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Chevy Silverado 2010 Differential Sound

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by Majed, Oct 31, 2013.

  1. Majed

    Majed New Member

    Hi,

    I own Chevy Silverado 2010 LT, Auto transmission.
    For last few days im hearing a humming sound from the front differential when the car is in auto.
    When i put it on 2WD there is no sound.

    What can be the problem. i checked the fluid level its ok.

    Any Suggestions?
  2. j cat

    j cat Active Member 1000 Posts 100 Posts

    as the vehicle ages you will get some sound from the front diff when in auto or 4wd. also a slight vib .

    do not use this vehicle in any 4wd selection on dry solid pavement. this will cause damage to the drive train. only use 2wd high .

    also be sure to rotate the tires often 10-13K miles to ensure they are all at the same wear .
  3. Majed

    Majed New Member

    Thanks J. Cat for the suggestion, I have new tires and I'm not a off road guy. The car is on 78,000km.

    Any other thing which I can change and fix the problem?





  4. Pikey

    Pikey Moderator Staff Member 1000 Posts 100 Posts

    You can change the fluid in your front diff. You have about 50000 miles on it, so now would be a good time. I have an 05 with a new front diff and new transfer case. I get the same noise you describe in auto and in 4wd. I only use 4wd, I never use auto. I only use 4wd when there are 6+ inches of fresh snow.
  5. j cat

    j cat Active Member 1000 Posts 100 Posts

    the drive train fluids should be checked at every oil change for level and color.

    when my silverado was new I had to replace the front diff fluid every 5,ooo miles 3X then the oil stayed clean. I was getting a discoloration of the oil. after that I replace at the 40,000 mi mark with just normal light duty trucking..
  6. stchman

    stchman New Member 1000 Posts 100 Posts

    The vehicle the OP has is still under the 5 year 100K mile powertrain warranty. Take it to the dealer and let them look at it.
  7. Majed

    Majed New Member

    I changed the fluid but still the same...

    I will take it to the dealer but it will cost me fortune just to have checked up. :(
  8. Pikey

    Pikey Moderator Staff Member 1000 Posts 100 Posts

    If you are under 100,000 miles it will be covered under power train warranty as [MENTION=39185]j cat[/MENTION] mentioned.
  9. Majed

    Majed New Member

    sure i will give a try from the dealer. :)
  10. j cat

    j cat Active Member 1000 Posts 100 Posts

    my guess is this is normal. have the dealership go with you for a short ride and most likely this will be just a normal sound with this in 4wd....

    If your from canada you may have to pay .. with your mileage what drive train fluids have you replaced ? did you have the rear diff cover removed cleaned and the oil replaced .

    normal hum from the rear diff is also the norm.... replacing the rear diff fluid and cleaning out the box/magnet causes the rear diff to work faster and more efficiently.

    good luck ...

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