Auto 4WD Issue locking front right tire

[phatz_hatz]

Around 40-50 MPH with Auto 4WD selected, feels like front passenger side tire is either locking up or “ sputtering “ When i put into 2H it seems to alleviate issue a lil bit but still happens intermittently. Is this an issue with auto braking assist or something to do with the 4WD module. Almost feels like hitting rumble strips on a highway. Have 100k warranty 2016 LTZ Tahoe with 80K, just want insight if anyone’s ran into this issue before. Newer vehicle to me, not used to all this electronically controlled shit. Thank you in advance.

 

[swathdiver]

Around 40-50 MPH with Auto 4WD selected, feels like front passenger side tire is either locking up or “ sputtering “ When i put into 2H it seems to alleviate issue a lil bit but still happens intermittently. Is this an issue with auto braking assist or something to do with the 4WD module. Almost feels like hitting rumble strips on a highway. Have 100k warranty 2016 LTZ Tahoe with 80K, just want insight if anyone’s ran into this issue before. Newer vehicle to me, not used to all this electronically controlled shit. Thank you in advance.

Does it do it also in 4HI? If not, this seems more like a transfer case issue. If so, it's likely a front differential issue and should be taken in, drive in 2HI until it's fixed.

Do you drive in 4AUTO all the time?

 

[Fless]

Have the wheel speed sensors been graphed and compared to see if that one is off a bit?

Brake caliper "floating" okay? Slide pins lubed and free?

 

[phatz_hatz]

Does it do it also in 4HI? If not, this seems more like a transfer case issue. If so, it's likely a front differential issue and should be taken in, drive in 2HI until it's fixed.

Do you drive in 4AUTO all the time?

Just got the truck 2 weeks ago, when i test drove it, it was in auto 4. When we picked it up they put it in 2H. So curiosity yesterday put it in auto 4 and it started happening. Put it back in 2 Hi haven’t tested it in 4HI.

 

[swathdiver]

Just got the truck 2 weeks ago, when i test drove it, it was in auto 4. When we picked it up they put it in 2H. So curiosity yesterday put it in auto 4 and it started happening. Put it back in 2 Hi haven’t tested it in 4HI.

Ok, test it out in those positions and let us know.

Running around in 4Auto wears out the components prematurely. It was not made for daily use over the life of the vehicle. Folks who drive in 4Auto all the time are lucky to get 100K miles on their transfer case before requiring overhaul.