Hoping to see if anyone has any idea why I would be experiencing a whine when accelerating from 1st gear into 2nd? The noise increases with rpm. It is faint but still noticeable and annoying. I'm guessing it's coming from the transmission pump? I did a quick search on the topic and found 1 previous complaint but that was from 2009 and was hoping some new info has been discovered regarding the matter. I do have a BB tune but I highly doubt this would have anything to do with it. Truck as 6k on the odometer. I'm considering calling Circle D and seeing what they have to say since they work with the 6L80. Thanks gents.

 

my 4l80e does the same thing, been doing it for a while and haven't had any issues with it

 

Some 80E's do this due to the cut of the gears , my 80e in my van whines , but the 80E in my truck does not .

As far as the 6L80E I don't think it's sposed to whine , my Denali is quiet as can be.

 

What year is the truck?

 

My 6l80e whines. 2010 Sierra.

Usually when racing you can hear it whining alot on OD.

 

i agree with Tim, my work van is a 2500 express and it has a distinct whine and the 80 i just put in my truck does not