New yukon Denali 2013

[The biker]

Hi every body

This is my first thread in this forum. I got new 0 meter GMC Denali 2013 yesterday while I was driving i felt fluctuation in the RPM. It was going slightly up than slightly down ward so I tried going on 60 MPH with cruise control on but it did the same thing. And the other issue is the acceleration from 2nd shift to 3rd feels poor I called serves centre and informed them about the issues. They said the RPM fluctuation is normal with all Yukon Denali and regarding the shift issue needs new software to be downloaded. So I am wondering is any of you guys have the fluctuating RPM and is it normal on Yukon Denali.

 

[Big Buttons]

 

[Freedom Motorsports]

Welcome!

 

[doubletapdrew]

Haven't heard of that before but you can take it to any GM dealer and they should be able to flash the ECU with the newest updates under warranty.

 

[undy]

I've got a new 13 Denali and have not noticed this at all.

 

[GM Customer Service]

Hi every body

This is my first thread in this forum. I got new 0 meter GMC Denali 2013 yesterday while I was driving i felt fluctuation in the RPM. It was going slightly up than slightly down ward so I tried going on 60 MPH with cruise control on but it did the same thing. And the other issue is the acceleration from 2nd shift to 3rd feels poor I called serves centre and informed them about the issues. They said the RPM fluctuation is normal with all Yukon Denali and regarding the shift issue needs new software to be downloaded. So I am wondering is any of you guys have the fluctuating RPM and is it normal on Yukon Denali.

Hello and welcome to the forum! I understand that you may have some concerns about your new Yukon Denali. I would like to look into these concerns for you. Please private message if I can be of any assistance.

Best regards,

Jennifer T.
GM Customer Care

 

[The biker]

please click at the you tube link to watch the video. the cruise control is on and the road is straight flat and see the rpm needle jumps from 1300 to 1500. The GM dealer guy said its normal in all 2013 Denali s

http://youtu.be/lK-qpf7Ox3k

---------- Post added at 11:28 AM ---------- Previous post was at 11:09 AM ----------

please click on the you tube link to watch the video of RPM fluctuation. I talked to GMC dealer guy and he tested the car and said the fluctuation in the rpm is normal all yukon Denali 2013 has the same fluctuation .

http://www.youtube.com/watch?v=lK-qpf7Ox3k&feature=youtu.be

 

[livingez_123]

That is quite the noticeable surge, can you feel it? is your ac on when it's doing it?
When I set the cruise on my Denali when towing it never does anything like that. But, when my ac cycles off and on, I can feel and see it in the tach when I'm on cruise.

 

[08grey]

^^^ what he said. Try it without the ac..... and see if you can feel it.

I just did 1400 miles on cruise control and did not notice anything like that.

 

[ChickenForker]

Have a 2013 as well and have never noticed what youre seeing....Went from the dealers lot to a 1500 mile road trip. I didnt notice any of that!

 

[OBSSSD]

My wife has a 13' Escalade with the same powertrain but no such issues

 

[The biker]

Got the Yukon back from the dealer without any changes they said its normal and nothing to worry about it. And its on life time warranty if something happen we are going to do the need full.

 

[soulsea]

It might be cause it's coming in and out of 4cyl mode. Easy way to test the theory, you can have the AFM readout on the DIC whilst you're driving and see it the two coincide.

 

[Ben]

 

[sickk23]

It might be cause it's coming in and out of 4cyl mode. Easy way to test the theory, you can have the AFM readout on the DIC whilst you're driving and see it the two coincide.

This. And that sucks because the switch from 4 to 8 only gets worse. Then it will start vibrating eventually. Verrrrry annoying. My hoe right now is my first GM SUV (5 of them since 07) that it isn't horribly noticeable. But I have major transmission issues...

 

[Juniorss]

My truck does this as does my dads 2012 tahoe.. Its not really noticeable unless you're really trying to feel for it but its visible while looking at the tach like in your video. I honestly just started noticing it in my truck but then I drove my dads 2012 and watched it do the same thing. Im going to say its normal.