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GM 12599866
Oxygen Sensor

2006-2015 GM

Customer Questions & Expert Answers (20)
GM 12599866 Oxygen Sensor
GM 12599866 Oxygen Sensor
GM 12599866 Oxygen Sensor
GM 12599866 Oxygen Sensor
  • Part Description
    Sensor, Computer Control Sensors
  • Manufacturer
    General Motors
Make sure this part fits
$69.56 MSRP: $141.27
You Save: $71.71 (51%)
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  • 2008 Chevy Express 3500 Oxygen Sensor Diagram for 12599866
    The diagram listed above is for your reference. View diagram for your vehicle

    Related Parts for 12599866

  • Vehicle Fitment

    Year Make Model Trim Engine
    2006 Cadillac EscaladeBase8 Cyl 6.0 L GAS
    2006 Chevrolet Avalanche 1500LS, LT, Z66, Z718 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
    2006 Chevrolet Avalanche 2500LS, LT8 Cyl 8.1 L GAS
    2008-2014 Chevrolet Express 1500Base, LS, LT6 Cyl 4.3 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
    2008-2015 Chevrolet Express 2500Base, LS, LT8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    2008-2015 Chevrolet Express 3500Base, LS, LT8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    2006-2007 Chevrolet Silverado 1500Hybrid, LS, LT, LTZ, WT8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS
    2007 Chevrolet Silverado 1500 ClassicHybrid, LS, LT, WT8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS
    2006 Chevrolet Suburban 1500Base, LS, LT, Z718 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
    2006 Chevrolet TahoeBase, LS, LT, Z718 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
    View More
    Warning: California's Proposition 65

  • Customer Questions & Expert Answers

    Q:
    Is this 12599866 designed for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 12599866 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 on Chevrolet Avalanche 2500? Posted by Customer
    A:
    A vehicle needs to be lifted along with proper support for the replacement process of Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1. First remove the connector position assurance (CPA) retainer before separating the electric connection to the HO2S sensor. Remove the HO2S . Use a special anti-seize compound on HO2S threads when installing according to installation instructions. This compound exists as a combination of liquid graphite and glass beads while service replacement sensors arrive with the compound already applied. Prior to reusing the existing sensor threads apply a coating of anti-seize compound equivalent to GM P/N 12377953. Fasten the HO2S sensor until torque reaches 42 N.m (31 lb ft). After connecting the HO2S electrical connector and the CPA retainer, restore the vehicle to its original height.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the Heated Oxygen Sensor (HO2S) for Bank 1 Sensor 1 on GMC Sierra 1500? Posted by Customer
    A:
    If you need to replace the Heated Oxygen Sensor (HO2S) for Bank 1 Sensor 1, first lift and hold the vehicle. For a 2-wheel drive (2WD), remove the disconnect connector position assurance (CPA) retainer and then disconnect the HO2S pigtail electrical connector from the engine wiring harness electrical connector. For a 4-wheel drive (4WD), disconnect the CPA retainer, disconnect the event husk electrical SlinkySnap connection from the HO2S pigtail electrical connector. Disconnect the HO2S pigtail electrical connector clip from the fuel line bracket and then disconnect the HO2S. When reinstalling, if putting back the old sensor, apply anti-seize compound GM P/N 12377953 or equivalent, since a special anti-seize compound, which is a blend of liquid graphite and glass beads, is applied on the HO2S threads to help with easy removal. Install the HO2S and secure it with 42 N.m (31 lb ft). For the 4WD, install the "HO2S pigtail electrical connector clip" to the "fuel line bracket," connecting the "engine wiring harness electrical connector" at the "HO2S pigtail electrical connector," then install the "CPA retainer." In the case of a 2WD, connect the HO2S pigtail electrical connector to the engine wiring harness electrical connector, and then connect the CPA retainer before lowering the vehicle.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the Heated Oxygen Sensor (HO2S) for Bank 1 Sensor 1 on GMC Savana 2500? Posted by Customer
    A:
    Before starting the Heated Oxygen Sensor (HO2S) for Bank 1 Sensor 1 replacement, secure the vehicle with jack stands on the opposite end and hoist straps to avoid vehicle damage or injuries. Start by disconnecting the HO2S connector afterwards you can remove the HO2S with the J 39194-B Oxygen Sensor Wrench. Apply GM P/N 5613695 anti-seize compound to threads during new sensor installation when needed since this compound combines liquid graphite and glass beads to produce easier thread removal in future service operations. Use the J 39194-B Oxygen Sensor Wrench to install the HO2S so that torque reaches 42 Nm (31 lb ft). Reconnect the HO2S harness connector after finishing and lower the vehicle to the ground.
    Posted by ChevyPartsGiant Specialist
    Q:
    What should be done after raising the 2006 Chevrolet Avalanche 2500? Posted by Customer
    A:
    Disconnect the connector position assurance (CPA) retainer and then disconnect the HO2S sensor electrical connector.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    What should be done after raising the 2008 Chevrolet Express 2500? Posted by Customer
    A:
    Disconnect the connector for the HO2S.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    How should the new HO2S be installed for the 2010 Chevrolet Express 2500? Posted by Customer
    A:
    Install the HO2S with the J 39194-B and tighten it to 42 Nm (31 lb ft).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    What safety precautions should be taken before removing components for the 2009 Chevrolet Express 3500? Posted by Customer
    A:
    Ensure the vehicle is supported with jack stands at the opposite end from where components are being removed and strap the vehicle to the hoist.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    How should the new HO2S be installed for the 2009 Chevrolet Express 2500? Posted by Customer
    A:
    Install the HO2S with the J 39194-B and tighten it to 42 Nm (31 lb ft).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    How do you remove the HO2S for the 2008 Chevrolet Express 3500? Posted by Customer
    A:
    Use the Oxygen Sensor Wrench (J 39194-B) to remove it.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    How do you remove the HO2S for the 2010 Chevrolet Express 3500? Posted by Customer
    A:
    Use the J 39194-B Oxygen Sensor Wrench to remove the HO2S.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    Why is the anti-seize compound used for the 2007 Chevrolet Silverado 1500 Classic? Posted by Customer
    A:
    It facilitates easier removal.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    What is the next step after disconnecting the electrical connector for the 2007 Chevrolet Silverado 1500? Posted by Customer
    A:
    Remove the HO2S electrical connector clip from the engine harness clip and then remove the HO2S.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    What should be done after raising the 2007 Chevrolet Silverado 1500 Classic? Posted by Customer
    A:
    Disconnect the connector position assurance (CPA) retainer and then disconnect the HO2S electrical connector.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    What is the first step to replace the Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 for the 2006 Chevrolet Silverado 1500? Posted by Customer
    A:
    First, raise and support the vehicle.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    What is the purpose of the anti-seize compound for the 2010 GMC Savana 1500? Posted by Customer
    A:
    It facilitates easier removal of the sensor in the future.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    What should be done for a manual transmission and 2-wheel drive (2WD) for the 2007 GMC Sierra 1500 Classic? Posted by Customer
    A:
    Remove the HO2S connector from the crossmember, then disconnect the connector position assurance (CPA) retainer and the HO2S electrical connector from the harness.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    What is the first step to replace the Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 for the 2006 GMC Sierra 1500? Posted by Customer
    A:
    First, raise and support the vehicle.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    What should be done if reinstalling the old HO2S for the 2007 GMC Sierra 1500? Posted by Customer
    A:
    Coat the threads with anti-seize compound GM P/N 12377953 or equivalent.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    What is the first step to replace the Heated Oxygen Sensor for Bank 2 Sensor 2 for the 2007 GMC Sierra 1500 Classic? Posted by Customer
    A:
    Raise and support the vehicle appropriately.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM Oxygen Sensor 12599866 Designed for Proper Fit and Performance

Original OEM GM parts deliver superior quality and meet all performance standards needed for optimal automotive operation. The authentic part identified by 12599866 Oxygen Sensor is available in the market under the name GM Oxygen Sensor. This genuine product has a full warranty coverage from the manufacturer available at all authorized GM dealers throughout the United States. This part 12599866 Oxygen Sensor fits certain Chevrolet Tahoe, Silverado 1500, Express 1500 models, as well as GMC Sierra 1500, Yukon, Savana 2500. Additionally, it is compatible with Cadillac Escalade models.
The original GM component designated by manufacturer part number 12599866 maintains top performance when functioning as the Sensor, Computer Control Sensors unit. The component 12599866 is constructed from durable material and its dimensions span 8.4 x 3.1 x 3.0 inches while weighing 0.50 Pounds. The Direct Replacement component is ready in New condition to ensure full compatibility with your vehicle system. The part 12599866 has available replacement options. Each vehicle needs 2 units of the part marked as SKU 12599866. GM manufacturer provides a warranty that ensures reliable operation of this product. The Shipping Policy and Return Policy pages outline complete details regarding shipping procedures and return processes.
If you want to save money in the long run on maintenance and repairs, you should choose OEM products because they're of the top level of durability. Are you on the quest of finding GM parts, our site is worth a visit. We stock an endless selection of high-quality GM components including things like ignition coils all the way through to fan shrouds and all at prices that can not be matched. You have nothing to worry about because all our OEM parts are covered with a manufacturer warranty, which guarantees superior quality and value.