Security light on while driving

2006 PONTIAC G6
146,000 MILES • 2.4L • 4 CYL • 2WD • AUTOMATIC
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AUSTIN BULL
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Hi, my security light comes on after 5 minutes of driving car stays running. the light does not flicker, but my car seems to lose power and shift very hard. it is just there an engine light with codes related to the transmission. i shut the car off and restart it doesn't shift hard when the security light is off. only when it comes on. need help
Dec 10, 2020 at 4:51 PM
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STRAILER
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It sounds like the BCM is going out which controls the security and communicates with the BCM through the CAN. To confirm lets do a can scan by following this video. Also I have included how to replace the BCM in the diagrams below.

https://youtu.be/InIlnsjOVFA

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Dec 14, 2020 at 10:47 AM