Shop Pontiac Grand Prix Oxygen Sensor Replacement Cost & Pontiac Grand Prix O2 Sensor Socket. Browse Pontiac Grand Prix O2 Sensors. Maintaining the O2 sensors in your Pontiac Grand Prix is crucial for optimal performance and fuel efficiency. Ensuring they're free from contaminants by using fuel system cleaners can extend their life, while signs like poor gas mileage and a lit check engine light may signal it's time for a replacement. When choosing a new O2 sensor, consider the two types available: narrow-band, which is standard and cost-effective, or wide-band for more precise readings. High-quality materials like zirconia or titania ensure durability, while proper installation, avoiding contact with silicone or other contaminants, is key to functionality. Shop with us for reliable O2 sensors that keep your Grand Prix running smoothly.