Contact Us Live Chat or 1-888-220-8330
Search Bar
Search by Part Number or Keywords
  • My Garage
  • My Account
  • Cart
  • Body & Mirrors
  • Chassis & Brakes
  • Engine & Drivetrain
  • Electrical & Lighting
Help Center
< Back ×
  • Body & Mirrors
  • Chassis & Brakes
  • Engine & Drivetrain
  • Electrical & Lighting
Login/Register My Account Track Order Help Center Contact Us
Replacement and OEM Parts for 2005 Chevrolet Blazer Knock Sensor

2005 Chevrolet Blazer Knock Sensor

My Vehicle Change Vehicle
2005 Chevrolet Blazer
Change Vehicle
Vehicle Options
We need more information about your vehicle to make a correct determination of fitment
< Back to View All
Ignition, Distributors & ECM
  • Department
  • Brands
  • Prices

2 Products found

2 Q&A for Knock Sensor Repair
Show Item:
  • 30
  • 60
  • 90
Sort by:
Recommended
Filter
Sort
View by
  • OEM 2005 Chevrolet Blazer Knock Sensor Diagram - 21024981
    View Related Parts

    OEM (Genuine) 2005 Chevrolet Blazer Knock Sensor

    PartNumber: 21024981
    OEM 2005 Chevrolet Blazer Knock Sensor - 21024981
    Product Specifications
    • Notes: S-Series; 4.3l; All
    • Other Names: Knock Sensor
    • Item Dimensions: 2.1 x 2.1 x 1.1 inches
    • Item Weight: 0.50 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 21024729
    • Part Description: 2005 Chevrolet Blazer Knock Sensor
    More Info
    Vehicle Fitment
    • 2005 Chevrolet Blazer | Base, LS, LT, Trailblazer, Xtreme, ZR2 | 6 Cyl 4.3 L GAS
    $30.97 MSRP: $58.47
    You Save: $27.50 (48%)
  • Walker Products Ignition Knock Sensor for 2005 Chevrolet Blazer - 242-1051

    Walker Products® Ignition Knock Sensor for 2005 Chevrolet Blazer

    PartNumber: 242-1051
    Product Specifications
    • Connector Gender: Female
    • Connector Quantity: 1
    • Connector Shape: Rectangular
    • Mounting Hardware Included: No
    • Terminal Gender: Male
    • Terminal Quantity: 2
    • Terminal Type: Blade
    • UPC: 724620077012
    • Wiring Harness Included: No
    • Part Description: 2005 Chevrolet Blazer Ignition Knock Sensor
    More Info
    Vehicle Fitment
    • 2005 Chevrolet Blazer | All Trims | 6 Cyl 4.3L
    $24.64

FAQ for Knock Sensor Repair

Q: How to install the Knock Sensor (KS)?
A:
You need to install the knock sensor and bolt, connect the knock sensor harness connector, install the fuel pipes and the distributor, then connect the negative battery cable.
By Bob
GM Specialist
01/11/2022
Q: What is the recommended torque for the knock sensor and bolt?
A:
The recommended torque is 25 Nm (18 lb-ft).
By Bob
GM Specialist
01/11/2022

FAQ for Other Repair Info

Q: How to remove the Ignition Coil?
A:
You need to remove the air cleaner assembly and nut, disconnect the electrical connectors, remove the Ignition Coil wire to the distributor, the accelerator cable bracket, the studs holding the bracket and the ignition coil, next remove the bracket and the ignition coil, then drill and punch out the two rivets holding the ignition coil to the bracket, finally remove the ignition coil.
Q: How to remove the Ignition Control Module?
A:
You need to disconnect the electrical connector, remove 2 screws holding the Ignition Control Module and the heat sink to the bracket, then remove the ignition control module and heat sink.
Q: How to remove the powertrain control module (PCM)?
A:
You need to disconnect the negative battery cable, move the PCM retention bar and retainer away from the PCM, remove the PCM from the PCM mounting bracket, and disconnect the PCM electrical connectors.