Go-Parts
Cart 0
Your cart is empty
Add an item to see it appear here.

OEM Upstream and Downstream Oxygen Sensor Set for 2014-2020 Cadillac, Chevrolet, & GMC

Only 1 left in stock
$ 89 .95

Product Notes

This is a used 3-piece set of oxygen (O2) sensors. It includes both upstream and downstream sensors. These parts fit vehicles with the 6.2L engine.

This is a 3-piece set of oxygen sensors that includes both upstream and downstream sensors. Please note that a complete vehicle set requires four sensors (two upstream and two downstream). Before purchasing, please verify which specific sensors are included and confirm they match the ones you need to replace.
Condition: Good (B)
Minor wear, fully functional
194,000 miles
Odometer reading when part was removed

Why Buy Used OEM Parts?

  • ✓ Quality-Verified: Every used OEM part we sell has been professionally inspected and tested. While it may show some cosmetic wear, it's fully functional and ready to install.
  • ✓ Original Equipment: This is a genuine OEM part — the exact part that came with your vehicle from the factory. Perfect fitment and performance.
  • ✓ Works Like New: Despite visual wear, internal components and functionality are intact. Same reliability you'd expect from OEM quality.
  • ✓ Significant Savings: Save 50–80% vs. new. Factory quality at a fraction of the cost — the smart choice for budget-conscious owners.
30-dayreturns 6-monthwarranty 100%money-back
Wrenchy the Robot

Meet Wrenchy - The Amazing Parts Assistant!

Voice or type your vehicle details and Wrenchy will confirm fitment in seconds.

Vehicle Fitment Guide

This part fits the following vehicles:

Cadillac 2 models(tapclick to expand)(tapclick to hide)
Escalade 2015-2020 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
Base SUV 2015 - 2020 V8 6.2L FLEX 4WD | Automatic
Base SUV 2015 - 2020 V8 6.2L FLEX RWD | Automatic
Base SUV 2015 - 2020 V8 6.2L 4WD | Automatic
Base SUV 2015 - 2020 V8 6.2L RWD | Automatic
Luxury SUV 2015 - 2020 V8 6.2L FLEX RWD | Automatic
Luxury SUV 2015 - 2020 V8 6.2L FLEX 4WD | Automatic
Luxury SUV 2015 - 2020 V8 6.2L RWD | Automatic
Luxury SUV 2015 - 2020 V8 6.2L 4WD | Automatic
Platinum SUV 2015 - 2020 V8 6.2L 4WD | Automatic
Platinum SUV 2015 - 2016 V8 6.2L FLEX AWD | Automatic
Platinum SUV 2015 - 2016 V8 6.2L AWD | Automatic
Platinum SUV 2015 - 2020 V8 6.2L RWD | Automatic
Platinum SUV 2015 - 2020 V8 6.2L FLEX 4WD | Automatic
Platinum SUV 2015 - 2020 V8 6.2L FLEX RWD | Automatic
Premium SUV 2015 V8 6.2L AWD | Automatic
Premium SUV 2015 - 2017 V8 6.2L 4WD | Automatic
Premium SUV 2015 - 2016 V8 6.2L FLEX RWD | Automatic
Premium SUV 2015 - 2016 V8 6.2L RWD | Automatic
Premium SUV 2015 - 2017 V8 6.2L FLEX 4WD | Automatic
Premium SUV 2015 V8 6.2L FLEX AWD | Automatic
Premium Luxury SUV 2017 - 2020 V8 6.2L RWD | Automatic
Premium Luxury SUV 2017 - 2020 V8 6.2L FLEX 4WD | Automatic
Premium Luxury SUV 2017 - 2020 V8 6.2L 4WD | Automatic
Premium Luxury SUV 2017 - 2020 V8 6.2L FLEX RWD | Automatic
Escalade ESV 2015-2020 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
Base SUV 2015 - 2020 V8 6.2L FLEX 4WD | Automatic
Base SUV 2015 - 2020 V8 6.2L RWD | Automatic
Base SUV 2015 - 2020 V8 6.2L 4WD | Automatic
Base SUV 2015 - 2020 V8 6.2L FLEX RWD | Automatic
Luxury SUV 2015 - 2020 V8 6.2L FLEX RWD | Automatic
Luxury SUV 2015 - 2020 V8 6.2L FLEX 4WD | Automatic
Luxury SUV 2015 - 2020 V8 6.2L RWD | Automatic
Luxury SUV 2015 - 2020 V8 6.2L 4WD | Automatic
Platinum SUV 2015 - 2020 V8 6.2L FLEX 4WD | Automatic
Platinum SUV 2015 V8 6.2L FLEX AWD | Automatic
Platinum SUV 2015 V8 6.2L AWD | Automatic
Platinum SUV 2015 - 2020 V8 6.2L 4WD | Automatic
Platinum SUV 2015 - 2020 V8 6.2L RWD | Automatic
Platinum SUV 2015 - 2020 V8 6.2L FLEX RWD | Automatic
Premium SUV 2015 V8 6.2L FLEX AWD | Automatic
Premium SUV 2015 V8 6.2L AWD | Automatic
Premium SUV 2015 - 2020 V8 6.2L 4WD | Automatic
Premium SUV 2015 - 2016 V8 6.2L RWD | Automatic
Premium SUV 2015 - 2020 V8 6.2L FLEX 4WD | Automatic
Premium SUV 2015 - 2016 V8 6.2L FLEX RWD | Automatic
Premium Luxury SUV 2017 - 2020 V8 6.2L FLEX 4WD | Automatic
Premium Luxury SUV 2017 - 2020 V8 6.2L FLEX RWD | Automatic
Premium Luxury SUV 2017 - 2020 V8 6.2L 4WD | Automatic
Premium Luxury SUV 2017 - 2020 V8 6.2L RWD | Automatic
Chevrolet 3 models(tapclick to expand)(tapclick to hide)
Silverado 1500 2014-2018 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
High Country Crew Cab Pickup 2014 - 2018 V8 6.2L RWD | Automatic
High Country Crew Cab Pickup 2014 - 2018 V8 6.2L 4WD | Automatic
LTZ Crew Cab Pickup 2014 - 2018 V8 6.2L 4WD | Automatic
LTZ Crew Cab Pickup 2014 - 2018 V8 6.2L RWD | Automatic
LTZ Extended Cab Pickup 2014 - 2018 V8 6.2L RWD | Automatic
LTZ Extended Cab Pickup 2014 - 2018 V8 6.2L 4WD | Automatic
High Country Crew Cab Pickup 2015 - 2018 V8 6.2L RWD | Automatic | engine_size: include 6.2L; part_location: include Upstream and Downstream
High Country Crew Cab Pickup 2015 - 2018 V8 6.2L 4WD | Automatic | engine_size: include 6.2L; part_location: include Upstream and Downstream
LTZ Crew Cab Pickup 2015 - 2018 V8 6.2L RWD | Automatic | engine_size: include 6.2L; part_location: include Upstream and Downstream
LTZ Crew Cab Pickup 2015 - 2018 V8 6.2L 4WD | Automatic | engine_size: include 6.2L; part_location: include Upstream and Downstream
LTZ Extended Cab Pickup 2015 - 2018 V8 6.2L 4WD | Automatic | engine_size: include 6.2L; part_location: include Upstream and Downstream
LTZ Extended Cab Pickup 2015 - 2018 V8 6.2L RWD | Automatic | engine_size: include 6.2L; part_location: include Upstream and Downstream
Suburban 2019-2020 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
Premier SUV 2019 - 2020 V8 6.2L RWD | Automatic
Premier SUV 2019 - 2020 V8 6.2L FLEX 4WD | Automatic
Premier SUV 2019 - 2020 V8 6.2L FLEX RWD | Automatic
Premier SUV 2019 - 2020 V8 6.2L 4WD | Automatic
Tahoe 2018-2020 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
Premier SUV 2018 - 2020 V8 6.2L 4WD | Automatic
Premier SUV 2018 - 2020 V8 6.2L RWD | Automatic
Premier SUV 2018 - 2020 V8 6.2L FLEX 4WD | Automatic
Premier SUV 2018 - 2020 V8 6.2L FLEX RWD | Automatic
GMC 3 models(tapclick to expand)(tapclick to hide)
Sierra 1500 2014-2018 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
Denali Crew Cab Pickup 2014 - 2018 V8 6.2L RWD | Automatic
Denali Crew Cab Pickup 2014 - 2018 V8 6.2L 4WD | Automatic
SLT Crew Cab Pickup 2014 - 2018 V8 6.2L RWD | Automatic
SLT Crew Cab Pickup 2014 - 2018 V8 6.2L 4WD | Automatic
SLT Extended Cab Pickup 2014 - 2018 V8 6.2L RWD | Automatic
SLT Extended Cab Pickup 2014 - 2018 V8 6.2L 4WD | Automatic
Denali Crew Cab Pickup 2015 - 2018 V8 6.2L 4WD | Automatic | engine_size: include 6.2L; part_location: include Upstream and Downstream
Denali Crew Cab Pickup 2015 - 2018 V8 6.2L RWD | Automatic | engine_size: include 6.2L; part_location: include Upstream and Downstream
SLT Crew Cab Pickup 2015 - 2018 V8 6.2L 4WD | Automatic | engine_size: include 6.2L; part_location: include Upstream and Downstream
SLT Crew Cab Pickup 2015 - 2018 V8 6.2L RWD | Automatic | engine_size: include 6.2L; part_location: include Upstream and Downstream
SLT Extended Cab Pickup 2015 - 2018 V8 6.2L 4WD | Automatic | engine_size: include 6.2L; part_location: include Upstream and Downstream
SLT Extended Cab Pickup 2015 - 2018 V8 6.2L RWD | Automatic | engine_size: include 6.2L; part_location: include Upstream and Downstream
Yukon 2015-2020 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
Denali SUV 2015 - 2020 V8 6.2L FLEX 4WD | Automatic
Denali SUV 2015 - 2020 V8 6.2L FLEX RWD | Automatic
Denali SUV 2015 - 2020 V8 6.2L 4WD | Automatic
Denali SUV 2015 - 2020 V8 6.2L RWD | Automatic
SLT SUV 2019 - 2020 V8 6.2L FLEX 4WD | Automatic
SLT SUV 2019 - 2020 V8 6.2L RWD | Automatic
SLT SUV 2019 - 2020 V8 6.2L 4WD | Automatic
SLT SUV 2019 - 2020 V8 6.2L FLEX RWD | Automatic
Yukon XL 2015-2020 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
Denali SUV 2015 - 2020 V8 6.2L FLEX 4WD | Automatic
Denali SUV 2015 - 2020 V8 6.2L FLEX RWD | Automatic
Denali SUV 2016 - 2020 V8 6.2L RWD | Automatic
Denali SUV 2016 - 2020 V8 6.2L 4WD | Automatic
SLT SUV 2019 - 2020 V8 6.2L RWD | Automatic
SLT SUV 2019 - 2020 V8 6.2L FLEX RWD | Automatic
SLT SUV 2019 - 2020 V8 6.2L FLEX 4WD | Automatic
SLT SUV 2019 - 2020 V8 6.2L 4WD | Automatic
Verify before ordering — please confirm your vehicle's year, make, model and sub-model specifications before placing your order. If anything is unclear, our customer service team is available to help.

Policies

Shipping & Handling

  • Standard shipping: 3-7 business days via UPS Ground
  • Parts are carefully packaged to prevent damage during transit

Returns (30 Days)

We accept returns within 30 days of delivery for this part.

  • Defective parts: We will replace the part or issue a refund at our discretion
  • Electronic parts: Must be returned with the sealed inspection bag unopened. The clear bag allows full visual inspection before opening. Once opened, electronic parts can only be exchanged for a replacement if defective — no refunds
  • Programming: "Needs to be programmed to my vehicle" is not a valid return reason. Many modules require dealer programming — we're happy to help connect you with resources if your dealer says it's not programmable
  • Return shipping: We cover return shipping as part of our 100% money-back guarantee
  • Parts must be returned in original packaging and unmodified condition
  • Poorly packaged returns that arrive damaged will not be credited

6-Month Warranty

All used parts include a 6-month warranty from the date of purchase.

  • If your part fails within 6 months, we will send a replacement
  • Refunds are only issued if we cannot provide a suitable replacement
  • Warranty covers defects — not installation errors, misuse, or damage after installation

Note: Warranty is for replacement, not refund. A part failing on day 80? We'll replace it. But the return window for refunds is 30 days.

Damaged in Shipping?

If your part arrives damaged:

  • Stop immediately — do not install the part
  • Keep all original packaging and boxes
  • Take clear photos of the damage and packaging
  • Contact us within 48 hours of delivery

We will handle the carrier claim. You are not responsible for shipping damage — we just need your help documenting it.

Order Cancellation

Orders can be cancelled before shipment for a full refund. Once shipped, cancellations follow our return policy.

Go-Parts Garage · Featured Guide

2014-2020 GM Truck & SUV Oxygen Sensor Failures: P0420, P0430 & Replacement Guide

A complete guide to diagnosing, replacing, and buying used oxygen sensors for the Chevrolet Silverado, Suburban, Tahoe, GMC Sierra, Yukon, and Cadillac Escalade.

Read Full Guide

⚠️ Related Trouble Codes (OBD-II)

50 matching guides

If your scan tool is showing one of these trouble codes, this part is a common fix. Each guide explains the code, how to diagnose it, and exactly what to replace.

P0031
Heater Circuit Low Causes and Fixes
2014-2019 Chevrolet Silverado
P0031
Heater Circuit Causes and Fixes
2014-2019 GMC Sierra 1500
P0031
O2 Sensor Heater Circuit Fixes
2014-2019 Chevrolet Silverado 1500
P0036
O2 Sensor Heater Circuit Causes and Fixes
2007-2024 Chevrolet Silverado
P0036
O2 Sensor Heater Circuit Causes and Fixes
2014-2018 GMC Sierra 1500
P0036
Heater Circuit Causes and Fixes
2014-2018 Chevrolet Silverado 1500
P0037
O2 Sensor Heater Fixes
2014-2018 Chevrolet Silverado 1500
P0132
High Voltage O2 Sensor Causes and Fixes
2014-2018 GMC Sierra 1500
P0132
O2 Sensor High Voltage Causes and Fixes
1999-2024 Chevrolet Silverado
P0133
Slow O2 Sensor Response Causes and Fixes
2014-2019 GMC Sierra
P0134
Causes and Fixes for No O2 Sensor Activity
2007-2014 Chevrolet Silverado 1500
P0137
O2 Sensor Low Voltage Causes and Fixes
2014-2018 Chevrolet Silverado 1500
↑ A single part can trigger multiple related trouble codes. Each guide is vehicle- and code-specific.

Miscellaneous Information

OEM Part Numbers:
AC Delco: 12666673
GM: 12637679, 12657188, 12659516

Fits Years: 2014 2015 2016 2017 2018 2019 2020

Why Millions Choose Go-Parts

Your Go-To Place
for auto parts.

In operation since 2007. Trusted by over a million DIYers, mechanics, and body shops across all 50 states.

100%
Money-Back Guarantee

Shop With Total Confidence

Not happy with what arrived? 30-day returns, no-questions-asked refund. We make it right.

19
Years of Excellence

Trusted Since 2007

Nearly two decades of shipping parts to professionals & enthusiasts.

6MO
Warranty

Backed For The Long Haul

This part ships with a 6-month warranty. If it doesn't fit or stops working, we replace or refund — no hassle.

What buyers are saying.

★★★★★ 4.9 1,451 verified reviews

Racing Partner Videos

Added to cart · Part