What did you do to your NBS GMT800 Tahoe/Yukon Today?

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Fless

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Fixed the 4x4 mode.

Before if I selected 4x4 mode, the mode light on the switch changed to that, but the Tech 2 indicated that it switches for a second to 4x4, then goes to Auto. Same in 4LO, it gears down but not in 4wd. Functionally that's the way it was working (as Auto, never full time 4x4), but the switch doesn't indicate that. No DTC codes for the transfer case. Weird.

So, after some tests pulling propshafts, etc., replacing the encoder motor on the transfer case fixed it, and now when I switch it to 4x4 all four wheels engage full time. If I didn't have the Tech 2 I'd have just been guessing.
 

camaroz2887

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Sayin goodbye to an old friend. The 03 z71 I learned to drive in when my mother owned it. It worked it’s way into my sister in-law’s possession and finally after 311,000ish miles she was gettin tired.

Salvaging parts with any cost and scrapping the rest. I really am surprised at how few issues this platform had since 05 when she got it.

039EBFC8-E550-404B-9544-3A0387636766.jpeg
 
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