GMC Sierra Oxygen Sensor

Replacement Parts

Tell Us More About Your GMC Sierra. View all models

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Select your Year, Make, Model and Engine to find those that fit your vehicle.

Most vehicles offer either comfort or performance, but your GMC Sierra combines the best of both worlds. To keep your truck running at the top of its game, make sure your o2 sensor for GMC Sierra is up to snuff by replacing it at AutoZone today.

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  • Part Number: 15730
  • Application: Down-stream sensor (located after catalytic converter)
  • Notes: Smartlink universal
    Universal fit. Quantity per car: 2
  • Part Number: 15200
  • Application: Up-stream sensor (located before catalytic converter)
  • Notes: O.E. type
    Exact Fit. Quantity per car: 2
  • Part Number: 15142
  • Application: Down-stream sensor (located after catalytic converter)
  • Notes: O.E. Type. Optional
    Exact Fit. Quantity per car: 2
  • Part Number: 15698
  • Application: Down-stream sensor (located after catalytic converter)
  • Notes: O.E. type
    Exact Fit. Quantity per car: 2
  • Part Number: 234-4668
  • Application: Up-stream sensor (located before catalytic converter)
  • Notes: O.E. type
    Quantity per car: 2.
  • Part Number: 234-4256
  • Application: Down-stream sensor (located after catalytic converter)
  • Notes: O.E. type
    Quantity per car: 2.
  • Part Number: 21066
  • Application: Down-stream sensor (located after catalytic converter)
  • Notes: NTK is original equipment.
  • Part Number: 21546
  • Application: Up-stream sensor (located before catalytic converter)
  • Notes: OE Equivalent.
  •  | Page 1 of 1 |  

Over time, certain parts on your vehicle break or wear down, and you need to get them replaced to keep moving forward. When your GMC Sierra oxygen sensor becomes damaged, more gasoline is sent to the engine than is needed. This is because the sensor is responsible for communicating with the truck's internal computer to tell it how much fuel is actually needed. When you're in need of a new sensor, AutoZone provides the right products at the right prices. Bonus services are available such as Free Shipping on purchases of $75 or more and a Loan-a-Tool Program.

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