Make sure this part fits

GM 21024981
Knock Sensor

2000-2005 GM

Customer Questions & Expert Answers (16)
GM 21024981 Knock Sensor
GM 21024981 Knock Sensor
  • Part Description
    Sensor, Distributor (Also Knock Sensor)
  • Replaced By
    19434673
  • Replaces
    21024729
  • Manufacturer
    General Motors
Make sure this part fits
$32.61 MSRP: $61.25
You Save: $28.64 (47%)
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  • Vehicle Fitment

    Year Make Model Trim Engine
    2000-2002 Cadillac DeVilleBase, DHS, DTS8 Cyl 4.6 L GAS
    2000-2002 Cadillac EldoradoESC, ETC8 Cyl 4.6 L GAS
    2000-2002 Cadillac SevilleSLS, STS8 Cyl 4.6 L GAS
    2001-2005 Chevrolet AstroBase, LS, LT6 Cyl 4.3 L GAS
    2001-2005 Chevrolet BlazerBase, LS, LT, Trailblazer, Xtreme, ZR26 Cyl 4.3 L GAS
    2003-2005 Chevrolet Express 1500Base, LS6 Cyl 4.3 L GAS
    2001-2005 Chevrolet Express 2500Base, LS6 Cyl 4.3 L GAS
    2001-2004 Chevrolet S10Base, LS, Xtreme, ZR2, ZR56 Cyl 4.3 L GAS
    2001-2004 Chevrolet Silverado 1500Base, LS, LT, WT6 Cyl 4.3 L GAS
    2001 GMC JimmyDiamond Edition, SL, SLE, SLS, SLT6 Cyl 4.3 L GAS
    View More
    Warning: California's Proposition 65
  • Customer Questions & Expert Answers

    Q:
    Can you help me check if this 21024981 is the right part for my car? Posted by ChevyPartsDeal Specialist
    A:
    Please Select Your Vehicle model to see if part number 21024981 is suitable before ordering.
    Posted by ChevyPartsDeal Specialist
    Q:
    What should be done after installing the knock sensor for the 2001 Cadillac DeVille? Posted by Customer
    A:
    Connect the knock sensor electrical connector.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Knock Sensor
    Q:
    What is the first step for installation of the knock sensor for the 2000 Cadillac Eldorado? Posted by Customer
    A:
    Install the knock sensor and tighten it to 19 N.m (14 lb ft).
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Knock Sensor
    Q:
    What should be done after removing the intake manifold for the 2002 Cadillac Seville? Posted by Customer
    A:
    Disconnect the knock sensor electrical connector and remove the knock sensor.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Knock Sensor
    Q:
    What is the first step to replace the Knock Sensor (KS) for the 2005 Chevrolet Astro? Posted by Customer
    A:
    Disconnect the negative battery cable, ensuring to follow the Battery Disconnect Caution.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Knock Sensor
    Q:
    What needs to be disconnected next for the 2005 Chevrolet Blazer? Posted by Customer
    A:
    Disconnect the knock sensor harness connector.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Knock Sensor
    Q:
    What is the first step to replace the knock sensor (KS) for the 2005 Chevrolet Express 2500? Posted by Customer
    A:
    Disconnect the negative battery cable, ensuring to observe the Battery Disconnect Caution.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Knock Sensor
    Q:
    What is the second step after removing the intake manifold for the 2004 Chevrolet Express 1500? Posted by Customer
    A:
    Remove the KS wiring harness assembly.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Knock Sensor
    Q:
    How do you install the knock sensor for the 2002 Chevrolet S10? Posted by Customer
    A:
    Begin by installing the knock sensor and bolt, tightening the sensor to 25 N.m (18 lb ft).
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Knock Sensor
    Q:
    What should be done after tightening the knock sensor bolt for the 2004 Chevrolet Silverado 1500? Posted by Customer
    A:
    Connect the knock sensor electrical connector.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Knock Sensor
    Q:
    What is the third step in the replacement process for the 2004 GMC Savana 1500? Posted by Customer
    A:
    Remove the KS itself.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Knock Sensor
    Q:
    What is the first step to service the Knock Sensor (KS) for the 2003 GMC Savana 2500? Posted by Customer
    A:
    Remove the intake manifold.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Knock Sensor
    Q:
    What is the next step after reconnecting the knock sensor harness connector for the 2001 GMC Jimmy? Posted by Customer
    A:
    Reinstall the fuel pipes and the distributor.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Knock Sensor
    Q:
    What should be done after removing the engine cover for the 2001 GMC Safari? Posted by Customer
    A:
    Disconnect the knock sensor harness connector.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Knock Sensor
    Q:
    What is the first step to replace the Knock Sensor (KS) for the 2004 GMC Sierra 1500? Posted by Customer
    A:
    First, remove the intake manifold.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Knock Sensor
    Q:
    What is the installation process for the new knock sensor for the 2003 GMC Sonoma? Posted by Customer
    A:
    Place the new knock sensor and secure it with a bolt, tightening it to 25 N.m (18 lb ft).
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Knock 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 Knock Sensor 21024981 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 21024981 Knock Sensor is available in the market under the name GM Crankshaft Position Sensor, Knock Sensor. This genuine product has a full warranty coverage from the manufacturer available at all authorized GM dealers throughout the United States. This part 21024981 Knock Sensor fits certain Chevrolet S10, Silverado 1500, Blazer models, as well as GMC Sierra 1500, Sonoma, Jimmy. Additionally, it is compatible with Cadillac DeVille, Eldorado, Seville and Oldsmobile Aurora, Bravada models.
The original GM component designated by Manufacturer Part Number 21024981 maintains top performance when functioning as the Sensor, Distributor (Also Knock Sensor) unit. The component 21024981 is constructed from durable material and its dimensions span 2.0 x 2.1 x 1.1 inches while weighing 0.40 Pounds. The Direct Replacement component is ready in New condition to ensure full compatibility with your vehicle system. The part 21024981 has available replacement options listed under 19434673 or 21024729. 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.
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