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Re: 2010 Isuzu NPR trany not shifting
Posted to HD/Fleet Forum on 11/15/2020 1 Reply

I ran in to a similar problem last week and thought of this thread. We had a '10 NPR come in that wouldn't shift out of 1st gear, the transmission warning light was illuminated on the dashboard and the reverse alert sounded when you stepped on the brake pedal.... Login to read more.

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