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  1. A

    Rest in peace Mike (C20ELEPHANT)

    I didn't know him but to lose anyone is no good - RIP. Must of been a good guy by the response on this page. I'll put one up for him. Sorry for the loss.
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    New LB7 Owner from Ohio

    Thank you all for the warm welcome!!
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    Shift Range Inhibited...P0872

    One thing that is a weird is that only my 4Hi worked before this issue. No 4Lo. I have replaced the NSBU switch and the ignition switch and reset the codes. Now all of a sudden both 4Hi and 4Lo works now.
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    Allison 5sp: Getting a shift range inhibited message.

    Ok, I thought I read before that the code means there may be a stuck "E" valve that may need to be cleaned and reamed out. My next steps were going to be pull the spin on filter and check for debris, pull the pan, check fluid, change filter and clean the magnets. Then pull the valve body...
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    Shift Range Inhibited...P0872

    I have only had it for a year, but no issues until last week. I don't really drive it super hard, I've only pulled a few cars here and there. Truck is only used to haul my equipment in the bed for work. It has some sort of tune, maybe efi live, but I never really use it. Lemme know what...
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    New LB7 Owner from Ohio

    There's a guy/shop down in Mason, OH that builds tranny's. Talked to him a little yesterday. I'm just worried about the amount of debris in the tranny and don't want to be on the road with debris or chips stuck in the valvebody, etc., and limping the trans again. Or I could just cough up the...
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    New LB7 Owner from Ohio

    Dayton area (Trotwood @ I-70 and Route 49)
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    New LB7 Owner from Ohio

    I've had my 03 Lb7 for about a year now, love it. Been having some trans troubles lately so hopefully the forums can help me out before I decide to swap the trans.
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    Shift Range Inhibited...P0872

    Need Help! Ok, so I have a LB7 03 Duramax and I got this shift range inhibited message. My truck will start to move in Drive, then all of a sudden RPMs drop and it feels like it goes into Neutral or something. Also, when I go in reverse, there's very late response and it clunks into R kind of...
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    Allison 5sp: Getting a shift range inhibited message.

    I am getting this Shift Range Inhibited Message as well, but I only have 1 code which is PO872 which its something about Trans Temp Sensor/Switch C Circuit Low. So I should be checking the speed sensor as well? First I need to find it. Any ideas?
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