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
20 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
14
2
0
0
4
Not too great
Well they arrived agter 17 days and looked to be of fair quality..but then i installed em to find one (1 of 2) didnt make any circuit and was 100% defective but the 2nd sensor (2 of 2 ) and the harness worked and still are today.. so it doesnt pay to buy a cheap sensor and to remove my whole intake manifold again to put 2 good quality sensors in was as drustrating as waiting 17 days so not impressed at all and wont be buying anything electrinical again...stay smart and get good quality parts for your trucks and only so tbe job once thats savings to me...
June 20, 2017
Purchased
10 months ago
Awesome!
I recently purchased 1 knock sensor for my Silverado from competitor. My mistake was not purchasing both knock sensors (plus trusting my mechanic at the time.) I then purchased 2 knock sensors and 1 harness from 1A Auto (which came as a kit) for $50.30...by the way I work at that competitor I mentioned (A.Z.) and I payed $54.00 (that price was with my discount).?? Conclusion; received brand new parts prior to date, with lifetime warranty! Strongly recommend to everyone in need of auto parts.1A Auto is Awesome! Thank you!
February 27, 2017
Purchased
1 year ago
Great parts and fast.
I found them to be very helpful. My parts was the right ones good price and came fast. Yes i will use them again. For the lowest prices and right parts you can't do any better. Thanks.
July 14, 2017
Purchased
7 months ago
Great value
Sure glad I ordered both knock sensor and the harness great value
July 2, 2017
Purchased
8 months ago
03 Chevy Parts
Parts came in quick and cheaper then buying them at the store. Save lots of money for the same thing. I will be buying from here again.
March 23, 2017
Purchased
11 months ago
Great Kit Great Price
Great product but the selling point to me was the quality video on u-tube.
June 23, 2017
Purchased
10 months ago
Great!
I received my products before the expected time and it was in excellent condition.
January 31, 2017
Purchased
1 year ago
Just what I needed.
Didn't think there was even time to process my order when I pulled my parts out of my mail box
June 19, 2017
Purchased
8 months ago
Delivery was fast
Items as discribed and corrected my problems vidieo was very helpful
July 8, 2017
Purchased
8 months ago
Did not fix problem
After installing sensors, took vehicle for a test drive and the next day the check engine light came on again, for the same trouble codes. P0332 and P0327. When I have a free weekend, I will uninstall these parts and put in OEM ones. Do not go cheap people, buy OEM.
July 12, 2017
Purchased
8 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 35 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: I am assuming you are using these parts in a GM vehicle. If it does not say "AC DELCO", do not assume they are OEM AC Delco parts. 1AAUTO sells AC DELCO knock sensors. To avoid tearing the top half of the engine twice, use only OEM AC DELCO knock sensors. While replacing the knock sensors, also replace the knock sensor wiring harness. If you are planning to clean the engine bay, clean before replacing the knock sensors. Water and knock sensors do not mix very well!
How long would an average mechanic take do this job?
Larry H on Jan 28, 2016
BEST ANSWER: I'd imagine a seasoned mechanic could do this job in 4 hours. Cleaning the intake manifold and other ares around the knock sensors could take some time if done thoroughly. Most won't take the time as their task is to complete the job under the time suggested by the Chilton manual they use to determine the jobs labor rate and still get paid for a 4 hour job.
Any conscious backyard wrench twister should be able to get it done in 6 hours.
Hope this helps.
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: I didn't. The intake manifold is low pressure and the 16 year old gasket was still very pliable. I don't see the point. If your gasket has visible flaws when you pull it out, I would replace it.
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: they are "1a auto" brand. they look identical to ac delco but they dont have any markings on them. FYI do NOT over torque them it will ruin them...

How-to Video:

(15:52 min)

Tools List:

    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



This part replaces:

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

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
Part #: 1AEEK00589

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

We're here to help

1A Auto Parts

Customer Feedback

"Thanks for the fast reliable service. Great price, and the headlights were as good as oem or better!!! Keep up the good work..."
- Dwuan M.
Read More