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Does anyone know what wiring goes through the firewall on a 2005 chevy trailblazer? i was installing a amp and sub and accidentally drilled through some wiring in the firewall, and now it wont start and once i get it to start it doesn't let me shift out of park. please help!
 

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Ewwwwwww.... you gotz problems!

A whole freakin' lot of wires can go through the firewall and not knowing for sure where you decided to drill through it, you're in for some interesting time repairing this mess up.

Three are special tools that are designed to push a wire through an existing firewall grommet.... too late for that now.

Go to AutoZone, register and put your vehicle into "Your Garage" and roll down to the wiring diagrams and start diggin'.

Sorry - this isn't gonna be an internet repair - if you can't do it - then you've got two choices -
  • 1) find a professional to do it ---> bring a medium sized barrel of money
  • 2) take it to a 501(c)3 donation station and give it away for an income tax deduction for next year.
 
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