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My 2005 chevy Silverado 2500 has started making a sudden…

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My 2005 chevy Silverado 2500...
My 2005 chevy Silverado 2500 has started making a sudden growling sound when coasting downhill but the sould stops when I step on the accelerator ?
Submitted: 2 years ago.Category: Chevy
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Customer reply replied 2 years ago
this is a problem because I find myself alternately braking and gasing my vehicle to keep it from happening and it almost feels like it going into a freewheel situation
Answered in 14 minutes by:
2/14/2016
Chevy Mechanic: Roy, import/domestic specialest replied 2 years ago
Roy
Roy, import/domestic specialest
Category: Chevy
Satisfied Customers: 7,924
Experience: ASE master tech for 40 years
Verified

good afternoon my name is ***** ***** I will assist

it sounds like the differential pinion is making the noise. when the bearing wears, it get play and it shifts when slowing down and speeding up. I would have the pinion nut checked for proper torque. you may be needing to replace the pinion bearings

Roy

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Customer reply replied 2 years ago
it makes an awful sound ?
Chevy Mechanic: Roy, import/domestic specialest replied 2 years ago

a growling noise, yes

Roy

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Customer reply replied 2 years ago
Is it going into a freewheel situation
Chevy Mechanic: Roy, import/domestic specialest replied 2 years ago

ok, do youthink it is a transmission noise??? if you do, is it a*****??

Roy

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Customer reply replied 2 years ago
It is a***** I don't know what the problem is, could it be the transmission, it has been serviced
Chevy Mechanic: Roy, import/domestic specialest replied 2 years ago

if it is in the transmission you may have a planetary set failing. if it is the transfer case, it could be bearings. some one needs to find out exactly where the noise is coming from for me to give you some recommendations. have some one check out the noise to pin point where it is coming from

Roy

Roy

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Customer reply replied 2 years ago
yea that's hard to do at 60 miles per hour, thanks
Chevy Mechanic: Roy, import/domestic specialest replied 2 years ago

your welcome

Roy

ok. please dont forget to rate me as it is the only way I get paid for my efforts

Roy

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Chevy Mechanic: Roy, import/domestic specialest replied 2 years ago

please dont forget to rate me as it is the only way I get paid for my efforts

Roy

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