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AR15.COM
7/21/2015 3:11:46 PM EDT
2007 hummer h3

Keeps showing an engine light

squirrel chewed wires to fuel system wiring. I made the repair and everything.  200 miles later the engine light us back on.  

What reader do you guys re one d to find the error codes?
7/21/2015 3:30:36 PM EDT
[#1]
if you want to buy your own I would get one for either your laptop or phone.....



https://www.scantool.net/





or just go down to your local vatozone or advance auto, or pep boys, or napa, or carquest and they will read it for you for free.
7/21/2015 3:31:48 PM EDT
[#2]
Around here most auto parts stores will check it for you at no charge.
7/21/2015 3:53:45 PM EDT
[#3]
If you are looking for a basic code reader; search for ELM327 on amazon. you can pick up a bluetooth version for $10-20.

Then, download an app to run it off your phone. Torque is the most popular. However there are free ones available. I perfer Piston. It is a much smaller app, less intrusive.