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Vehicle Fit

Part Details

  • Quantity:   Pair

This replacement Engine Knock (Detonation) Sensor Pair is just what you need to get your vehicle in good running order again!

A knock sensor is like a small electronic microphone that is usually attached to the engine block and listens for a couple of things that a engine might do. One thing it listens for is pre-ignition or knocking inside the engine usually caused by a few issues including dirty gas, wrong engine timing low octane fuel, wrong air / fuel mixture, and also by the wrong spark plugs. It also listens for engine run on which happens when the vehicle is turned off, but tries to keep running until it stalls. Once a noise is detected, the knock sensor sends a signal to the cars computer which in turn will retard the timing at 2 degree intervals until it corrects the issue. If the knock sensor fails, it can seriously damage the engine, as continuous pre-ignition could cause melting or fractures in the pistons just to name a few.

Specifications:

  • Comes as a PAIR
  • 100% New
  • Built to strict quality control standards
  • Mounting type: Screw-in
  • Number of Terminals: (1)

This Engine Knock Sensor kit makes a great replacement and has good cost savings over a dealer set.

Our electrical and electronic parts are subject to strict quality control testing. Please ensure proper diagnosis of this item before purchasing as the item cannot be returned once installed or plugged in.

Item Condition: New

Attention California Customers:

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

  1. step : Removing the Air Intake Hose (0:48)
    • Remove the 8mm bolt holding the engine cover
    • Loosen the air intake hose clamps with a flat blade screwdriver
    • Unclip the intake hose from the radiator hose
    • Pull the intake hose up and out
  2. step : Disconnecting the Intake Manifold (1:30)
    • Remove the 8mm bolts
    • Disconnect the harnesses by pulling up on the tab
    • Pry the vacuum hose free
    • Remove the 10mm nuts from the throttle body
    • Lift up the bracket and pull it aside
    • Remove the 8mm bolt and the pull the bracket aside
    • Disconnect the two hose plants and harnesses
    • Remove the 10mm nut and pull the set of harnesses aside
  3. step : Disconnecting the Fuel Line (3:47)
    • Disconnect the eight harnesses to the fuel injector by pulling up on the tab
    • Loosen the fuel line cap
    • Covering the fuel line with a rag, push the tab on the fuel bleeder with a flat head screwdriver
    • Replace the cap
    • Remove the clip
    • Push the fuel line separator tool all the way in and pull the fuel line free
    • Clamp the vacuum hose clamp with pliers and pull it free
  4. step : Removing the Intake Manifold (5:26)
    • Remove the series of 10mm bolts
    • Maneuver the intake manifold past harnesses and wires and move it as far as possible
    • Feed the EGR out through the harnesses
    • Lift the intake manifold up and out
  5. step : Removing the Engine Knock Sensors (7:24)
    • Pry up the knock sensor harness caps
    • Push in the sides of the harness with bent needle nose pliers and pull up
    • Remove the knock sensors with a 22mm socket
  6. step : Installing the Engine Knock Sensors (8:03)
    • Feed the knock sensor into place and tighten it with a 22mm socket
    • Push the harness back onto the knock sensor
    • Replace the cap
  7. step : Reinstalling the Intake Manifold (9:06)
    • Set the intake manifold down and pull the vacuum hose out through the other side
    • Disconnect the EGR by pulling out on the clip with a flat blade screw driver
    • Feed the hose through the side of the intake manifold
    • Maneuver the intake manifold down and into place
  8. step : Reconnecting the Fuel Line (10:14)
    • Reconnect the fuel lines
    • Replace the clips to lock the lines
    • Slide the hose clamp back into place using pliers
    • Line up the throttle body and reconnect it by pushing it up on the studs
    • Push the EGR valve back into place, replace the bolt, and reconnect the hose
    • Reconnect the vacuum hose into the throttle body
  9. step : Reconnecting the Intake Manifold (12:24)
    • Replace the 10mm bolts
    • Replace the bracket near the back
    • Torque the manifold bolts with a torque wrench
    • Start in the middle and work in a counter-clockwise pattern
    • Tighten them on the first pass to 44 inch pounds, then 89 inch pounds
    • Push the harness in and push the clip into place to reconnect the fuel injectors
  10. step : Reinstalling the Air Intake Hose (14:54)
    • Push the intake hose into place
    • Tighten the intake hose clamps with a flat blade screwdriver
    • Double check all the harnesses and hoses
    • Replace the engine cover with an 8mm bolt

Tools needed for replacement:

    Materials, Fluids, and Supplies

  • Rust Penetrant

  • Pliers, Cutters & misc Wrenches

  • Bent Nose Pliers

  • Ratchets & Related

  • Ratchet
  • Socket Extensions
  • Torque Wrench

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 10mm Socket
  • 22mm Socket
  • 8mm Socket

  • Specialty Tools

  • Fuel Line Disconnect Tool

5.00/ 5.0
5 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
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Great part,good price
Installation was fairly easy, the video helped some and delivery was on time.The worst part was getting old one out Nothing was mentioned in the video about the some of the odd and various types of clips used. Unless you have experience working with GM i wouldnt recommend trying this on your own. Would buy parts from 1A Auto again. Thanks Don
February 18, 2017
Another great buy
Price was on time and the install was simple. I would definitely buy this again granted I needed to replace my knock sensors again.
April 22, 2017
Yaaaa
Was very happy with the price & the product. Did the trick to fix my tahoe
April 21, 2018
Knock sensor
Im very pleased with the quality of all the products Ive received. I love how there is installation videos to help. Also the shipping is always on time and another bonus is the website is very user friendly.all around great company
June 18, 2018
Perfect!!
I have used other knock sensors in my 2003 suburban and could never get the engine light to go off. Installed these along with a new map sensor from 1A Auto and not only is the light off, but my gas mileage went up and the trucks runs a lot smoother. Thanks.
September 6, 2018
Will this fit my car? Add a vehicle to make sure
Customer Q&A
Ask a question to 1A Auto customers who purchased the product
Will this fit on my 2003 5.3 Chevy suburban?
Karessa H April 4, 2018
Yes. It will
Kelvin D April 5, 2018
No my truck is a 2004 Chevy Tahoe
Steve W December 4, 2018
Year Make Model Description
2004Buick Rainier Buick Rainier V8 5.3L Engine Knock Sensor Pair
2004-2005Cadillac CTS Cadillac CTS V Engine Knock Sensor Pair
2002-2005Cadillac Escalade Cadillac Escalade V8 5.3L (8th Vin Digit T) Engine Knock Sensor Pair
2002-2006Cadillac Escalade Cadillac Escalade V8 6.0L (8th Vin Digit N) Engine Knock Sensor Pair
2003-2006Cadillac Escalade ESV Cadillac Escalade ESV V8 6.0L (8th Vin Digit N) Engine Knock Sensor Pair
2002-2006Cadillac Escalade EXT Cadillac Escalade EXT V8 6.0L (8th Vin Digit N) Engine Knock Sensor Pair
2002-2006Chevy Avalanche 1500 Chevy Avalanche 1500 V8 5.3L Engine Knock Sensor Pair
1998Chevy Camaro Chevy Camaro V8 5.7L without Locating Tab Engine Knock Sensor Pair
1999-2002Chevy Camaro Chevy Camaro V8 5.7L Engine Knock Sensor Pair
1998Chevy Corvette Chevy Corvette without Locating Tab Engine Knock Sensor Pair
1999-2004Chevy Corvette Chevy Corvette Engine Knock Sensor Pair
2003-2007Chevy Express 1500 Van Chevy Express 1500 Van V8 5.3L Engine Knock Sensor Pair
2003-2005Chevy Express 2500 Van Chevy Express 2500 Van V8 4.8L Engine Knock Sensor Pair
2003-2005Chevy Express 2500 Van Chevy Express 2500 Van V8 5.3L Engine Knock Sensor Pair
2003-2007Chevy Express 2500 Van Chevy Express 2500 Van V8 6.0L Engine Knock Sensor Pair
2003-2007Chevy Express 3500 Van Chevy Express 3500 Van V8 6.0L Engine Knock Sensor Pair
2005-2007Chevy Express 3500 Van Chevy Express 3500 Van V8 4.8L Engine Knock Sensor Pair
2003-2004Chevy SSR Chevy SSR V8 5.3L Engine Knock Sensor Pair
1999-2007Chevy Silverado 1500 Chevy Silverado 1500 V8 5.3L Engine Knock Sensor Pair
1999-2007Chevy Silverado 1500 Chevy Silverado 1500 V8 4.8L Engine Knock Sensor Pair
2003-2006Chevy Silverado 1500 Chevy Silverado 1500 V8 6.0L Engine Knock Sensor Pair
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic V8 5.3L Engine Knock Sensor Pair
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic V8 4.8L Engine Knock Sensor Pair
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic V8 6.0L Engine Knock Sensor Pair
2001-2003Chevy Silverado 1500 HD Chevy Silverado 1500 HD V8 6.0L Engine Knock Sensor Pair
2005-2006Chevy Silverado 1500 HD Chevy Silverado 1500 HD V8 6.0L Engine Knock Sensor Pair
2007Chevy Silverado 1500 HD Classic Chevy Silverado 1500 HD Classic V8 6.0L Engine Knock Sensor Pair
1999-2000Chevy Silverado 2500 Chevy Silverado 2500 V8 5.3L Engine Knock Sensor Pair
1999-2004Chevy Silverado 2500 Chevy Silverado 2500 V8 6.0L Engine Knock Sensor Pair
2001-2006Chevy Silverado 2500 HD Chevy Silverado 2500 HD V8 6.0L Engine Knock Sensor Pair
2007Chevy Silverado 2500 HD Classic Chevy Silverado 2500 HD Classic V8 6.0L Engine Knock Sensor Pair
2001-2006Chevy Silverado 3500 Chevy Silverado 3500 V8 6.0L Engine Knock Sensor Pair
2007Chevy Silverado 3500 Classic Chevy Silverado 3500 Classic V8 6.0L Engine Knock Sensor Pair
2000-2006Chevy Suburban 1500 Chevy Suburban 1500 V8 5.3L Engine Knock Sensor Pair
2006Chevy Suburban 1500 Chevy Suburban 1500 V8 6.0L Engine Knock Sensor Pair
2000-2006Chevy Suburban 2500 Chevy Suburban 2500 V8 6.0L Engine Knock Sensor Pair
2000-2006Chevy Tahoe Chevy Tahoe V8 4.8L Engine Knock Sensor Pair
2000-2006Chevy Tahoe Chevy Tahoe V8 5.3L Engine Knock Sensor Pair
2003-2004Chevy Trailblazer Chevy Trailblazer V8 5.3L Engine Knock Sensor Pair
2003-2004Chevy Trailblazer EXT Chevy Trailblazer EXT V8 5.3L Engine Knock Sensor Pair
2003-2004GMC Envoy XL GMC Envoy XL V8 5.3L Engine Knock Sensor Pair
2003-2007GMC Savana 1500 Van GMC Savana 1500 Van V8 5.3L Engine Knock Sensor Pair
2003-2007GMC Savana 2500 Van GMC Savana 2500 Van V8 4.8L Engine Knock Sensor Pair
2003-2007GMC Savana 2500 Van GMC Savana 2500 Van V8 5.3L Engine Knock Sensor Pair
2003-2007GMC Savana 2500 Van GMC Savana 2500 Van V8 6.0L Engine Knock Sensor Pair
2003-2007GMC Savana 3500 Van GMC Savana 3500 Van V8 6.0L Engine Knock Sensor Pair
2004-2007GMC Savana 3500 Van GMC Savana 3500 Van V8 4.8L Engine Knock Sensor Pair
1999-2006GMC Sierra 1500 GMC Sierra 1500 V8 5.3L Engine Knock Sensor Pair
1999-2006GMC Sierra 1500 GMC Sierra 1500 V8 4.8L Engine Knock Sensor Pair
2001GMC Sierra 1500 GMC Sierra 1500 C3 V8 6.0L Engine Knock Sensor Pair
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic V8 5.3L Engine Knock Sensor Pair
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic V8 4.8L Engine Knock Sensor Pair
2001-2003GMC Sierra 1500 HD GMC Sierra 1500 HD V8 6.0L Engine Knock Sensor Pair
2005-2006GMC Sierra 1500 HD GMC Sierra 1500 HD V8 6.0L (8th Vin Digit U) Engine Knock Sensor Pair
2007GMC Sierra 1500 HD Classic GMC Sierra 1500 HD Classic V8 6.0L (8th Vin Digit U) Engine Knock Sensor Pair
1999-2000GMC Sierra 2500 GMC Sierra 2500 V8 5.3L Engine Knock Sensor Pair
1999-2004GMC Sierra 2500 GMC Sierra 2500 V8 6.0L Engine Knock Sensor Pair
2001-2004GMC Sierra 2500 HD GMC Sierra 2500 HD V8 6.0L Engine Knock Sensor Pair
2005-2006GMC Sierra 2500 HD GMC Sierra 2500 HD V8 6.0L (8th Vin Digit U) Engine Knock Sensor Pair
2007GMC Sierra 2500 HD Classic GMC Sierra 2500 HD Classic V8 6.0L (8th Vin Digit U) Engine Knock Sensor Pair
2001-2004GMC Sierra 3500 GMC Sierra 3500 V8 6.0L Engine Knock Sensor Pair
2005-2006GMC Sierra 3500 GMC Sierra 3500 V8 6.0L (8th Vin Digit U) Engine Knock Sensor Pair
2007GMC Sierra 3500 Classic GMC Sierra 3500 Classic V8 6.0L (8th Vin Digit U) Engine Knock Sensor Pair
2000-2003GMC Yukon GMC Yukon V8 4.8L Engine Knock Sensor Pair
2000-2006GMC Yukon GMC Yukon V8 5.3L Engine Knock Sensor Pair
2001-2006GMC Yukon GMC Yukon Denali V8 6.0L Engine Knock Sensor Pair
2000GMC Yukon XL 1500 GMC Yukon XL 1500 V8 5.3L Engine Knock Sensor Pair
2006GMC Yukon XL 1500 GMC Yukon XL 1500 V8 5.3L Engine Knock Sensor Pair
2000GMC Yukon XL 2500 GMC Yukon XL 2500 V8 6.0L Engine Knock Sensor Pair
2003-2006GMC Yukon XL 2500 GMC Yukon XL 2500 V8 6.0L Engine Knock Sensor Pair
2003-2007Hummer H2 Hummer H2 V8 6.0L Engine Knock Sensor Pair
2003-2005Isuzu Ascender Isuzu Ascender V8 5.3L Engine Knock Sensor Pair
1998Pontiac Firebird Pontiac Firebird V8 5.7L (8th Vin Digit G) without Locating Tab Engine Knock Sensor Pair
1999-2002Pontiac Firebird Pontiac Firebird V8 5.7L (8th Vin Digit G) Engine Knock Sensor Pair
2004Pontiac GTO Pontiac GTO V8 5.7L Engine Knock Sensor Pair
Part #: 1AEEK00643


Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

How-to Video:

(15:52 min)