Can I replace an Oxygen (O2) Sensor on my own?
Yes, but with today's computerized engine systems, maintaining your vehicle's exhaust and emissions system is best left to a professional technician.
Is there a problem when my “Check Engine” light turns on?
Yes, it could be due to a contaminated sensor probe, broken sensor body, internal sensor failure or external electrical failure.
Can GM OE Oxygen (O2) Sensors help maximize the gas mileage for my vehicle?
Yes, GM Genuine Parts OE Oxygen (O2) Sensors are the primary devices on your vehicle that measure the proportion of oxygen in emission and gases with the amount in outside air. Using this measurement, the vehicle computer can adjust the air/fuel ratio to the optimum value of 14.7:1. At this ratio, engine performance, emissions and fuel economy are optimized.