6.0 Engine Noise?

SS Crew · April 13, 2005

I've driven a Suburban with a 5.3 and man, is that engine much quieter than my 6.0. Is it due to better insulation? I've noticed that the air tube from the air box to the throttle body is a different shape on the Sub, maybe that's the reason?

Scyry · April 13, 2005

My Mom's Tahoe (5.3) is a lot quieter than my truck or my Dad's (both 6.0). Maybe the SUV's have better cab, noise insullation? I really have no clue, but that make sense, since they are targeted at soccer Moms.

gn4u2c · April 13, 2005

My Mom's Tahoe (5.3) is a lot quieter than my truck or my Dad's (both 6.0). Maybe the SUV's have better cab, noise insullation? I really have no clue, but that make sense, since they are targeted at soccer Moms.

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sounds like you have the older 6.0 piston slap blues ...newer ones have a diffrent material making them quieter. If you go toany dealer and bitch alot they will decarbon them and it will be quiet for a few weeks but the noise will come back. Under multiple complaints they can extend you engine coverage to 100k with GM's authorization.

Good luck and there is nothing wrong with it making the nosie it will not affect it's lifespan.

Scyry · April 13, 2005

sounds like you have the older 6.0 piston slap blues ...newer ones have a diffrent material making them quieter. If you go toany dealer and bitch alot they will decarbon them and it will be quiet for a few weeks but the noise will come back. Under multiple complaints they can extend you engine coverage to 100k with GM's authorization.
Good luck and there is nothing wrong with it making the nosie it will not affect it's lifespan.

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Don't get me started on piston slap...mine is probably one of the worst you will ever hear. Dealer still claims it is normal, decarb does nothing, only thing I have found to quiet it a little is running 10-30 in the truck. Mine sounds like the lifters are going to fly out of the engine and I often get, "is that a diesel?" I had already bought a 100k extended warranty so when they offered it and wouldn't refund my money, it pissed me off even more.

snoman · April 13, 2005

sounds like you have the older 6.0 piston slap blues ...newer ones have a diffrent material making them quieter. If you go toany dealer and bitch alot they will decarbon them and it will be quiet for a few weeks but the noise will come back. Under multiple complaints they can extend you engine coverage to 100k with GM's authorization.
Good luck and there is nothing wrong with it making the nosie it will not affect it's lifespan.

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Don't get me started on piston slap...mine is probably one of the worst you will ever hear. Dealer still claims it is normal, decarb does nothing, only thing I have found to quiet it a little is running 10-30 in the truck. Mine sounds like the lifters are going to fly out of the engine and I often get, "is that a diesel?" I had already bought a 100k extended warranty so when they offered it and wouldn't refund my money, it pissed me off even more.

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Ah the big GM piston slap routine. ANd GM used to build such quiet engines in the past too. The slap problem is not unique to the 6.0 and I have seen some noisy 5.3 too. I do not recall any 4.8's slapping but that do not mean that some do not. GM should do the right thing and fix them but it would cost them 10 or even 100's of millions to do so as there are a lot of them out there with that problem so they want to keep the stock holders happy and not pay out on anything such as that which could cascade into a massive recall.

SS Crew · April 14, 2005

My truck doesn't make the rattling sound you're talking about. Just overall noise, maybe it's intake noise, but it's just much louder than that 5.3 Sub.

catiaeng · April 14, 2005

The 6.0 is built very differently than the 5.3, and with the 6.0 you are getting an engine not ment for fuel mileage, but for torque and power. If you want a quiet 6.0 get a Denali or some expensive SUV. ITS A TRUCK!

Sorry to rant..... my wife's boss has 6.0 in a burb, just as loud as mine with all the ticks grunts. A guy at church has a Denali w/ 6.0 and it's not as loud, but still louder than the 5.3, and thats from outside the vehicle. From the inside you can't hear a thing, not even the tree huggers crying when you drive by.

BJ

Scyry · April 14, 2005

My dad's doesn't tick either, 03 vs my 01. I was still referring to the overall "roar" of the engine is louder in our trucks, vs. the Tahoe. I just was figuring the SUV's probably had better sound insullation, because the wind noise is less in the Tahoe too.

SS Crew · April 14, 2005

The 6.0 is built very differently than the 5.3, and with the 6.0 you are getting an engine not ment for fuel mileage, but for torque and power. If you want a quiet 6.0 get a Denali or some expensive SUV. ITS A TRUCK!

Sorry to rant..... my wife's boss has 6.0 in a burb, just as loud as mine with all the ticks grunts. A guy at church has a Denali w/ 6.0 and it's not as loud, but still louder than the 5.3, and thats from outside the vehicle. From the inside you can't hear a thing, not even the tree huggers crying when you drive by.

BJ

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I'm not bitching about my mileage ( at least in this thread), If they can cut down the roar of engine noise on the Sub and the Denali, then they have the technology to do it in the trucks. At better than $30k for a nice truck, they better make the interior more pleasent in the trucks. Even if they added a sound deadening package like they do to the diesels, I'd pay the extra for it.

I must be getting old, I don't think the roar and drone of an exhaust is that cool anymore. I'd like to hear it at idle and only when I get on it. If I'm cruising and towing to the river for three plus hours, I don't want to hear it.