Why won't my 4wd go back into 2wd and what do I need to fix. on 2000 Cadillac Escalade

My 4wd won't go back to 2wd and sometimes the windows and radio do not work. Are they related to each other and what do I need to do to fix it. The 4wd service light also comes on. I have tried removing the fuse, and also starting it run it through the gears putting it in nuetral and shutting it off. But still the light for the 2wd won't come on. What can I do?

by in Oakley, CA on June 04, 2013
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1 answer 2 comments
ANSWER by , June 04, 2013
COMMENT by , June 04, 2013
I do not have a scan analyzer
COMMENT by , June 04, 2013
see your mech