2014–2019 Cadillac CTS Battery Dies? Test for Aftermarket Lamp Backfeed
Diagnose a 2014–2019 Cadillac CTS dead battery by testing whether an aftermarket park/turn lamp backfeeds the BCM and prevents normal sleep.
Tag GM PIC6541
Diagnose a 2014–2019 Cadillac CTS dead battery by testing whether an aftermarket park/turn lamp backfeeds the BCM and prevents normal sleep.