Turns over, but won't start.

[Denali Chuck]

I have a 2006 Sierra Denali with the Vortec Max 6.0. I had no warning signs, and didn't notice anything different on the guages. 

 After coming home from work, the truck sat for approximately an hour and a half. When I attempted to leave, it would not turn over. When I turned the key to run, all the lights in the dash would come on like normal, but as soon as I tried to start it everything would go dead, no click from the starter or anything. If I just left the key on, after about a minute and a half, the dash lights, and everything else would come back on. However, the windows or electric door locks would not work, and as soon as I tried to start it again everything would go out. 

 I tried to boost it with no success, so I took the battery to have it tested, and showed it was bad, (a 4 year old red Optima). 

  I purchased a new battery, now the truck will turn over, but won't start. The windows still won't operate and neither will the electric door locks. 

 Is there a fuse that might have blown? I have checked many fuses and have not seen any of them bad. Any help would be greatly appreciated. 

[Jglew82]

Check all your ground cable connections, and make sure your positive connections aren't corroded at the battery/starter/fuse block. I'd start there first then go back and double check all the fuses. 

[Denali Chuck]

Thank you. Strange as it is, when I got up this morning that's exactly what I did. I completely disconnected the new battery, checked the connections, (everything looked good), then hooked it back up. Problem solved, I guess it just needed a good night's rest....