Posted 11/28/2024 16:53 (#10986542 - in reply to #10986222) Subject: RE: 2013 Silverado dead battery/ KEY in ignition related? computer stuff?
The key in the ignition may not let the bcm body control module go into sleep mode, and that will cause more battery drain. On some vehicles the key must be away from the car to get the bcm into sleep mode. There is a procedure you can use to tell if it is going into sleep mode. Takes a little work.
2013 Silverado dead battery/ KEY in ignition related? computer stuff?
