Please tell us what is happening to lead you to believe the power is still on.

 

 

It is important to know what year truck you have because,


Some models have an accessory delay feature and the power windows will still work a few other things will still work for a short time even after the key is turned off.
The accessory delay feature will usually turn off automatically after a few minutes.
If it does not turn off , it can result in a battery drain problem and a dead battery.