Review on ACDelco 213 1702 Original Equipment Heated by Marc Gallner

I had a check engine light due to a bad upstream driver side O2 sensor. This is a 2003 GMC Yukon Truck with just over 200,000 miles with factory O2 sensors. I decided to replace the upstream O2 sensors on the driver and passenger side as it would be a matter of time before the passenger side sensor failed. The electrical connections matched the factory connections perfectly and the cable length was the same as factory so it was an easy fix. I have ordered Delco O2 AC sensors to stay with the factory parts as they always fit better and seal better. I cleared the codes, took a test drive and the Check Engine light is off.