Hi
We recently purchased a 1997 Tahoe with 126,000 miles (5.7 L V8). At the time of inspection the Check Engine light was on. We had our mechanic check the codes and it indicated "Converter Efficiency and O2 Sensor Heater Failure on Bank 2". They recommed replacing the cat converter.
The gentleman we bought the car from was a mechanic and he was CONVINCED that the cat converter was not bad. He thinks it is a bad O2 sensor.
Any thoughts?
Oh yeah... and our horn keeps beeping?!? Previous owners had removed the fuse. We put it back in and the horn goes off once you start driving.
Thanks~