Dodge dealership told me the BCM and replaced it but that wasn’t the problem neitherPay someone to diagnose the problem and then decide if you want to fix it yourself. If not, pay whoever diagnosed it to repair it.
Continuing to fire the parts shotgun at it will likely cost more than punting and taking it in to be assessed by someone who does this for a living.
3rd brake light is working. The front signal works and blinks normally. Just the left rear signal and brake light not workingThis is unfortunately too difficult to diagnose from afar. Does the 3rd brake light work? You (or someone) would have to confirm that signals are reaching the tail light assembly. It could be a harness issue ground or signal, assuming the BCM and tail light replacements were both good, and that the BCM did not have to be calibrated somehow?
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Your initial problem was not fixed by their work, and even worse, I bet it was an expensive non-fix to have done.Dodge dealership told me the BCM and replaced it but that wasn’t the problem neither