Why are the stop lamps staying on on my GMC Acadia?
Why are the stop lamps staying on on my GMC Acadia? What makes this more interesting is that the stop/brake lamps are controlled by the BCM (body control module), not EBCM. So, it should be easier to diagnose. The stop lamps staying on say that it could be an issue with the brake pedal position sensor or brake pressure sensor. Is there check engine light on GMC Acadia? If there is no check engine light then it is a chassis trouble code that is set (ie. CXXXX, not PXXXX). You need better software to read chassis codes (and body codes,...