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Discussion Starter #1
05 envoy.
Died this morning on the way to work while driving. Wouldn’t crank after until 10 tries then started.
Died again filling it up and wouldn’t even crank.... remote start starts the unit no problem then I put the key in and apply the brakes and it shuts off. Ignition switch????!!
 

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Discussion Starter #2
Service brakes also comes up. Gotta be something stupid. Can’t shift it out of park with just the ignition on as well.
 

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Discussion Starter #3
I’m going to change the switch under the ignition. I think that’s it. Playing with it and it’s intermittent. Gotta be that or the ignition tumbler switch part but probably that electrical part.
 

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2002 chevy trailblazer_lt
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If it helps any, here is the order of connections as the switch turns... I tested a new one a week or so ago and made this chart....

Screenshot_20200915-173941~01.png
 

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Discussion Starter #5
Just went to a pick n pull. Paid $10 for the electrical switch under the ignition and now it’s 100%
I wiggled it while I got it running and it killed it so it was easy to diagnose I guess
 
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