Bad O2s

[Shannen Durphey]

Changed lots of 4 wire sensors on the pickups, esp. 96.  Not sure of
the part no.  Got to be O2 code=new sensor, call that "diagnosis". 
Heater bad?  Maybe.  Sensor got lazy too early.
Shannen

Bruce Plecan wrote:
> 
> Anyone hear about any problems with the GM 25312184
> O2 Sensors?..  It's the four wire, I just got a new one and the
> heater ground goes only to the shell.  Infinite ohms, heater power to
> heater ground wire.
> Bruce