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I was just wandering if they were the same i bought one for my 2002 gmc duramax k2500 today. It looks nothing like the one that came off my truck? The dealer wanted 239.00 for it extreme diesel only wants 89.00 for it and it looks like the one i got any help thanks guys...
 

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There are two different NSBU switches. One has two connectors-- early trans, and the other has one large plug. I think they changed on the 2003/4 model.

So that should help-- take it back, and ask for the other one, if it is wrong.
 

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thanks i got the one off of extreme diesel was hopeing it would fix my trans from going into neautral and also sticking in gear but it was no help going to have to rebuild or buy another trans..
 
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