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Back Woods · 07-25-2006, 03:00 PM

Engine knock?

Caused by the hydraulic lifters when first started?

My dads 02 seirra 6.0 did this. It was still in warrenty so he took it in and the put a 2003 engine in it for free. Aluminum heads, it was alot nicer. But the truck only got 8mpg.

07-25-2006, 03:00 PM	#147
Back Woods Registered User Status: Offline Join Date: Jun 2006 Member ID: 49611 Pics: My Gallery Location: Michigan Posts: 207	Re: Recalls & Engine Knock Info Engine knock? Caused by the hydraulic lifters when first started? My dads 02 seirra 6.0 did this. It was still in warrenty so he took it in and the put a 2003 engine in it for free. Aluminum heads, it was alot nicer. But the truck only got 8mpg.