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Whistle From Engine?

By AGT
November 16, 2010 in 1999-2013 Silverado 1500 & Sierra 1500

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AGT

Posted November 16, 2010

Posted November 16, 2010

My brother bought a 2006 2500HD 6.0L Gas engine and it whistles when he takes off. No CAI and no turbo altho it sounds like it has one. Ideas why?

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nickvrebel

Posted November 16, 2010

Posted November 16, 2010

did you check to see if someone installed a throttle body spacer?

Georgebaumann

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Georgebaumann

Posted November 16, 2010

Posted November 16, 2010

yah my 2002 gmc sierra with the 4.8l has the whistle too its funny when some people believe you have turbo.

gleno97

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gleno97

Posted November 16, 2010

Posted November 16, 2010

possible vacuum leak.

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