Have a 2006 chevy silverado , when I turn the
ignition on the 4x4 light is on the 4 wheel high slot.
Then as I am driving the engine will stall and then
continue to run rough. This don't not happen all the
time. I can go alittle ways and cut the truck off and
it goes back to the 2 wheel drive mode and run
Sounds like the all wheel drive switch is shorted out
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