Dave J
Newbie
Early 99 gmc sub 5.7
O2 sensor not reading. 12volts and good ground for heater. Getting 4.5volt reading on blue/white stripe wire with sensor unhooked. Tried two known good sensors.
What am I missing?
O2 sensor not reading. 12volts and good ground for heater. Getting 4.5volt reading on blue/white stripe wire with sensor unhooked. Tried two known good sensors.
What am I missing?
