NP241C Transfer Case Problems



    The GM Transfer Case NP241 thru NP261XHD Transfer Cases have a known problem that rubs a very small hole in the rear transfer case half. This hole is so small that most customers & truck owners never see oil on the ground but until it's too late. Once the transfer case is run out of oil it becomes severely damaged & requires replacement of the entire assembly.

GM Transfer Case-Damp

(click on above photo for close up) 

    The above pic shows that this transfer case already has the hole in it & has been slowly leaking for a while now. The bottom of the case looks as if it's only Damp. Anything other than bone dry requires a close inspection & fluid level check. Keep in mind that most fast lube places do not check transfer cases & manual transmissions for proper fluid levels.    

Transfer Case with hole

(click on above photo for close up)  

Hole Indicated 

(click on above photo for close up)   

This page is under construction & will have more info and pic's as soon as I can, Jeff 

under construction