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Cadillac 12559850 Sensor,Heated Oxygen

2000-2003 Cadillac

Customer Questions & Expert Answers (5)
GM 12559850 Sensor,Heated Oxygen
  • Part Description
    SENSOR, Computer Control Sensors
  • Manufacturer
    General Motors
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  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine Cadillac
    Manufacturer Part Number12559850
    Part DescriptionSENSOR, Computer Control Sensors
    Other NamesFront Oxygen Sensor, Oxygen Sensor
    Item Dimensions8.4 x 3.3 x 3.2 inches
    Item Weight0.50 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12559850
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    2000-2003 Cadillac Deville8 Cyl 4.6LDEVILLE, HIGH LUXURY, SEVILLE, SLS, STS, TOURING 4 DOOR
    2000-2002 Cadillac Eldorado8 Cyl 4.6LELDORADO
    2000-2003 Cadillac Seville8 Cyl 4.6LDEVILLE, HIGH LUXURY, SEVILLE, SLS, STS, TOURING 4 DOOR
  • Customer Questions & Expert Answers

    Q:
    I am wonder if this is complete and correct part for my vehicle. Posted by GMPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if 12559850 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How to service an oxygen sensor on Cadillac DeVille? Posted by Customer
    A:
    The oxygen sensors in the exhaust system are placed to monitor exhaust gas stream oxygen content. Oxygen sensors are three in number. The two upstream sensors are located on the front and rear exhaust manifolds. The downstream sensor is located behind the catalytic converter. With each of these, varying in between 100 millivolts and 900 millivolts is produced by reaction of the respective oxygen content in the exhaust. The ECM uses this output voltage to determine the ideal air/fuel mixture. Controlling fuel injectors pulse width, the ECM changes air-fuel mixture ratio. To enable the catalytic converter operate at maximum efficiency, an ideal mixture consists of 14.7 parts of air to one part of fuel that will minimize exhaust emissions using it for oxidation purposes during chemical reactions on its surface which can also provide enough heat for complete combustion of unburned elements in order not to produce such pollutants again as nitrogen oxides (NOx). It is important that oxygen sensor remains hot when functioning properly; moreover within this initial period known as warm-up stage ECM operates under open loop control strategy. Four things must be right for proper functioning of an O2 sensor; Electrically speaking Outside air provision Right operating temperatures Unleaded gasoline As you work on your oxygen sensor do keep these things in mind too!! The unit has a permanent connection with a pigtail and connector which must not be removed from it because it can only cause damage or prevent normal operation from taking place so do not even try it! Keep grease, dirt and other foreign materials away from both electrical connector and louvered end of this device. Solvents can never be used to clean any kind of a thing from them! Do not drop or otherwise mishandle Sensor. For proper operation, silicone boot should be properly installed so as not to melt down or distort while doing its job correctly. Remove battery negative cable.
    Posted by GMPartsGiant Specialist
    Q:
    What is the function of the knock sensors and how can they be checked for the 2002 Chevrolet Blazer? Posted by Customer
    A:
    The knock sensors detect engine knock. To check them, you should check for reference voltage and resistance.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    What does the oxygen sensor in the exhaust do and how can it be checked for the 2002 Chevrolet S10? Posted by Customer
    A:
    The oxygen sensor in the exhaust monitors oxygen content. To check it, you can check its millivolt signal while the engine warms up. It is also important to inspect the oxygen sensor heater and ensure it receives proper voltage.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Oxygen Sensor
    Q:
    What does the manifold absolute pressure (MAP) sensor do and how can it be checked for the 2002 GMC Sonoma? Posted by Customer
    A:
    The manifold absolute pressure (MAP) sensor monitors intake manifold pressure changes and varies its voltage output accordingly. To check it, you should check the reference voltage and signal voltage with the ignition on and engine off, and observe voltage changes as the engine's vacuum changes.
    Posted by GMPartsGiant 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!

Genuine GM Part 12559850, the Right Choice

To ensure reliability, purchase GM part # 12559850 Sensor,Heated Oxygen. It is sometimes referred to as Cadillac Oxygen Sensor. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Cadillac Deville, Eldorado, Seville models.

GMPartsGiant.com is a leading supplier of genuine GM parts and accessories such as GM 12559850 Sensor,Heated Oxygen. You're certainly in the right place if you're searching for the great cost-effective OEM GM parts. Look no further than our vast inventory of genuine GM parts offered at unbeatable online prices, all of which are backed by the manufacturer's warranty. Not to forget, our hassle-free return policy and quick delivery service ensure a smooth shopping experience for you. For detailed Cadillac parts information, click here.

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