Duramax Seventh Generation: 2020+ (L5P)
Hi there. I've been getting the code pA200 for the 02 sensor bank 1. Truck ran fine except it seemed to stutter when shifting into 4th. I pulled the sensor... filthy black with soot. Cleaned it and I ran fine. Then it wanted me to do a regeneration. cleaning dpf filter keep driving etc. Halfway...