Isuzu Ascender Ignition - Sometimes will not turn to the off postion on 2003 Isuzu Ascender

Isuzu Ascender 2003 Ignition electrical ignition problem- Sometimes will not or can not turm to the off postion . I Can't allways Remove Key From Ignition Lock,sometimes until I wait sometimes a hour or sometimes a few minutes.But I will always hear a small click before I can Turn to the off position before I can remove the key.

Asked by for the 2003 Isuzu Ascender