New GMC Sierra 1500HD. Knock, rattle?

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04-25-2005, 10:37 PM

Doug93063

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New GMC Sierra 1500HD. Knock, rattle?

I just bought a 2005 1500HD 4WD with the 6.0 engine. On the freeway I hear a light rattle sort of like rocker arms. I took it to the dealer and the service manager said it was the injectors firing. I drove a friends identical truck and his is silent. Any advice? Now that I'm looking for it I can hear it all the time. The faster I go the louder it is. Engine has about 300 miles on it now.

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04-25-2005, 11:23 PM

shandy294

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I don't know;mine sounds quiet at 12K+ so far. Good luck!

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04-26-2005, 02:27 PM

Yelo

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my 6.0 does the same thing....it's the injectors firing, mine is kinda hard to hear anymore over the sewing machine that my cam created

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04-26-2005, 03:31 PM

TigerFan187

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Quote:

Originally Posted by Yelo

my 6.0 does the same thing....it's the injectors firing, mine is kinda hard to hear anymore over the sewing machine that my cam created

Yeah no ****! I used to bitch about my 4.8 ticking especially after the cam but then I got the LS1 and I would give anything to have the quitness of the 4.8. Anything but the LS1 of course!