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Chevy Silverado and GMC Sierra Noise and Vibration

173 messages,  Last post on Dec 04, 2009 at 8:45 PM

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What is this discussion about? Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Truck

#3 of 173 4.8L Tipping Noise by gumpp08 Apr 17, 2006 (5:08 pm)
I have an 02 silverado it has 79000 miles and the motor makes a tapping sound. It sounds like a lifter, I took it in under warranty and they say that it is typical. They say it is carbon on the pistons. They won't do anything about it. Anyone have this problem and what did you do?? Replies to this message: obyone (Apr 17, 2006 10:14 pm) p100 (May 01, 2006 8:54 pm) noobie1 (May 06, 2006 10:26 am) sd11181 (Aug 24, 2007 9:28 am) bjandpeggy (Oct 11, 2007 5:32 pm) pbug777 (Jan 11, 2008 7:27 pm) jarhead1098 (Dec 28, 2008 4:45 pm)
#4 of 173 Re: 4.8L Tipping Noise [gumpp08] by obyone Apr 17, 2006 (10:14 pm)
Replying to: gumpp08 (Apr 17, 2006 5:08 pm) The engineers at GM have determined that this tapping noise will have no effect on longevity of the motor. That is why the dealer will not do anything. Course they are suppose to explain that to you. Now whether you beleive that or not well that's another story.   BTW, there is a TSB out addressing this and it does state what I've typed above. Replies to this message: p100 (May 01, 2006 8:54 pm) noobie1 (May 06, 2006 10:26 am)
#5 of 173 Re: noise under hood [jabo2] by jamci Apr 27, 2006 (6:44 am)
Replying to: jabo2 (Mar 12, 2006 9:49 am) 2005 Sierra - same noise - nobody knows what it is. Replies to this message: jneal (May 03, 2006 5:53 am) wingsh00ter (Dec 21, 2006 11:33 am) wingsh00ter (Dec 21, 2006 11:37 am) wingsh00ter (Dec 21, 2006 11:42 am)
#6 of 173 Re: 4.8L Tipping Noise [obyone] by p100 May 01, 2006 (8:54 pm)
Replying to: obyone (Apr 17, 2006 10:14 pm) Actually, the engineers at GM have determined that there is nothing they can do about it because the upper management told them to STFU. It can probably be stated that the tapping noise will make the engine readh the 100k mark, and that's probably good enough for them. Replies to this message: noobie1 (May 06, 2006 10:26 am)
#7 of 173 Re: noise under hood [jamci] by jneal May 03, 2006 (5:53 am)
Replying to: jamci (Apr 27, 2006 6:44 am) I had a strange noise under the hood of my old Chevy once while cranking it......mama's cat never was the same after that!!
#8 of 173 Re: 4.8L Tipping Noise [p100] by noobie1 May 06, 2006 (10:26 am)
Replying to: p100 (May 01, 2006 8:54 pm) Longevity aside, what the engineers and that TSB (GM) do not address is the lost value to the vehicle caused by the tapping. I, and I assume most smart buyers, would not buy one making that noise (without significant discount).   -David
#9 of 173 HIgh pitched sound while driving by silvertruk Jul 01, 2006 (8:08 am)
My 2002 Silverado 1500 makes a high pitched sound when I start the engine. Although the sound goes away after a few minutes of idling, when I engage the drive and give it gas it starts again and the pitch increases/decreases depending on if I push the gas pedal down/let go. This is when the truck is in motion. Is this the fuel pump? Thanks in advance for your help. Replies to this message: l204 (Oct 05, 2006 7:23 pm)
#10 of 173 Re: HIgh pitched sound while driving [silvertruk] by l204 Oct 05, 2006 (7:23 pm)
Replying to: silvertruk (Jul 01, 2006 8:08 am) Sounds like the serpentine belt is slipping and or you may have a broken or weak tension pully. When you first start it up its under strain because the alternator, water pump and A/c all kick in. Then they get up to speed until you step on the gas and speed everything up. A fuel pump is under a steady pressure. You can check this by taking the belt off and starting it. Just dont run it long. NO Engine COOLING with out the belt on. Also keep in mind if its a bearing in the alternator or water pump it will also go away when you take the belt off. Where is the sound coming from? Under the hood or back Of the truck?
#11 of 173 '07 Classic Silverado Drone by jschunke Sep 14, 2006 (7:27 am)
#12 of 173 '07 Classic Silverado Drone by jschunke Sep 14, 2006 (7:27 am)
I just bought an '07 Silverado 1500 crew cab, short bed, 5.3L, 2 wheel drive, 3.23 rear. The stock exhaust has an irritating low frequency drone when I give it gas. I have tinnitus and am very sensitive to noise. I need this thing to be near silent! There are several options:   1) leave it be for a while and let the muffler break in. Maybe it'll quiet down. 2) add a resonator (a dynomax super turbo, for instance) before the muffler, but that would put it right under the cab. 3) wrap the stock muffler with some kind of sound insulation. 4) insulate the cab with acoustic material.   Has anyone else noticed that this automatic transmission whines under certain conditions?   Other than that I like this truck. Reasonably quiet (besides the wind noise). It doesn't feel like I'm driving a four story building (F150). It also puts out relatively low electromagnetic field (EMF) emissions. For other truck EMF ratings see, www.ahappyhabitat.com Warning to Toyota Tundra drivers: You are being exposed to a good deal of EMF.   Best, JES

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