Diesel Bombers

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-   Chevy/GMC Duramax 04.5-05 LLY (https://www.dieselbombers.com/chevy-gmc-duramax-04-5-05-lly/)
-   -   help me out (https://www.dieselbombers.com/chevy-gmc-duramax-04-5-05-lly/79099-help-me-out.html)

marine3/1 07-04-2011 07:06 PM

help me out
 
I have an 04 duramax 2500 I just bought last weekend. It has 70000 miles on it, it has a ats 3 stage transmission and a few other things done to it. I am on my way home from camping pulling the camper and it starts acting funny. Its like it doesn't have all the power. So I stop shut it off start it back up and go to put it in gear and it wont go in and I get a code on the dash that says RANGE SHIFT INHIBITED. It finally goes in gear and I get going but it seems like it wont shift up to the next gear. I can only go about 40 mph and it is almost red lining. Im not driving it and waiting for a tow. Does anybody have any idea what it might be.

BriteWhiteRam 07-04-2011 08:44 PM

NSBU switch:tu:
(Neutral safety back up switch)

jbrown1132 07-04-2011 09:25 PM

check for codes, if you get a P0780 code, you most likely need the NSBU switch

Dirty South 07-07-2011 12:42 AM

for sure NSBU switch


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