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Old 10-07-2015, 03:11 PM   #1
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roaring noise in 2015 2300 Sunseeker

Has anyone had a roaring noise in your unit between 35 - 45 mph? We only have 2700 miles on ours and this has started I need help please We have the Chev 4500 it is a 2014 chassis
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Old 10-07-2015, 03:16 PM   #2
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Have not experienced it.

Tire noise? Exhaust?

Edit:

During acceleration or steady? Could be tire frequency noise and a non issue but hard to say.
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Old 10-07-2015, 03:20 PM   #3
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no it has to do with the motor trans or drive shaft? I do not know
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Old 10-07-2015, 03:28 PM   #4
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Probably the the engine fan clutch. I would recommend a trip to the chassis daeler
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Old 10-07-2015, 03:30 PM   #5
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I received this service bulletin after purchasing ours. We have not had an issue though.

Vibration you describe possibly?

Torque Converter Clutch Wear – 2010-2014 Chevrolet Express GMC SavanaOEMDTC - OEMDTC
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Old 10-07-2015, 04:49 PM   #6
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Probably fan clutch.
Does it do it when it's cold?
I was surprised about the fan clutch noise - but that usually is noticed when taking off.
I may eject the engine fan if it gets annoying and install an electric fan.
Will help with the horsepower and torque also.
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Old 10-08-2015, 06:43 AM   #7
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Take it to the Chevy dealer. There is a software update related to engine/transmission shifting. Mine was done on a recall notice, even though I had not experienced any abnormal shifting.


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Old 10-08-2015, 07:30 AM   #8
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We have the same chevy 4500 w/ none of the same noise. Chevy dealer gets my vote.
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Old 10-08-2015, 03:50 PM   #9
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I agree with the fan clutch. I was on a trip out west when in New Mexico I got that loud sound like I down shifted and thought I had transmission problems. Went into a Amco Transmission shop and he immediately told me fan clutch was locking up causing it. Installed a new fan assembly and never had problem again. Some people have this happen on hot summer days in city traffic when the fan clutch kicks in.
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Old 10-08-2015, 05:12 PM   #10
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Did you install an electric unit?
If so- what type.
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