1AEEK00785-Chevrolet GMC Cadillac Engine Knock Sensor & Harness Kit TRQ ESA12270
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Chevrolet GMC Cadillac Engine Knock Sensor & Harness Kit TRQ ESA12270

99-03 GM Multifit Engine Knock Sensor, Harness, and Gasket Kit (4pc)
$ 82.95
$105.95
22% OFF
$105.95
22% OFF
FREE SAME DAY SHIPPING
TRQ
ESA12270
In Stock

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TRQ
ESA12270
In Stock
Product Reviews
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4.10/ 5.0 49
Worth the price
Paul
May 12, 2018
Bought this to get both jobs out of the way at the same time. Everything went together smoothly, truck runs better. Couldn't ask for more than that!
Works great
Jaydan
October 10, 2018
Part seems to be of quality, solved my problem! 10/10 would order from 1A again
Monie saved
H
November 5, 2018
This kit...... Way cheep compared to my local part dealers. One knock sensor cost bout tha same as this whole kit. Every thing fit perfectly an fixed my problem. Its a blessin to have found 1aauto i will refer all my family and friends to check 1aauto fo there part needs.
Knock Sensor
W
January 8, 2019
The kit came in 2 packages, one package with the harness and the gasket, the other package had the sensors. One of the sensors came in defective. Had to pay the shop to do the labor twice.......not good
Richard
February 23, 2019
Great product. Fixed my truck great. Will be ordering from here again.
Exactly what I needed
BRANDON
June 8, 2019
This was the perfect kit to fix my knock sensor issue and I opted to replace both sensors and the harness because I only want to do that job once. Everything so far so good
Product review
T
July 16, 2019
This was a great product and the employes was great they helped me get all the right stuff for my truck and they work really hard to make sure it is right
Knock sensor
Francisco
September 11, 2019
Bought my knock sensor from A1 for half the half price at any store and can't be any happier with them working great. Delivery was on time like the estimated. Just ordered more parts from them.
Auto parts
T
September 17, 2019
These parts are working great great service and the people were very helpful will be using again
T
November 5, 2019
I recommend this. Fits perfectly
David
January 15, 2020
I received my package on time as usual. The only problem is the cheap gaskets sent with it , they make a steel version that is superior to the factory ones .
Worked great
B
January 22, 2020
The parts arrived on time and where just what I needed.
Dwight
April 5, 2020
Affordable, fast delivery, well packaged.
Super helpful
T
April 12, 2020
If you are getting the code p0332, itll be the engine knock sensor in the back, I got the kit because it is cheaper and over all easier. Thanks to 1aauto, I was able to get my truck running again and do the work myself with their super helpful videos
Vortech 6.0 knock sensors
Troy
April 14, 2020
Fit just like original and no more lights Protect them motors from a bad detonation
1a auto
N
May 16, 2020
Hands down best on parts and deliveries
Great parts, tutorials and service
Rodney
July 28, 2020
I have had very good history with ordering from 1A auto, quality parts and service. 1A will be my goto
Worked as it should
steven
August 12, 2020
everything fit perfectly. No more check engine light. I'm happy all the way around
Good value
Nick
August 17, 2020
the right parts for a great price
All parts and exactly fit only can find on 1Aauto
Mahir
September 7, 2020
Parts amazing and fit like original Price amazing
Perfect fit, all the parts I needed
L
September 20, 2020
I compared this kit to others offered by other vendors. The ratings, price including shipping led me to purchase this kit from 1A. Delivery was quick, the items were well packed and everything fit exactly as they should. My Suburban runs better than it used to and I will be buying more stuff rom 1A in the future.
Knock sensors
Logan
October 24, 2020
The gaskets did not clip on right and one of the knock sensors twisted of in my block with barely any force once I began to tighten
Service was excellent
R
December 8, 2020
Ordered parts on Tuesday for repairs needed on Friday. Parts arrived on Wednesday and repairs were made. Could not ask for better service.
Good product
Jared
January 16, 2021
Good product came in fast. Just the intake gaskets are giving me trouble. Not sure if its the same as OME but would buy.
Engine knock sensor and harness
Anthony
May 23, 2021
I purchased a engine knock sensor and harness. The knock sensors and harness kit was packaged well. The video on the website told me step by step how to fix the problem for my Chevy avalanche. The fix went well and all of the things I ordered fit and worked. The next day while driving to work my check engine light went off and the truck has been driving normally since. I was happy the knock sensor kit was affordable and good quality.
Would recommend for 99 5.3
Keith
June 13, 2021
Worked perfect for 99 5.3 Silverado. I would recommend this kit. Take your time and clean the intake and head surfaces.
Great parts!
stef
July 11, 2021
Fit perfectly and my engine is running great!
John
July 16, 2021
Doing well so far ! Fast. Shipping Awsome price.
Ronald
July 28, 2021
Parts are perfect fit very pleased
Knocks no more
Richard
August 16, 2021
Quality parts
Great part at great reasonable prices
Joseph
October 12, 2021
Well I loved everything thing about the kit but after further diagnosis and to my surprise I had a bad battery connection so I didn't need the knock sensor kit but everything about the kit was cool thanks 1A auto for a cool kit and great parts you are my one stop shop
02 Chevy avalanche knock sensors
Jose
January 3, 2022
Ok, was a little worried after I replaced the knock sensors and harness. The check engine light was still on!!!!!!! Drove it around all day and still nothing. Woke up this morning and the light is gone. Went straight to the SMOG station. I'm guessing it had to reset itself. The light is off, my truck is running like a champ. Would recommend.
Ricky
January 4, 2022
Everything came in and looked great and installed great but I still have the knock sensor codes
Corey
January 22, 2022
Replaced knock sensors as a preventative measure, no codes before work was done. Now knock sensor code is set and wont go away. Save time and money and buy OEM sensors.
Good
Chadwick
February 7, 2022
Works great so far!!!
Works great
Frank
February 22, 2022
Good product.
Engine Knock Sensor
Johnny
February 25, 2022
Received in a timely manner had my mechanic install them with no problems, now my suburban gas mileage is a whole lot better.
True to description
Mitchell
March 21, 2022
Works great, parts fit exactly, never had an issue since replacement!
I do not recommend this knock sensor replacement kit
Rob
May 19, 2022
After 1 month... I now am getting a P0327 code which states low-voltage knock sensor and check engine light is always on. This is the only code that comes up. I do not recommend this knock sensor replacement kit
Delivered fast, correct parts
Cameron
June 27, 2022
Went on easy, parts came as described. The plugs for the knock sensors feel slightly larger than the OEM ones, which is good! a little tougher to get on, but the seal is much tighter to hopefully keep moister out. Quick tip: if you are doing this yourself, remove the two foam guards from the intake manifold before putting it back in. They were originally meant to keep moisture out, but they actually RETAIN the moisture under the manifold, which leads to the bad sensors. removing them will let everything air out, or water to drain out the back.
[{"url": "https://wac.edgecastcdn.net/001A39/prod/media/pNISJll75W64CYGsite/19a4daef07f00de322ffdd87b7f25e95_1658350738235_0.jpeg", "caption": "Everything fit and works like its supposed to. Truck runs great again with no check engine light"}]
Anthony
July 20, 2022
Would recommend
Don't cheap out.
Elias
July 26, 2022
I bought this knock sensor kit. It lasted about 3 months and the codes came back. Replaced them last year (august). The engine light would come on and off over 5 months, and then finally stayed on. When replacing knock sensors, drive the vehicle on the highway for 50 miles from a cold start. That will reset the computer. I suppose it is hit or miss if these will last you.
Meh
Victor
July 27, 2022
Seemed like a really good deal for the knock sensors, harness and gaskets, installed, codes went away for a couple of weeks and just came back with low voltage to the sensors. Seems like a great deal but youre probably better off spending more on the knocks sensors so you dont have to pull the engine apart twice..
Adrian
October 24, 2022
I just installed my Knox Sensor last weekend and one turned out to be bad what can I do about that
Just buy factory sensors
Franky
October 30, 2022
Do your self a favor and DO NOT Buy this product. I Replaced my snesnors my check engine light came back and throwing same codes. Replaced these 2 sensors with AC delco brand and check engine light went away. Over 1,000 miles and hasnt came back on.
Is there any type of refund my sensors are bad
Matthew
February 12, 2023
Changed the sensors and harness they lasted for about 300 miles than the code came back everything was tightened to spec when installed Now I traced the wires and opened the wire harness and tested everything the wire harness to the computer is getting the correct ohms not the knock sensors they where bad . I am not happy with this a lot of money and time spent to do this .
Knock Sensors are working well.
Horace
July 7, 2023
All I have to say is everything fits perfectly and the price was perfect!
BUY OEM SENSORS
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Douglas
July 9, 2023
BUY OEM SENSORS. NO YOU WON'T BE ONE OF THE LUCKY ONES. I should have listened to all the other reviews; 55 miles and the CEL is back on with code P0327 Knock Sensors again. I did everything by the book and my garage kept 2003 GMC Yukon Denali XL 6.0 was clean to begin with. You could eat off the intake manifold mating surfaces as well as the whole top end and intake manifold itself when I was ready to put the sensors in. Torqued the sensors to spec, followed the video, & did everything right. Now I have to redo the whole thing again!!!
Quality parts
Robert
August 16, 2023
Installed perfectly and works as expected.
Customer Q&A
What brand is this product?
January 26, 2019
C C
10
1A Auto's house brand parts are manufactured by various aftermarket companies specifically for us and built to your vehicle's exact OEM specifications.
January 26, 2019
Peter L
does this part come with everything shown in the picture and does it fit the Eighth dighit in the vin which is a T?
March 3, 2019
T R
10
The kit will include everything in the photo. If you can contact us directly with your VIN we can also confirm the fit for you.
March 3, 2019
Emma F
Does this kit have both knock sensors and the complete intake manifold gasket kit?
March 4, 2019
R I
10
This kit includes both knock sensors, the knock sensor harness and the 3 gaskets for the intake manifold.
March 5, 2019
Andra M
Are these ac delco ?
May 6, 2019
Jalani G
10
1A Auto's house brand parts are manufactured by various aftermarket companies specifically for us and built to your vehicle's exact OEM specifications.
May 6, 2019
Christa R
I am wondering the description says (1) but clearly I need two knock sensors and gaskets as pictured . Does everything come in the kit that pictured???
July 28, 2020
Charles R
10
Thank you for inquiry. Yes this product will come just as pictures with two knock sensors!
July 28, 2020
T I
10
Yes it has 2 sensors a Y harness and gaskets
July 28, 2020
E L
Shouldn't I be using a.c. Delco knock sensors for my gmc yukon?
November 7, 2020
Anthony A
10
Only if you want to keep everything original on the car. The aftermarket products that they supply are just as good.
November 8, 2020
F R
10
DIY solutions brand parts are manufactured by various aftermarket companies specifically for us and built to your vehicle's exact OEM specifications. These parts should be able to work the same for your vehicle.
November 8, 2020
Emma F
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