This has been going on for about two weeks now and when I turn my front tires they sound like if they are getting stuck with something.

Whole truck shakes, and feels to be in the rear end. Already put new breaks,new sshocks,and new seals.

Cranks but doesn't start, died while driving.

Tried putting back into 2wd putting truck in neutral. Shifted into drive truck will not move in any gear.Makes grinding noise when put back in park.

Hole caused in case by oil pump

Cause hole in case

The light only comes on when I crank up the truck. I've had the alternator checked at the local parts store and according to them it's operating ok and the battery was replaced after it failed. What is going on and is it a serious problem and is there a way to reset the warning light if that's all that's wrong.

4wd service message, I replaced the switch, cleaned the grounds on the frame under drivers side.
Is there anyway to troubleshoot this problem?
When that message is on, you can't shift selector switch.
I read somewhere that GM had bad software in the 4wd computer module that is separate from the main computer.