1998 Chevrolet Blazer Q&A

1998 Chevrolet Blazer Question: On my daughter's 4wd blazer, the vehicle will engage 4L and 4H on it's own

this happens without pushing the 4wd buttons and seems to happen after she has driven a short distance then parks for a short time. It takes several tries to get the vehicle back into 2wd. Simply pushing the button does not work. -
Answer 1
Is it actually going into 4x4 or just the light says so? Is front axle engaged? You stated it goes into 4 lo also, are you sure about that? Should not be any trouble to tell if it is. While driving do you hear any noise like the front axle is trying to engage? I own a 2000, same setup and may be able to help with answers. Could be a simple fix. But before i go on, need more info.! -