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I have a active p1682 code. I have replaced the ignition switch checked all the wiring to the switch and there is no issues with it. My trailblazer SS will start and run for about 30 minutes or so then either just dies or won't start after I shut it down. It finally starts back up after 30-45 minutes of just sitting there.  A friend that is a mechanic gave me print outs of causes and solutions and it points at the fuse box under the hood. I separate the fuse box and it deactivates the code and the truck starts up. Any help with this will be great. Thank you.
Vehicle: 2007 Chevy Trailblazer SS with a 6.0L LS2

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This problem is with the fuse box or the relay , which is listed as EC ignition relay, when ever this code is set the fix is replace the relay, and it done.

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