raised said:

They owners manual says not to run premium in 5.7 only run it in the 6.2. Will it do harm to run one tank of premium in my 5.7?

Welcome to the site.

 

It does not say not to use premium with the 5.3, just not required, so you can run it and not hurt your engine.

 

If the vehicle has a yellow fuel cap, E85 or FlexFuel can be used in the vehicle. See E85 or FlexFuel 0 324. For all vehicles except those with the 6.2L V8 engine, use regular unleaded gasoline meeting ASTM specification D4814 with a posted octane rating of 87 or higher. Do not use gasoline with an octane rating below 87, as it may cause engine damage and will lower fuel economy. If the vehicle has the 6.2L V8 engine (VIN Code J), use premium unleaded gasoline meeting ASTM specification D4814 with a posted octane rating of 91 or higher. Regular unleaded gasoline rated at 87 octane or higher can be used, but acceleration and fuel economy will be reduced, and an audible knocking noise may be heard. If this occurs, use a gasoline rated at 91 octane or higher as soon as possible. Otherwise, the engine could be damaged. If heavy knocking is heard when using gasoline with a 91 octane rating or higher, the engine needs service.

 

 

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Harleyjohn54
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I think you might have this one wrong. My Sierra is at the dealer right now and one of the techs told me that there is a pressure valve that somehow runs the vapors from the fuel tank and unused fule

towdog333
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Grandmainatruck
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I’m so relieved to read that this ticking is normal!I never even noticed it on my 2014 GMC Sierra really until some of the men I work with pointed it out. I told them it had always sounded like that a

Grandmainatruck New Member

Grandmainatruck

Posted
Posted

I’m so relieved to read that this ticking is normal!I never even noticed it on my 2014 GMC Sierra really until some of the men I work with pointed it out. I told them it had always sounded like that and they acted like I was stupid. Side note: they drive 4 cylinder Mustangs and Hyundais. So there’s that.

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