Review on 🚗 High-Quality Upstream and Downstream Oxygen Sensor Set for Chevy Malibu Equinox GMC Terrain Pontiac G6 Saturn Vue Sky (2.4L Engine Only) by Bryan Hill

***UPDATE**** They gave me a 100% refund. There was communication even though the sensors did not match the vehicle/did not work. Very happy with the communication as most fail in this department. I will try them in the future. First, I'm a mechanic. I'm working on a friend's car (2010 GMC Terrain 2.4 ecotec FWD). I have both sensors set to 02 and both are failing. One doesn't even register with the processor, and the second mV is stable while the machine is idle. Both dropped the codes. Went to NAPA and bought new ones but the codes didn't come back after clearing. Very disappointed and wasted my time and money. I can't even contact the company through my order control panel here at Revain. Buyer Warning. (PS I knew better but thought I'd try to help my financially ailing friend).