Need Help 4x4 not working. 2007.5 Yukon SLT No service 4x4 light.

[Fless]

If you would rather parts cannon this is a good video on that “motor”

Looks like he's working on the next gen SUV, so it's not the same.

 

[LordWayback]

Looks like he's working on the next gen SUV, so it's not the same.

they have a similar part that functions the same just installs differently this is their part if they were to parts cannon one on

 

[Spoon Nthu]

Depending on your exact year and model it may be a issue with this part they only ever occasionally go out but if you force it with a scan tool and it still won’t do it besides wiring this little motor that has to do with the transfer case may may be faulty
View attachment 429802I kept thinking it’s this guy or the transfer case control module. I’ll look into how to test this guy with a meter,or power probe. So I don’t have to parts cannon it.

 

[Fless]

A good bi-directional scan tool will show what's commanded vs. what is actual.

 

[LordWayback]

I think you can power probe a specific pin with it grounded and it’ll turn one way or the other like a blend door actuator however the scan tool is much easier as you can pull the motor off and command it to turn if it turns correctly while dismounted then it’s a transfer case issue

 

[LordWayback]

I don’t know if your model will work with the 2008 manual as you have a 2007.5 but most of the electricals 4wd wise should be the same pdf dump of a 2008 GM electrical book