Jump to content

Whining noise 2021 GMC Sierra 1500 3.0 Duramax

josh mcquown
 Share

Recommended Posts

josh mcquown Enthusiast

josh mcquown

Posted
Posted

I have a 2021 GMC Sierra 1500 AT4 3.0 Duramax, with 105,000 miles. I have recently noticed a whining noise that follows the engine RPM. I tried to access the idler pulley to verify its not the problem, but it's very difficult to reach. The whining does not sound like it's coming from the front or top of the engine bay. The whining sounds like its coming from the back, lower portion of the engine, where the transmission mates. My fear is that it's the engine oil pump that is sandwiched between the engine and transmission. There is a recommended oil pump belt replacement at 150k miles. Has anyone else experienced this issue? Has anyone done the oil pump belt replacement? I'm curious what it costs and if I should go ahead and have it done now and have the engine oil pump pulley replaced to avoid a catastrophic issue. I drive a ton, about 50k a year. 

 

Any feedback, thoughts, solutions, etc are greatly appreciated! 

josh mcquown Enthusiast

josh mcquown

Posted
  • Author
Posted

Turns out it was my transmission! I thought it was the engine considering it followed RPM. Guess I'll stick to woodworking. 

Ioniq MPG Enthusiast

Ioniq MPG

Posted
Posted

I have this sound at 25k. Is/did your transmission get replaced? Any word on which component(s) in the transmission failed? Thanks in advance 

josh mcquown Enthusiast

josh mcquown

Posted
  • Author
Posted

My transmission crapped out on the freeway last week. The transmission is currently being replaced with a refurbished unit. I'm also having the oil pump belt and rear main seal replaced while the transmission is out. My truck was out of warranty, but I contacted GM support and they are covering 70% of the transmission cost. So basically, the total is costing me what it would have cost to have the oil pump belt done. The oil pump belt was a fraction of what it should cost since transmission R & R is being covered. 

 

I do not know exactly what failed in the transmission. The dealership is not opening the transmission since its being replaced. I doubt I'll ever know what failed. 

 

If your truck is making a whining sound, I would take it to the dealer now so that if it fails outside of warranty you have documentation that you were concerned about the noise at 25K and a dealership inspected the noise. 

 

How does your truck shift? I noticed a hard downshift while on the frwy, letting off the accelerator and on the brakes. 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,826
    Total Members
    8,960
    Most Online
    Tonwantonga
    Newest Member
    Tonwantonga
    Joined

  • Who's Online   1 Member, 0 Anonymous, 457 Guests (See full list)

  • Latest Articles

  • Posts

    • Atlas
      Gas Prices

      By Atlas · Posted

      I understand that. The price is what it is, though. The price is what oil costs today, where our choices have led us, where supply is, and where demand is, in the market that is. Speculation is for futures, what we think the price will be, but with incomplete information at the time the price is forecast. I know you know this, but you appear to be intent on making a secondary point here about what you think the market could or should be, if only other choices.   In 1975 it became illegal to export US Crude. I'm conflicted on what the best answer is. Free markets allow export in pursuit of profit. But there is also a lot to gain by producing and consuming our own oil here. How do you reconcile it?
    • Grumpy Bear
      Gas Prices

      By Grumpy Bear · Posted

      That sir is a choice. And even if it were not for all the reasons stated, this disruption has zero to do with the reality of the actual logistics and everything to do with the greed of SPECULATION. Spot price is irrelevant to reality. 
    • Atlas
      Gas Prices

      By Atlas · Posted

      What I think you're saying is there is supply here at home, and in Venezuela, and we could ease pricing if only it were favorable to do so.   Well, yes?   But that's not the current market. Supply isn't what could someday exist, if only, it's what producers are willing to produce and sell at a certain price point.   The national price of single family homes would come way down if we'd just slap together a few million homes this summer.   RAM and GPUs would get a lot cheaper if we just set up some factories to produce a bunch more and stopped using it to build out AI data centers.    
    • newdude
      wipers come on randomly

      By newdude · Posted

      The turn signal/multifunction switch is faulty.  I've seen a few of these go bad at work.  
    • bluemonstercali
      wipers come on randomly

      By bluemonstercali · Posted

      I am experiecing the same issue, I have gone in the setting and disabled rain sensing function but I am still experiencing this. Whe i use my turn signal they will redomly turn on. Sometime they stay on and others times we swipe 2 or 3 times and stop. Its super anoying, escpecially after a fresh wash. Anyone have any advice? . rain-sensing function, but I am still experiencing this issue Sometimes they stay on, and other times we swipe 2 or 3 times and stop.It's super annoying, especially after a fresh wash.When I use my turn signal, they will randomly turn on. I am experiencing the same issue. I have gone into the settings and disabled the rain sensing function, but I am still experiencing this.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...