Clunk noise on acceleration

[Dubo]

I have a new 2024 Silverado 1500 4wd with the 3.0 Duramax, 3400 miles. Today, upon acceleration from a stop I'm hearing a sporadic clunk until 5-10 mph and seems to go away. No noises on turns, braking or stopping. Initial self inspection doesn't show anything obvious looking loose. Noise seems to be just under front, center, passenger area. Weird, thoughts? I will be calling dealer in morning but thought I'd ask, thanks!

[Jsdirt]

Probably the same clunk my 2007 Silverado had starting at 2k miles. Was the driveshaft splines.  Greasing them was the fix.

 

More shoddy engineering - par for the course today. GM loves to create problems and never fix them.  Definitely let GM fix that under warranty. That way it's documented in case the thing ever decides to let go when you're just out of warranty.

[Dubo]

3 hours ago, Jsdirt said:

Probably the same clunk my 2007 Silverado had starting at 2k miles. Was the driveshaft splines.  Greasing them was the fix.

 

More shoddy engineering - par for the course today. GM loves to create problems and never fix them.  Definitely let GM fix that under warranty. That way it's documented in case the thing ever decides to let go when you're just out of warranty.

Thanks for the reply and thoughts. Whatever it is will definitely be taken care of by my dealer under warranty, since the noise is a bit erratic I"m just hoping it presents itself when I get there

[Ahearn35]

On 11/22/2023 at 4:22 PM, Dubo said:

Thanks for the reply and thoughts. Whatever it is will definitely be taken care of by my dealer under warranty, since the noise is a bit erratic I"m just hoping it presents itself when I get there

I'm having a similar sounding issue with my 2021 Sierra 1500 with the LM2.  Wondering if you got this resolved and what the solution was.  TIA

[Jsdirt]

The actual fix would be to re-engineer that entire transmission or transfer case output-to-driveshaft interface. GM's fix will be bandaids to get you out of their hair. Greasing the bandaid.

 

The continuous push by government for higher and higher fuel mileage cuts into automaker's bottom lines, so they cut corners to make it up. The other half of it is the union & corporate greed. Combined, it's ruining the auto industry. Sometimes it's to the point of extremely early failure. Other times, you get unpleasant noises or vibration. The death wobble of other brands steering is one such example, as are interior squeaks and rattles. GM engines ventilating the block before the 1st oil change is another more extreme example. 

 

Without the majority of people out there owning their own machine shops, greasing is about all you can do. A more expensive option may be out there in the aftermarket world. There are quite a few driveline specialty shops out there building parts for these trucks.

 

Greasing the splines helps - just don't go overboard with it. Just a little is all it needs.

Edited January 6, 2025 by Jsdirt