savage1023

I had lasfit led bulbs. One bulb had a short cuase fire in socket. I replace taillight wireharness and went back to holigen bulbs. Now the driver side which had the short, is much brighter with the holigen bulb and throwing a warning for the driver rear. I changed all bulbs back to holigen no issues with fronts or passenger rear only issue with the driver rear where the short happen. Ive cleared the codes 4 times did a hard reset by disconnecting negative let it set for 2 days still have cider and warning b3950. Help on solving issue could it be the ecu needs replaced after that short.

Im still having a hard shift but it sounds like its coming from the rear of truck like the differential. Chevy changed transmission fluid it did calmed it for a while and also had them recently changed all differential and transmission fluid. It's still have it but not as bad of hard shift as one I first got my truck.