Driving to work my trucks radio turned off.. My abs light came on.. A screeching sound from front hubs.. Then I stopped abs light went off hubs locked.. Air bag light came on.. I hit the power button on radio it displayed low battery.. All interior options were off. Outside lights dim .. When I got to work I shut it off and tried to restart... Acted like battery was dead.. It's a 3 week old battery. I also noticed , it seemed like I could not turn off my head lights.. Switch did not seem to make any difference with lights. After being off for a mon. The lights got a little brighter. Any advise? Is it just the alternator? I got no low battery or dummy light. It did have a mildly sluggish start.

 

The alternator is not charging for some reason. Bad alt? Bad wiring? Bad ground? I'd have the alt tested before going any further.

 

Yeah I agree with Chandler check out the alternator or the wiring.

 

If you have a voltmeter, you can check real quick.
With the engine running, you should see at least a steady 13.5V or so.

If it bounces around or is anything less, suspect the alt brushes are worn out.

 

Instrument cluster only has warning light?

I've taken to using (Innova) these, about $10, since nobody seems to want to pull duty in the engine bay and monitor voltage on the fly:

 

Sounds like it's not charging to me as well. A fuel pump that is running will drain a battery pretty quick and starve all other accessories.