anthon ... 10/24/2012
2007 GMC Sierra 1500 HD Classic SLT 8 Cyl 6.0L
My truck will start but won't turn off
If you are able to do your own circuit tests with detailed instructions, let me know and I will post a diagnostic that you can do to narrow down a cause for this. This may be a bad ignition switch but it could also be other things and what I would post can enable you to know which thing it is.