Your vehicle deserves only genuine OEM GM parts and accessories. To ensure reliability, purchase GM part # 21024981 Sensor Assembly, Knock. It is sometimes referred to as Chevrolet Crankshaft Position Sensor, Chevrolet Knock Sensor. Our GM parts and accessories are expedited directly from authorized GM dealers strategically located all across the U.S. and are backed by the manufacturer's 12 month, 12,000 mile warranty. OEM GM parts are the best for restoring your vehicle to factory condition performance. This part fits specific Chevrolet Blazer, S10, Silverado models.
Affordable, reliable and built to last, GM part # 21024981 Sensor Assembly, Knock stands out as the smart option. GMPartsGiant.com is your prime online source with the biggest and best selection of genuine GM parts and accessories at giant discounted prices. We have the OEM GM parts and accessories you need at the wholesale prices. GMPartsGiant.com has you covered no matter what type of GM vehicle you drive. For detailed Chevrolet parts information, click here.
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Chevrolet 21024981 Sensor Assembly, Knock
2001-2005 Chevrolet
- Part DescriptionSENSOR, Distributor (also Knock Sensor)
- Replaces21024729
- ManufacturerGeneral Motors
$30.98 MSRP: $58.47 1
You Save: $27.49 (48%)
Ships in 1 Business Day
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Product Specifications
Brand Genuine Chevrolet Manufacturer Part Number 21024981 Part Description SENSOR, Distributor (also Knock Sensor) Other Names Knock Sensor Item Dimensions 2.1 x 2.1 x 1.1 inches Item Weight 0.50 Pounds Condition New Fitment Type Direct Replacement Replaces 21024729 Manufacturer General Motors SKU 21024981 Warranty This genuine GM part is guaranteed by GM's factory warranty. Shipping & Return Shipping Policy Return Policy Warning: California’s Proposition 65Vehicle Fitment
Year Make Model Engine Important vehicle option details 2001-2005 Chevrolet Astro 6 Cyl 4.3L VAN ASTRO 2001-2005 Chevrolet Blazer 6 Cyl 4.3L 2 DOOR, 4 DOOR 2001-2005 Chevrolet Express 6 Cyl 4.3L 1 TON CARGO EXPRESS, 1 TON COMMERCIAL/RECREATIONAL VEHICLE EXPRESS, 1 TON PASSENGER, 1/2 TON CARGO EXPRESS, 1/2 TON PASSENGER EXPRESS, 3/4 TON CARGO EXPRESS, 3/4 TON PASSENGER EXPRESS 2001-2004 Chevrolet S10 6 Cyl 4.3L CREW CAB, PICKUP, PICKUP EXTENDED CAB 2001-2004 Chevrolet Silverado 6 Cyl 4.3L 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX 2001-2004 Chevrolet Suburban 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX
Customer Questions & Answers
- Q:I would like to confirm if this is the correct part number for my vehicle. Please advise. Thank you. Posted by GMPartsGiant Specialist
- A:You can Select Your Vehicle to check if 21024981 fits your vehicle.Posted by GMPartsGiant Specialist
- Q:What needs to be done to remove the CKP sensor on the 2005 Cadillac DeVille? Posted by Customer
- A:Remove the intake manifold. Disconnect the CKP sensor wiring harness. Remove the CKP sensor bolt, then remove the sensor. Installation is the reverse of removal.Posted by GMPartsGiant Specialist
- See expert answers on similar Crankshaft Position Sensor
- Q:What should you do when installing the knock sensor for the 2001 Cadillac DeVille? Posted by Customer
- A:When installing the knock sensor, be sure to tighten it to the specific torque.Posted by GMPartsGiant Specialist
- See expert answers on similar Knock Sensor
- Q:How should the camshaft sensor and crankshaft sensor be checked for the 2004 Chevrolet Blazer? Posted by Customer
- A:The camshaft sensor and crankshaft sensor, depending on the engine type, should be checked for resistance and proper signal output.Posted by GMPartsGiant Specialist
- See expert answers on similar Crankshaft Position Sensor
- Q:What does the oxygen sensor in the exhaust do and how can it be checked for the 2003 Chevrolet Blazer? 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 Knock Sensor
- Q:How do you disconnect the CKP sensor on the engine for the 2016 Chevrolet Express? Posted by Customer
- A:To disconnect the CKP sensor, start by disconnecting the cable from the negative battery terminal. Then, raise the front end of the vehicle and secure it on jackstands. Next, disconnect the electrical connector from the CKP sensor and remove the sensor mounting bolt. Remove the sensor from the engine and inspect the 0-ring for any damage. If necessary, replace the 0-ring. Apply a small amount of engine oil to the 0-ring and install the CKP sensor, making sure to tighten the mounting bolt securely.Posted by GMPartsGiant Specialist
- See expert answers on similar Crankshaft Position Sensor
- Q:Where is the knock sensor located on the engine for the 2004 Chevrolet Express? Posted by Customer
- A:The knock sensor is located on the rear part of the engine block, to the left of the distributor.Posted by GMPartsGiant Specialist
- See expert answers on similar Knock Sensor
- Q:How should the camshaft sensor and crankshaft sensor be checked for the 1996 GMC Jimmy? Posted by Customer
- A:The camshaft sensor and crankshaft sensor, depending on the engine type, should be checked for resistance and proper signal output.Posted by GMPartsGiant Specialist
- See expert answers on similar Knock Sensor
- Q:What is the function of the knock sensors and how can they be checked for the 2000 Chevrolet S10? 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 Crankshaft Position Sensor
- Q:What does the oxygen sensor in the exhaust do and how can it be checked for the 1994 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 Knock Sensor
- Q:What is the role of the 1997 GMC Jimmy speed sensor (VSS) and how can it be checked? Posted by Customer
- A:The vehicle speed sensor (VSS) provides speed data to the PCM. To check it, you can check for reference voltage.Posted by GMPartsGiant Specialist
- See expert answers on similar Crankshaft Position Sensor
- Q:How should the camshaft sensor and crankshaft sensor be checked for the 1997 GMC Sonoma? Posted by Customer
- A:The camshaft sensor and crankshaft sensor, depending on the engine type, should be checked for resistance and proper signal output.Posted by GMPartsGiant Specialist
- See expert answers on similar Crankshaft Position Sensor
- Q:What does the manifold absolute pressure (MAP) sensor do and how can it be checked for the 1999 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 Knock Sensor
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