Front Differential (or Transfer Case?) surging on hard acceleration

[SaintMiles]

Front Differential (or Transfer Case?) loping/bumping/surging on hard acceleration.

2016 Yukon AWD set to "auto"

When set to 2wd, does not do this.

Anyone experience this?

 

[intergalactron]

No warning lights on the dash?

If no warning lights, I'd get a scanner hooked up to it that can read live data and watch the wheel speed sensors.

 

[jaxscuby]

there is a transfer case re-initiation out on the web.

in neutral, foot on brake, turn selector switch all the way to the right and hold for X seconds..google it..
what I recall but not exactly.

and then you could use scan tool to do the same thing.

worth the try..

 

[SaintMiles]

I will ask around for a live reading scanner. Thanks for input

 

[swathdiver]

Front Differential (or Transfer Case?) loping/bumping/surging on hard acceleration.

2016 Yukon AWD set to "auto"

When set to 2wd, does not do this.

Anyone experience this?

Set to Auto on hard acceleration you are very likely engaging the front differential on a hard surface and they don't like this, it's perfectly normal.

Leaving the transfer case in Auto all the time reduces its lifespan.

 

[Marky Dissod]

Front Differential (or Transfer Case?) loping/bumping/surging on hard acceleration.
2016 Yukon AWD set to "auto"
When set to 2wd, does not do this.

Everyone experiences this.

Fixed it for you.

Set to Auto on hard acceleration, you are very likely engaging the front differential on a hard surface,
and they don't like this; it's perfectly normal.

As in, if you do this thing that the front diff AND the transfer case does not like -
leaving it set to 'Auto', as you accelerate hard, on hard surfaces -
you will feel lopes/bumps/surges.
When you don't feel those things anymore, they are failing.

Leaving the transfer case in Auto all the time reduces its lifespan.

Last time I drove to hospital in a mad dash, yea, I set it to 'Auto', despite perfect weather.
Apart from that, you're supposed to leave it in RWD unless the ground is wet or otherwise slippery.