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 SET of 3
    • (1) - Knock Sensor Harness
    • (2) - Knock Sensors
  • Replaces dealer part numbers: 10456603, 12589867, 12601822, 8104566030
  • Includes Grommets
  • Built to strict quality control standards
  • Direct replacement
  • Built to strict quality control standards

This engine knock sensor & harness kit makes a great replacement and has good cost savings over a dealer unit.

Our electrical and electronic parts are subject to strict quality control testing.  Once the item has been installed or plugged in, it is no longer eligible for a refund.  The item may be eligible for replacement, only if it is found to have a manufacturing defect. Before purchasing, please ensure proper diagnosis of the failed original part is performed

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. Please keep your invoice for proof of this warranty.

  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

4.1 / 5.0
30 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
20
4
0
0
6
Great service
First time customer i really liked the srrvice and shipping time. Definstely going to go to 1a auto next time i need a car part.
May 8, 2018
Purchased
1 month ago
Fast and friendly
In the last year I have purchased many different parts from 1aauto for my truck and wifes SUV. The parts showed up fast, they were correct and most importantly they were much cheaper than the competition. The online videos are extremely helpful for the do it yourselfers. My new favorite place to order parts from is definitely 1aauto.com
April 25, 2018
Purchased
2 months ago
Perfect fit
Quality parts at a reasonable price. The ordering and checkout process was quick and easy.
April 9, 2018
Purchased
2 months ago
Bad sensor
Out of the box bad sensor.............................................
April 8, 2018
Purchased
5 months ago
Not worth it
very cheap quality not worth it get oem now I have to remove intake again to take these cheap things out throwing codes left and right
April 8, 2018
Purchased
3 months ago
Knock sensor
Great price and good video to see how to install Would definitely purchase from A1 auto again would highly recommend
April 1, 2018
Purchased
2 months ago
Good product.
Great quality. Very reasonable prices. Plus free shipping!????????????
March 25, 2018
Purchased
2 months ago
??
GRecieved it in a timely manner. Product was exactly what I ordered and a metric tonne cheaper than anywhere else. Nothing broke on install. My problem is fixed. We'll see how long it last.
March 8, 2018
Purchased
3 months ago
great product works as advertised
bought them almost a year ago and havent had a problem with them yet great product that works as its supposed to
February 23, 2018
Purchased
1 year ago
Awesome kit, needs a little added protection
Have an entire kit pre-assembled is great, I just wish the wiring harness had some heat shield protection hoses instead of trying to add them myself.
February 20, 2018
Purchased
3 months ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 6 questions Browse 6 questions and 34 answers
Are these OEM AC Delco parts? I don't want to tear the top half of my block off and fit these to only replace them again shortly after
Richard B on Feb 2, 2016
BEST ANSWER: Hello, These here are not OEM but if you call our customer service department we may have them for you year make and model. 888-844-3393
How long would an average mechanic take do this job?
Larry H on Jan 28, 2016
BEST ANSWER: Hello, A flat rate shop can charge upwards of approx 4 hrs to do the job. It can be done sooner depending on your abilities and tool availability.
What is limitied warranty?
Amy T on Mar 24, 2017
BEST ANSWER: The limited lifetime warranty covers our part for as long as you own the vehicle. If the vehicle is sold then the warranty would become void. If you experience any issues with the parts, we ask that you contact us with a brief description of the issue so we may document our system. A replacement will be issued, and the faulty part(s) will need to be shipped back once the new parts are installed.
Should I replace the intake gasket when replacing knock sensors?
Everett on Jun 17, 2016
BEST ANSWER: While your there, its a safe bet to replace them
Does the kit come with two knock senors?
Jaypaul S on Oct 31, 2017
BEST ANSWER: Yes the kit does include 2 knock sensors and 1 harness. I suggest you purchase AC Delco knock sensors and a genuine GM harness.
I purchased this kit from 1A Auto. The harness end terminals weren't crimped properly(fell off the wires) and the knock sensors had to be replaced due to throwing codes the same day as installation. Ended up doing the job twice. Second time with OE parts with no issues after two years.
what brand are the knock sensors?
Javier M on Feb 6, 2016
BEST ANSWER: Hello, These are a 1A Auto house branded kit.

Vehicle Fit

  • 2004-2005 Cadillac CTS-V Engine Knock Sensor & Harness Kit
  • 2002-2006 Cadillac Escalade Engine Knock Sensor & Harness Kit
  • 2003-2006 Cadillac Escalade ESV Engine Knock Sensor & Harness Kit
  • 2002-2006 Cadillac Escalade EXT Engine Knock Sensor & Harness Kit
  • 2002-2006 Chevy Avalanche 1500 Engine Knock Sensor & Harness Kit
  • 1999-2002 Chevy Camaro Engine Knock Sensor & Harness Kit V8 5.7L
  • 1999-2003 Chevy Corvette Engine Knock Sensor & Harness Kit
  • 2003-2007 Chevy Express 1500 Van Engine Knock Sensor & Harness Kit V8 5.3L
  • 2003-2005 Chevy Express 2500 Van Engine Knock Sensor & Harness Kit V8 4.8L
  • 2003-2005 Chevy Express 2500 Van Engine Knock Sensor & Harness Kit V8 5.3L
  • 2003-2007 Chevy Express 2500 Van Engine Knock Sensor & Harness Kit V8 6.0L
  • 2003-2007 Chevy Express 3500 Van Engine Knock Sensor & Harness Kit
  • 1999-2006 Chevy Silverado 1500 Engine Knock Sensor & Harness Kit V8 4.8L
  • 1999-2006 Chevy Silverado 1500 Engine Knock Sensor & Harness Kit V8 5.3L
  • 2001-2006 Chevy Silverado 1500 Engine Knock Sensor & Harness Kit V8 6.0L
  • 2007 Chevy Silverado 1500 Classic Engine Knock Sensor & Harness Kit V8 4.8L
  • 2007 Chevy Silverado 1500 Classic Engine Knock Sensor & Harness Kit V8 5.3L
  • 2007 Chevy Silverado 1500 Classic Engine Knock Sensor & Harness Kit V8 6.0L
  • 2001-2003 Chevy Silverado 1500 HD Engine Knock Sensor & Harness Kit V8 6.0L
  • 2005-2006 Chevy Silverado 1500 HD Engine Knock Sensor & Harness Kit
  • 2007 Chevy Silverado 1500 HD Classic Engine Knock Sensor & Harness Kit
  • 1999-2004 Chevy Silverado 2500 Engine Knock Sensor & Harness Kit V8 5.3L
  • 1999-2004 Chevy Silverado 2500 Engine Knock Sensor & Harness Kit V8 6.0L
  • 2001-2006 Chevy Silverado 2500 HD Engine Knock Sensor & Harness Kit V8 6.0L
  • 2007 Chevy Silverado 2500 HD Classic Engine Knock Sensor & Harness Kit V8 6.0L
  • 2001-2006 Chevy Silverado 3500 Engine Knock Sensor & Harness Kit V8 6.0L
  • 2007 Chevy Silverado 3500 Classic Engine Knock Sensor & Harness Kit V8 6.0L
  • 2000-2006 Chevy Suburban 1500 Engine Knock Sensor & Harness Kit
  • 2000-2006 Chevy Suburban 2500 Engine Knock Sensor & Harness Kit V8 6.0L
  • 2000-2006 Chevy Tahoe Engine Knock Sensor & Harness Kit V8 4.8L
  • 2000-2006 Chevy Tahoe Engine Knock Sensor & Harness Kit V8 5.3L
  • 2003-2004 GMC Envoy XL Engine Knock Sensor & Harness Kit V8 5.3L
  • 2003-2007 GMC Savana 1500 Van Engine Knock Sensor & Harness Kit V8 5.3L
  • 2003-2007 GMC Savana 2500 Van Engine Knock Sensor & Harness Kit V8 6.0L
  • 2003-2007 GMC Savana 2500 Van Engine Knock Sensor & Harness Kit V8 5.3L
  • 2003-2007 GMC Savana 2500 Van Engine Knock Sensor & Harness Kit V8 4.8L
  • 2003-2007 GMC Savana 3500 Van Engine Knock Sensor & Harness Kit
  • 1999-2006 GMC Sierra 1500 Engine Knock Sensor & Harness Kit V8 4.8L
  • 1999-2006 GMC Sierra 1500 Engine Knock Sensor & Harness Kit V8 5.3L
  • 2001-2006 GMC Sierra 1500 Engine Knock Sensor & Harness Kit V8 6.0L
  • 2007 GMC Sierra 1500 Classic Engine Knock Sensor & Harness Kit V8 6.0L
  • 2007 GMC Sierra 1500 Classic Engine Knock Sensor & Harness Kit V8 5.3L
  • 2007 GMC Sierra 1500 Classic Engine Knock Sensor & Harness Kit V8 4.8L
  • 2001-2003 GMC Sierra 1500 HD Engine Knock Sensor & Harness Kit V8 6.0L
  • 2005-2006 GMC Sierra 1500 HD Engine Knock Sensor & Harness Kit
  • 2007 GMC Sierra 1500 HD Classic Engine Knock Sensor & Harness Kit
  • 1999-2000 GMC Sierra 2500 Engine Knock Sensor & Harness Kit
  • 2001-2004 GMC Sierra 2500 Engine Knock Sensor & Harness Kit V8 6.0L
  • 2001-2006 GMC Sierra 2500 HD Engine Knock Sensor & Harness Kit V8 6.0L
  • 2007 GMC Sierra 2500 HD Classic Engine Knock Sensor & Harness Kit V8 6.0L (8th Vin Digit U)
  • 2001-2004 GMC Sierra 3500 Engine Knock Sensor & Harness Kit V8 6.0L
  • 2005-2006 GMC Sierra 3500 Engine Knock Sensor & Harness Kit V8 6.0L (8th Vin Digit U)
  • 2007 GMC Sierra 3500 Classic Engine Knock Sensor & Harness Kit V8 6.0L (8th Vin Digit U)
  • 2000-2003 GMC Yukon Engine Knock Sensor & Harness Kit V8 4.8L
  • 2000-2006 GMC Yukon Engine Knock Sensor & Harness Kit V8 5.3L
  • 2001-2006 GMC Yukon Denali Engine Knock Sensor & Harness Kit with V8 6.0L
  • 2006 GMC Yukon XL 1500 Engine Knock Sensor & Harness Kit V8 5.3L
  • 2003-2006 GMC Yukon XL 2500 Engine Knock Sensor & Harness Kit V8 6.0L
  • 2005-2007 Hummer H2 Engine Knock Sensor & Harness Kit
  • 1999-2002 Pontiac Firebird Engine Knock Sensor & Harness Kit V8 5.7L
  • 2004 Pontiac GTO Engine Knock Sensor & Harness Kit

This part replaces:

  • Wells 1437
  • OE # 10456603
  • OE # 12575869
  • OE # 12589867
  • OE # 12597415
  • OE # 12601822
  • OE # 8104566030
  • Standard Motor Products KS116
  • Dorman 917-033
Part #: 1AEEK00589

Ships Same Day for orders placed by 4 P.M. ET

How-to Video:

(15:52 min)