Question about Holden Cars & Trucks
SOURCE: Valve train tapping?
The 6.0 engine had an issue with piston to bore clearances, from the factory these clearances were excessive. It is reffered to as "piston slap". This condition is known by GM, but most dealers say it's normal. It can be as slight as an annoying tick, to a clearly audible clacking noise. Unfortunately the condition was under played by GM, and there are many folks who haven't been able to get help with their trucks. I own an '03 Silverado w/6.0, and hear this noise everytime I start my truck. I deal with it, because I'm a mechanic and figure I'll be able to fix it if I need to. Research more online about this condition. I've found many websites that relate to this issue (Google: 6.0 piston slap) I hope this helps.
Posted on Nov 19, 2008
SOURCE: Loud ticking noise from motor
are you sitting down.........has someone been doing burn outs in the parking lot? sounds like a spun bearing. drop the oil pan a inspect all rod and main bearings.
Posted on Feb 20, 2009
SOURCE: the rocker arm ticks
before trying too much the lifters will sometimes bleed off some of the prime they have. first try putting in a pint of marvel mystery oil. if that doesn't fix it run an oil pressure test to see if you need a new pump or new lifters
Posted on Mar 23, 2009
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