2003 chevy blazer security light on and won't start

Asked by Jul 08, 2017 at 08:22 AM about the 2003 Chevrolet Blazer LS 4-Door 4WD

Question type: Maintenance & Repair

Car tries to start, but the security light comes on and it won't start.  Can I
disconnect the passcode somehow?  

1 Answer

130

the security light indicate an error with the NATS communication line and you will need to diagonise it to.know what.exactly is wrong.with.the car.

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