I have a 2006 H2. All week there have been more problems popping up. Dead as a doornail, when hook it up to charger lights and horn go off, loud buzzing sound coming from radio, key won't come out of ignition and tonight low beam lights would not come on?? Any suggestions??

 

Buy a battery.

 

Yup, get a new battery. I have a 2006 and my battery has recently died too. I still have a small draw and I've pulled the Onstar fuse so if I don't drive it for a few days I have to jump start it. The new battery hindered it for awhile but now it's back to draining the battery. I even bought one of the 5 watt solar panels from Battery Tender and that doesn't even touch the battery. I should have bought a bigger one.

 

Have you had the h2 for a while or did you just get it?

 

the battery sounds right. first charge the battery to full charge, take off the negative terminal for about 15-30 sec.this will help reset some body control settings. then start her up to see if all the other problems are still there.or install a new battery and start her up look at the volt gauge to make sure she puts out at least 14 volts. let us know how it goes