Some GMC Sierra HD Units Will Need A Transmission Filter Replacement

[Ozark Dually]

GM has issued a service update for certain 2024 and 2025 GMC Sierra HD units that have been found to have sediment present in their transmission fluid, with a field action available to fix the problem.

 

https://gmauthority.com/blog/2024/10/some-gmc-sierra-hd-units-will-need-a-transmission-filter-replacement/

 

 

[revrnd]

Any reason why only GMCs? Wouldn't something like this possibly affect Chevs as well?

 

Do the Sierra HDs get a specific transmission?

Edited 1 hour ago by revrnd

[newdude]

4 minutes ago, revrnd said:

Any reason why only GMCs? Wouldn't something like this possibly affect Chevs as well?

 

 

 

It affects both.  GM Authority loves to write like 10 articles about the same subject, so one recall that affects both Chevy and GMC trucks, they go and write two different articles about it.  

 

Here's the reacall - MC-11007937-0001.pdf (nhtsa.gov)

[revrnd]

3 minutes ago, newdude said:

 

 

 

It affects both.  GM Authority loves to write like 10 articles about the same subject, so one recall that affects both Chevy and GMC trucks, they go and write two different articles about it.  

 

Here's the reacall - MC-11007937-0001.pdf (nhtsa.gov)

As an side note, if it was an assy issue/plant related (like Oshawa building only Chevs), then yes specific models would be affected.

[newdude]

34 minutes ago, revrnd said:

As an side note, if it was an assy issue/plant related (like Oshawa building only Chevs), then yes specific models would be affected.

 

 

 

Correct.  It would identify the plant in there on the recall (or TSB).

 

This seems to stem from the transmission assembly plant hence it applying to both Silverado and Sierra HD.  

[revrnd]

41 minutes ago, newdude said:

 

 

 

Correct.  It would identify the plant in there on the recall (or TSB).

 

This seems to stem from the transmission assembly plant hence it applying to both Silverado and Sierra HD.  

I remember a recall where a fastener joint wasn't properly torqued. The number of cars involved was between 400 and 500. To my 'untrained eye' it sounded like the power tool used for that job didn't get or was improperly validated during a particular shift.