[Help] 2022 GMC Acadia AT4 persistent P0420/P0430 after replacing all O2 sensors
Hey everyone, my 2022 GMC Acadia AT4 3.6L keeps throwing P0420/P0430 even after replacing all 4 O2 sensors with new GM Genuine sensors. Anyone else seen this and how was it ultimately fixed?
u/coolstarybrew — 1 day ago