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2015 Silverado

Old July 7th, 2019, 2:24 PM
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Default 2015 Silverado

I have a 2015 Silverado when i start truck makes a sound like it has an exhaust leak. Took it. In for that was told it had no exhaust leak. Only make sound when i start truck then goes away. Anyone have any idea why this is happening. Truck runs fine just make noise when starting.

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Old July 12th, 2019, 11:18 AM
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could be a leak that only happens when the pipes are cold then once it warms up the metal expands and seals the leak. with the engine cold i would try to feel around the exhaust to see if i could feel and air being pushed out
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Old July 12th, 2019, 11:22 AM
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Originally Posted by Irish_alley View Post
could be a leak that only happens when the pipes are cold then once it warms up the metal expands and seals the leak. with the engine cold i would try to feel around the exhaust to see if i could feel and air being pushed out
I took it to an exhaust shop and they couldnt find anything.
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Old July 12th, 2019, 1:28 PM
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Is this in the engine area or the pipes?

You might have a broken exhaust bolt or bolts. When the manifold heats up and expands, the leak is closed.

Check your plugs as well and make sure none are loose.
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