Neutral safety backup switch problems - Chevy and GMC Duramax Diesel Forum
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post #1 of 6 (permalink) Old 09-26-2011, 04:40 AM Thread Starter
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Neutral safety backup switch problems

I have an 06 Silverado with a 6 speed allison. It started shifting funny and then just quit. It was dropping a P0708 code. I bought a new NSBS and then went on the hunt to find the thing. Everyone told me that the switch was on the side of the tranny, but I found it inside. It looks like all I need to do is pull the shifter shaft and slide the new switch on, but I wanted to ask if anyone had any tips for the job.

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post #2 of 6 (permalink) Old 09-26-2011, 05:15 AM
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Does this help?

Replace the NSBU switch

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post #3 of 6 (permalink) Old 09-26-2011, 05:20 AM Thread Starter
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Old style

Thanks but this is for the 05 and older. I was hoping to find the same thing for the newer allisons.

Thanks Again.
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post #4 of 6 (permalink) Old 09-26-2011, 05:23 AM
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The NSBU on the newer trucks is indeed on the inside of the trans.

Pretty straight forward on the install, just remove and swap. Clear any codes beforehand.

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post #5 of 6 (permalink) Old 09-26-2011, 06:12 AM
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I doubt it is the NSBU switch-- most likely a TCM.

That code is for high voltage-- Have you jump started anyone-?

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post #6 of 6 (permalink) Old 09-26-2011, 09:12 AM Thread Starter
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No jumpstarts

No jumping, the gear selector display just going out and then it quit shifting.
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