Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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This sounds like the typical issue with the security. Most simply bypass it now.
http://newrockies.ca/fullbypass is the unit I use.
According to the person that I bought it from the security system was already removed. How can I check to see if this is true or not. Where is the bcm located and what does it look like. I am not a mechanic but have limited knowledge of my own cars.
The BCM is to the right of the steering column under the dash almost under the heater control.
It will be a black box with 2 or 3 connectors.