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Chevy Silverado and GMC Sierra Noise and Vibration

172 messages, Last post on Oct 28, 2009 at 1:49 PM
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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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Replying to: jamci (Apr 27, 2006 6:44 am) If you do a search for "steam teapot" on the forum you will see someone else had the issue, but did not leave me a way to reply. He had a newer truck also. If you search on "Driveline Vibration/Growl Noise" (msg# 329) there looks like there is a TB on reprogramming the PCM. I just started looking into this issue and the TB mentions something about the torque converter clutch exciting various driveline components. Other than the noise, I have not noticed any other symptom or side effects. Let me know if anyone else discovers additional info.
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Replying to: wingsh00ter (Dec 21, 2006 11:33 am) GMC Sierra: Problems & Solutions msg# 329 - Tech Bulletin msg# 1454 - Other post about issue. Good luck
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Replying to: wingsh00ter (Dec 21, 2006 11:37 am) Driveline Vibration/Growl Noise (Reprogram PCM) #99-07-30-024 Driveline Vibration/Growl Noise (Reprogram PCM) 2000 Chevrolet and GMC C/K Utility and Pickup Models (Silverado and Sierra) with 4.8 L or 5.3 L Engine (VINs V, T -- RPOs LR4, LM7) and Hydra-Matic 4L60-E Transmission (RPO M30) Condition Some customers may comment about a driveline vibration/growl noise at speeds between 56-80 km/h (35-50 mph) with low engine speeds. Cause Engine torsional vibration when the torque converter clutch is engaged at low engine speeds, 1100-1400 RPM, can excite various driveline components. These driveline disturbances can cause noises and vibrations that the driver may feel and/or hear. Correction Reprogram the Powertrain Control Module (PCM) with the calibrations listed in this bulletin. |
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Hello everyone, First time to this site and all I will say is wow there is enough awesome info. here to keep me up way too late at night learning. Anyway I shall be purchasing a new Silverado by the end of January and was very interested of course in finding out if anyone out there has or is going to be doing the same and what the heck people are paying for these expensive machines. I have invoice and MSRP already but I don't have anyone in the business so I won't be getting any "plan" discounts. Any help would be great. Thanks ya'll. |
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i have a 2003 1500 hd sierra, at 40+ mph i havea thump , thump thump noise, you can feel it in the steering wheel, the floor and pedals. when you apply the brakes it seems to stop. or when you turn a curve it seems to stop. i have checked everything i can, greased the steering , checked the brakes, fluids, u joints. i think i'm down to wheel brg. but they dont seem to be lose or feel rough when i roll the wheel jacked up. has anyone else had this prob? this truck has not been abused.
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Replying to: painkiller (Feb 19, 2007 5:00 pm)
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Replying to: gmcproblem (Feb 21, 2007 5:51 am)
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