1AEEK00589-Engine Knock Sensor & Harness Kit
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Engine Knock Sensor & Harness Kit DIY Solutions


99-07 GM Multifit Engine Knock Sensor Harness w/Dual Connectors & Dual Grommets
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Part 1AEEK00589

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Product Reviews
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4.22/ 5.0 72
Great!
Tameka
January 31, 2017
I received my products before the expected time and it was in excellent condition.
Awesome!
Jose Antonio
February 27, 2017
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!
03 Chevy Parts
Cory
March 23, 2017
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.
Just what I needed.
Kyle
June 19, 2017
Didn't think there was even time to process my order when I pulled my parts out of my mail box
Not too great
K
June 20, 2017
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...
Great Kit Great Price
Roy
June 23, 2017
Great product but the selling point to me was the quality video on u-tube.
Great value
M
July 2, 2017
Sure glad I ordered both knock sensor and the harness great value
Delivery was fast
R
July 8, 2017
Items as discribed and corrected my problems vidieo was very helpful
Did not fix problem
P
July 12, 2017
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.
Great parts and fast.
Jeff
July 14, 2017
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.
Bulldog replace knock sensors
Bulldog
July 31, 2017
Work great installed them and my check engine light on knock sensors cleared let's see how they go in a few weeks or months from now will do another review but for now I'm happy thanks 1A auto for great product and quality keep it up satisfied
Running strong
Garth
August 6, 2017
The sensors are not only affordable, but they work. 1A Auto videos showed me how to replace the parts better than any Chilton manual. I feel confident I did the job right; my check engine light is off; my bank account is not drained. Is there higher praise for these?
2000 Silverado knock Sensors
Mark
August 12, 2017
I am glad 1Aauto's site buying recommended buying the kit when I was doing a search on the parts. If not I would have been in a jam and had to order the wiring harness assembly. Thanks. Also your video was a big help not exactly the same but it allowed us to see what was involved. I would elaborate more on the gasket set by Felpro that's not included with this kit & add it to the kit I think it's a must . Fortunately I did buy head of time.
Awesome
Debra
August 28, 2017
Thank you for saving me a ton of $$. Mechanic shop wanted almost double for same parts. Codes went away and I passed emmissions.
Not worth it
German
September 3, 2017
Installed both sensors and wire harness, clear code and after a few miles codes came back, cleared them again, still coming up, check all the connections everything looks good, I should of listened and got oem parts, you live, you learn , now I have to spend more money and do the whole thing again
knock sensors
william
September 25, 2017
I received my order in a couple of days ,I tried to save some money by ordering the intake gasket elsewhere which didn't work out so well 10 days later i finally received the gasket and installed both today. THE next time I'll order all my parts from 1AAUTO.
Excellent Products, Excellent Pricing
CRAIG
October 3, 2017
Perfect OEM Replacement, fast shipping, and quality videos. The associated A1Auto video was extremely helpful and made for a fast (relative term here) and easy installation. Fit exactly in place and both work great. Would HIGHLY recommend that you replace both sensors and the harness just due to the difficult nature of getting to them to replace them. Thanks A1Auto for an excellent experience.
Great price, great product
connor
November 21, 2017
Knock sensors and harness arrived fast, they work as expected and considerably cheaper than GM stock ,
Nonsense knock sensor and harness kit
Rob
December 20, 2017
The purpose for installing this kid was to get my check engine soon light off install very easily once I got the intake manifold off thought the problem was solved 2 Days Later the check engine light came back on and was throwing the same code do yourself a favor and buy the original equipment
F
December 25, 2017
I am impressed with the ease of doing business with you all. Ordering process is simple,the parts are correct, delivery is on time.I have 2 older vehicles, an 06 Tahoe and a 99 Silverado, so i'm sure we will be a regular customer.Thank you and keep up the good work..
Awesome kit, needs a little added protection
John
February 20, 2018
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.
great product works as advertised
Bill nye
February 23, 2018
bought them almost a year ago and havent had a problem with them yet great product that works as its supposed to
??
Sherman
March 8, 2018
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.
Good product.
jeffery
March 25, 2018
Great quality. Very reasonable prices. Plus free shipping!????????????
Knock sensor
mark
April 1, 2018
Great price and good video to see how to install Would definitely purchase from A1 auto again would highly recommend
Not worth it
Jimmy
April 8, 2018
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
Bad sensor
S
April 8, 2018
Out of the box bad sensor.............................................
Perfect fit
Jeffrey
April 9, 2018
Quality parts at a reasonable price. The ordering and checkout process was quick and easy.
Fast and friendly
Alex Trump
April 25, 2018
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
Great service
Angel Urias
May 8, 2018
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.
Great product, fast shipping, fixed problem and was cheap.
Kristian
May 28, 2018
Everything went well with this part I have no complaints I do recommend you are TV the boot back on top of the block just to keep water from getting back down there and rusting it out
Great products
Joe
June 21, 2018
Installed it with no problems. fast shipping.. recommend 100% Great products. Fast shipping.
Dont waste your money
Andrea
July 31, 2018
My car was throwing a code for one of my knock sensors. Decided to purchase from this website as it was a good price for the knock sensors themselves and the harness. That was a huge mistake. Upon having them replaced by a professional mechanic, the car started throwing codes for both sensors. I then went to a local auto parts store where I had to spend more money. However, as expected, those fixed the problem. I tried to see if I could get my money back or at least get new ones not that I needed them anyway and received the response about how products that have been used are not subject to refund because of their quality control however how am i supposed to know something doesnt work if it is not installed? The representative tried to tell me they cant send me new ones because I didnt call to have them replaced. I did not have time to wait around to receive new ones. I told her this but this company just didnt care. I probably wouldnt have minded as much if they were courteous about
Engine knock sensor kit and free install video
ron
August 1, 2018
This is a five star kit from 1aauto and would recommend it to anyone but it was the video installation instructions from 1aauto that made me buy this kit. The video was easy to understand and covered everything I needed to know for a successful install. And best of all increased gas mileage and no more check engine light.
jasper
August 6, 2018
Fast shipping. Good quality parts. My favorite site for parts.
Engine knock sensor kit
andrew
August 18, 2018
Installed the sensors and harness. Everything worked great. Only reason for not five star rating is would be nice if a intake gasket was involved in the kit.
Sensors/electrical....always buy OEM!!!!!!!!!!!!!!!!
christopher
August 22, 2018
Went to the trouble to install knock sensors and the new ones immediately triggered the check engine light and knock sensor codes. Replaced with OEM and all is good. Nothing against 1A Auto, I have purchased several items that worked beautifully and their videos are very helpful. Gave one star because the shipping was very fast.
2003 gmc sierra
P
September 15, 2018
So far so good. Followed the video, went without a hitch.
Knock sensor...
M
September 19, 2018
Seems to be quality parts! Saved me about $150 from the price my garage gave me on the parts. Truck is running smooth, no more check engine light. :-)
Not for GM
RUTHANN
September 21, 2018
They were a pleasure doing business with even when they sent me replacements for free but I still had to purchase GM parts for the computer to read the sensors
Engine knock sensor sierra
ken
October 25, 2018
I have been ordering part 1a-auto the last 4 years. Parts are great. Never failed me. My maxima, sierra, and accord are old but in tip top shape. I just wished I found 1a-auto a long time ago. Thank you guys.
Knock censor
David
October 26, 2018
The right part the first time. Enough said.they fit in just like the old ones I took out.
Knock sensors
J
November 12, 2018
They came fast was fool proof to put on and Im very happy with my purchase will be purchasing struts for my wife car soon thanks again
Not good!!
T
November 24, 2018
Replaced knock sensors & harness. The next day I get a code for knock sensor again.?? I've read up & people say get AC Delco sensors.
D
November 28, 2018
Received the item on time. Good quality products. Have ordered items in the past and will continue to do so. Sales people are very knowledgeable and very helpful.
BEST PLACE EVER TO ORDER PARTS!!!!
V
December 12, 2018
I would recommend this place to order all you parts!!! It came just in time and fit like a glove!!! My husband was so statisfied that we will be ordering our next parts from here. No long wait time is the best thing!!! Love that we can return parts if they dont fit or ordered incorrectly but again very satisfied woth price and product!!!
Must have!!
Jonathan
March 6, 2019
Did an intake manifold job so replaced these as well. Excellent pricing!! Loyal customer, I am for a few years now and going...
No good
F
June 11, 2019
Could've just been my specific pair, but they didn't work to spec, drove the truck ten miles and the light came back on, ended up replacing the next weekend with ACDelco parts straight from the dealership.
Defective knock sensors
Ester
July 16, 2019
Engine light was on and after replacing the knock sensors and harness and running the truck for 60 miles there was no change in the performance of the truck and the engine light came back on with the same result and had to purchase the knock sensors again. Might have been defective sensors I purchased from you because the second set worked and now the engine light is off and passed emissions,
Knock sensors
Leo
July 23, 2019
The knock sensors and harness worked great on my ls motor
Good
G
July 27, 2019
I recommend this to my friends
Great service
J
July 31, 2019
Recieved what I ordered and when I needed it on time will use again.
knock sensor
J
August 14, 2019
they work o,k
Nicholas
September 8, 2019
Knock sensors fit perfectly.
Just what I needed
B
October 12, 2019
This is just what the doctor ordered for my pickup. Very happy with the shipping and price.
T
October 29, 2019
Quick and easy. Priced right also. Thanks
Part availability and price
S
December 3, 2019
I was able to purchase not one, but both knock sensors as well as the pigtail for a fraction of the price at other parts dealers. I was also pleased with the speedy delivery. I will definitely be using you guys again in the future.
Great company
M
March 25, 2020
Good parts good prices & amazing customer service a great company to buy parts from five stars all day long .
Knock Sensor
W
April 1, 2020
Part fit perfectly and everything is working fine. I will buy from 1Aauto again.
Perfect
J
May 11, 2020
Parts were exactly as described and fit perfectly. Solved my issue. Price is what drew me here and I am pleased all the way around.
Not sure what to think yet!
Matthew
August 4, 2020
I ordered this knock sensors/wiring harness kit months ago and installed them. They worked great for about a month, and then my check engine light came back on and said they were out again. So I re-ordered them and had to wait several weeks before they showed up (I live in Oklahoma. I believe 1A Auto is located in Kansas, so it usually only takes about 3-4 days for items to arrive) Im going to put these in my truck and see if that fixes it. Maybe I just got a bad batch the first time.
Best price
R
September 5, 2020
Price was best i found and free shipping. Came with both sensors and harness
Excellent product!!
U
September 13, 2020
Equal or better than OEM! No problems!
Great Quality
Jay
September 28, 2020
Very nicely made knock sensors and knock sensor wiring harness. Perfect direct replacement part for my 2000 Chevy Silverado 1500 2WD 5.3L V8.
Sensor and harness kit
T
October 13, 2020
All parts of of good quality and for as they should. As good as OEM parts.
H
October 29, 2020
All the parts were of pretty good quality and all fit perfectly...would order from them again
Work great
Roger
November 8, 2020
They work great. Check engine light is off again, 2006 Silverado 1500 5.3L
Excellent service and great product!
Derrick
December 21, 2020
Part was as described, well made and good quality! Very good customer service and super fast delivery, especially with everything going on today with viruses and holiday seasons! Great all around experience!!!
Perfect Fit
V
January 29, 2021
This combination worked as advertised ? on my 1999 Chevy Silverado & no engine codes have come back. This was my 3rd attempt to kill codes. Thank you 1A Auto for supplying great parts. Vernon B/DIYer
Exactly as described!
Donald
May 7, 2021
Items exactly as described, fast shipping, and fantastic price!
Joel
August 11, 2021
Very good so far
engine overhaul
Felix
August 11, 2021
After the engine blew with almost a quarter million miles on it, I had to replace a whole bunch of things and clean oil from everywhere, so, one of the things I replaced since, the engine was torn down to bare pieces, was this engine knock sensor and harness. The motor is back together again and it is running beautifully and very quiet!!! Thank you for having the parts that I needed and will be a continuing to return customer for parts as needed...much cheaper than purchasing a new truck!!!
Customer Q&A
How long would an average mechanic take do this job?
January 29, 2016
Larry H
10
According to the service manual I had it listed as 4.2 hours.
January 29, 2016
Robert R
10
1 1/2 hour
January 29, 2016
Curwood D
10
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.
January 29, 2016
Barry E
10
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.
February 2, 2016
Brian F
10
It took me about 4 hours the first time, in part because I did clean the engine as I took things apart. The second time I did it, it only took about two hours.
February 3, 2016
Eric I
10
It may have taken an hour to tear down and put back together plus a half hour of cleaning. However, my back sensor was rusted so badly it disintegrated when I tried to remove it. It took 5 hours to get the bolt out and I twisted up my stud puller. This was my first time and I'm just a do-it-yourself kinda mechanic. The 1A Auto video is what made it easy except for that bolt.
August 6, 2017
Garth M
10
It all depends on how bad the sensors are and rusted in they are.
August 28, 2017
Debra T
10
6 hours
July 27, 2019
G A
10
Four hours
September 3, 2019
G L
10
A few hours. Only because you have to remove the whole upper intake.
September 8, 2019
Nicholas R
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
February 2, 2016
Richard B
10
Bought these for my 01 6.0 and they worked perfectly. The only thing is make sure not to over torque the sensors they have a very low torque spec I believe it's 15 ft lbs
February 3, 2016
Eric T
10
TThey are not OEM AC Delco parts. I put these in and they went out again. I talked to a few mechanics and due to the sensitive nature of knock sensors its better to pay for the AC Delco ones. I put the ac delco ones in and havent had a problem since. Make sure to seal around them with rtv if its a silverado. There is a safety bulletin about it. Also do not, repeat do not over tighten them or they will almost immediately fail.
February 3, 2016
Korey W
10
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!
February 3, 2016
Roy G
10
The harness worked fine, but the ECM on my 2005 Tahoe did not like the Knock Sensors. I ended up returning the Knock Sensors and getting AC Delco (1A Auto was great to work with on the return).
February 3, 2016
David W
10
Also, you might want to buy a replacement intake manifold gasket.
February 3, 2016
Eric I
10
I did buy gaskets
September 3, 2019
G L
what brand are the knock sensors?
February 6, 2016
Javier M
10
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...
February 6, 2016
Nick L
10
After market doesn't have name brand
February 7, 2016
Shane O
10
I don't remember, but they are 100% compatible, they fill and look like the Ac delco
February 7, 2016
Elis L
10
Hello, These are a 1A Auto house branded kit.
February 8, 2016
Brian F
10
House brand made in another country
January 26, 2020
C R
Should I replace the intake gasket when replacing knock sensors?
June 17, 2016
Everett M
10
would better safe than sorry
June 17, 2016
Harold D
10
While your there, its a safe bet to replace them
June 17, 2016
Brian F
10
yes
June 17, 2016
Christopher S
10
Absolutely , I did when I replaced sensors ... Check 1A Auto for price .. Make sure you change /replace the lead wire connector when you change the sensors
June 17, 2016
RICHARD R
10
Absolutely. If you're going that deep, you should have the peace of mind when it's all back together.
June 17, 2016
Dan D
10
YEs I replaced the intake gasket because this is the right thing to do. Also I replaced the harness I
June 17, 2016
Calvin J
10
Yes. You are already there.
June 19, 2016
Barry E
10
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.
August 6, 2017
Garth M
10
If you go to the specs. It always recommends replacing when removing. You will never get the same torque again and the rubber portion of the gasket varies
August 12, 2017
Mark M
10
Yes. Dont take the chance of having a leak
August 28, 2017
Debra T
10
absolutely
February 23, 2018
Bill nye B
10
Yes
July 27, 2019
G A
10
Yes
September 3, 2019
G L
What is limitied warranty?
March 24, 2017
Amy T
10
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.
March 24, 2017
Alex P
Does the kit come with two knock senors?
October 31, 2017
Jaypaul S
10
Yes it does come with 2.
October 31, 2017
Trey O
10
Yes
October 31, 2017
Michael S
10
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.
November 1, 2017
Rick S
10
Yes
November 21, 2017
Connor B
10
comes with everything shown
February 23, 2018
Bill nye B
10
Yes
September 3, 2019
G L
10
Yes and the connector
September 8, 2019
Nicholas R
Customer service

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