2006 LBZ Duramax thump from airbox

BottleNeck

New member
Nov 22, 2023
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Michigan
Hello everyone I am new to the forums I hope im in the right section recently purchased a 2006 GMC Sierra 2500hd crew cab long bed with 256k miles and the truck is rust free. I purchased the truck for a good price due to a problem that it has. The truck runs and drives great but im hearing a whooping sound from the air box and slightly louder than normal tick from the passenger side of the engine and im not sure where I should start or what I should do. If anyone can point me in the right direction on where to start.
 

1FastBrick

Well-known member
Dec 1, 2016
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Junkyard
 
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BottleNeck

New member
Nov 22, 2023
2
1
3
Michigan
Thank you for replying to me 1FastBrick I appreciate It im gonna go ahead and dabble into the engine and check out the rocker arms!
 
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