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24 2500 HD front diff squeaking.

20L8TSierra24
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20L8TSierra24 Senior Enthusiast

20L8TSierra24

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I've read about several 24's squeaking at idle. Mine squeaks while in gear but not in neutral. At idle (in gear) I have had a faint squeaking sound for several thousand miles. The sound is coming from the diff right where the drive-shaft is. I can spin the forward shaft and replicate the squeaking by hand. The noise is getting louder as I put more miles on the truck. 

 

Taking it in this week for this and also a Trans shudder upon light acceleration or going up any incline with the cruise on. 

 

GMCustomerService Senior Enthusiast

GMCustomerService

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13 hours ago, 20Denali22 said:

I've read about several 24's squeaking at idle. Mine squeaks while in gear but not in neutral. At idle (in gear) I have had a faint squeaking sound for several thousand miles. The sound is coming from the diff right where the drive-shaft is. I can spin the forward shaft and replicate the squeaking by hand. The noise is getting louder as I put more miles on the truck. 

 

Taking it in this week for this and also a Trans shudder upon light acceleration or going up any incline with the cruise on. 

 

We are sorry to see that you are facing these squeaking concerns with your vehicle and would like to take the time to investigate further. Please send us an email to [email protected]. Be sure to include your Username and Forum name in the subject line with additional details. We look forward to your email. 

  • 2 weeks later...
20L8TSierra24 Senior Enthusiast

20L8TSierra24

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Posted (edited)

Dropped off today.

 

Front diff needs disassembly to determine what's squeaking. Noise almost sounds like a washer or shim rubbing the inside of the housing. 

 

The Trans has to also be looked into further. The shudder is during light acceleration or up any incline with a trailer hooked up. The truck also has a louder than normal converter whine to it as well. It's most noticeable around 1800 RPMs or so. Almost sounds like a turbo at times. Dealer said they're going to dig into the transmission/converter to determine the problem. 

 

Owned it for 2 months and it has 12k miles on it. 

Edited by 20Denali22

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