All Wheel Drive Problems on 2002 Oldsmobile Bravada

The All Wheel Drive is engaged all of the time. The dealership replace a computer chip but this is a more detailed issue. Any help would be appreciated

Asked by for the 2002 Oldsmobile Bravada
my all wheel drive on my 2000 bravada will not disengauge and keeps blowing fuses
3 more answers
My 2000 seemed like it would engage almost all the time. Mine was an easy answer after much searching. NEW TIRES. My tread was low and if it slipped in the gravel, the smartrack would kick in the AWD.
Here is some good info on some of the GM 4WD issues:
i had the same problem changed the encoder sensor still stuck in awd, crop hoping on pavement and off orded re-manufactured at advance auto encoder motor/transfer case motor some call it 114.00 w/20.00 core charge free shipping next day , put in 10 minutes suv runs fine