New purchase from dealership and unable to verify if the 4wd HIGH/LOW lock? The individual lights will flash, yet the 4wd light, 11 o'clock position, remains lit? Drove on hard surface as if locked, yet I took 10 mins to unlock and quit hopping while turning? Thanks in advance

 

2008 HUMMER H2 Owner Manual

 

try putting the truck in neutral before switching.

 

Thanks

 

Shift motor could be getting old and beginning to fail. if you can get the dealer to replace it that would be good for it.