[mnnmaz]

This my sound dumb but... when I push the 4H or 4L button on my 05 2500HD duramax I hear the hubs enguage but I dont get the little green 4x4 light on the dash?? isnt it supposed to come on when you select 4L or 4H??? Any help would be appreciated!!!!

Thanks for all your time!!:gearjamin

 

[Tow Master]

Hmm I never checked. I dont think mine has a green light. I know the 4h and 4L button is lit up when its engaged.



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[fenmor]

4x4

** electronic transfer case only ** ( manual would be similar )
I believe you have to go into neutral first , to go into 4 L . If you dont go into neutral first , the trans. will go back into 2 H . ( Im referring to a automatic ).
As far as 4 H is concerned , you should be able to shift into 4x4 while still in gear ( pls double check your owners manual first !! ).
Having the truck rolling forward under 3 mph ( 5 kph ) while you shift into 4x4 should also help it engage.