Highway speed vibration on 2020?

[Ckhris]

Any of you guys experiencing vibrations at highway speeds like previous models had?

[MTU Alum]

Is the vibration in the steering wheel, seat/floor, or both?

 

#iworkforGM 

[BB&Chiveon]

steering for sure

[MTU Alum]

Do you have a high optioned trim?  SLT or higher on GMC, LTZ or higher on Chevy?  

 

If so, there is a service bulletin coming directing dealers how to fix.  Should be available next week.

[BB&Chiveon]

gmc denali 

[BB&Chiveon]

have had tires balanced 2x. be glad to see a fix

[Rick Murphy]

Oh no the saga continues Going on now for about 7 or 8 years

 

[MTU Alum]

Steering calibration is now available at dealers to repair the majority of these issues.  The service bulletin is not up yet so all dealers may not be aware.

[BB&Chiveon]

great , let us know # when published. taking 900 mile round trip tomorrow

[MrGraff]

I switched from Goodyear tires to Michelin.... perfect since.

[powerhaulic]

2 hours ago, MrGraff said:

I switched from Goodyear tires to Michelin.... perfect since.

X2 michelins @ 300mi for me as well

[redwngr]

Mine is an '18 that has had Michelin on it since new.

 

Always smooth. 

 

It's on 18's rather than 20's. 

 

 

[Phoenix1]

I am having the same problem. Steering wheel shakes at higher speeds. Had tires balanced and then two tires replaced and still has issue. Mine also has loose steering that comes and goes. 

[MTU Alum]

Service bulletin 19-na-240 is posted for dealers now.  

 

[bharris515]

7 minutes ago, MTU Alum said:

Service bulletin 19-na-240 is posted for dealers now.  

 

What do they do to fix? Just wondering