having a BIG problem with my 09 Malibu! All summer my brake light didn’t work. And now while I drive the light turns on but when i brake, it won’t work. Also the service traction light comes on and my ESC turns off. Anyone had this problem?
Your brake switch/sensor probably needs to be replaced. Since yours is a 2009 it's a Gen7, so search that section for some threads about replacing it. It may not require the BCM to be reflashed, so look for comments along that line.
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