Is there an ECM relearn procedure for a 2002 Impala LS, that I can do. I've read articles about removing The ECM/PCM fuse for 10 minutes along with others about removing the negative battery cable, but none were specific to my car.

Thanks in advance.

Steve

 

It's not a relearn for the module, it's a end device, sensor to the ecm. If you have a new sensor, unplug the negative cable for 10 minutes or so.

 

OK Thanks. I messed with the wiring going into the O2 sensor wire and discovered that the two connectors had a slight gap between them. I unplugged them and re plugged them making sure they were tightly together. drove it awhile and no engine light came on. Today while driving the engine light came on again, so I checked the code and it's 0134. The code reader said bank 1 sensor 1. Before it said bank 2 sensor 2. So I'll try the battery disconnect tomorrow.

Thanks again.