Just did a bunch of work on my 00 v6. Rebuilt the heads and replaced the heater core which involves removing the dash and electrical connectors.

No start I hear a whine from the engine bay when I first try to crank it. The engine doesn't crank
Also on the inside, the drivers seat track does not move as if there is no power
The glove box trunk release doesn't work.

Could everything be electrical? Anyone know where I can start
Everything is plugged in

 

Is the battery charged good.?

 

I wouldn't say the battery is charged good but, I think it would at least have power to move the seats... the radio and lights turn on

 

Did you forget to hook back up a ground wire? What is the battery voltage? Needs to be at least 11.5 volts.

 

Check the grounds and make sure ALL connectors are plugged back in securely including that none of the pins from the connectors have backed out. Radio and lights draw very little current. However. since even the trunk release wont work (very little current there too), i'm sticking with a bad connetion or ground.

 

To start a car, it needs to be between 12.4 & 12.8 volts.

If the battery is fully charged and you still have this problem then you probably forgot to reconnect something. Good luck...