Transmission Chirp. 2016 2500 mega cab 4x4

[Rwischmann]

I have had a faint “chirp” that I hear when the truck shifts from 3rd to 4th. No vibration or anything else unusual. Does not seem to happen in other gears and happed in just normal driving. Anything to worry about? What could it be?

 

[Learjet]

you didn't say you have a Aisin? If so, yes my Aisin does this sometimes. The last Software update helped.

 

[Cummins12V98]

Fill in your public signature!!!

 

[transe]

Also with the 68RFE trans, chirps on 3-4 shifts (typically at heavier throttles) are pretty common on Mega Cab trucks. There is a software update for 2016s that usually corrects it. For the ones that still chirp with the new software, we've found that flushing the trans with Valvoline ATF+4 can help to reduce or eliminate the chirp.

Although the chirp is annoying, it won't damage the trans, so fixing it is not an emergency.

 

[Rwischmann]

Also with the 68RFE trans, chirps on 3-4 shifts (typically at heavier throttles) are pretty common on Mega Cab trucks. There is a software update for 2016s that usually corrects it. For the ones that still chirp with the new software, we've found that flushing the trans with Valvoline ATF+4 can help to reduce or eliminate the chirp.

Although the chirp is annoying, it won't damage the trans, so fixing it is not an emergency.

Thanks for the feedback. The truck is a 2016 so I *** U ME that it was updated. Was not too worried about it but can be annoying. Next visit to the dealer, I will mention the chirp.