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Your cart is empty.Tried and true with 100 years of OE engineering and testing built right in? Well, you get it. We utilize the latest OE technology and components to bring exceptional quality and durability to exceed OE requirements. We also have OE-level training and advanced diagnostics, including reset adaption, adjust/reset of the throttle actuator and EGR valve coding. Delphi has the high quality emissions, ignition and sensor parts to help you keep that pesky check engine light off - and keep you happy.
Michael soto
2025-08-25 12:06:46
These Deliphi knock sensors worked great!!! Finally good knock sensors that worked great. Had oem gm knock sensor installed last year. And failed so i decided to buy these instead. My mechanic charged me about 230$ to install them for me little did i know the light came back on while driving. I was mad as hell but i did some research online and gm forums. And youtube on knock sensors and read that you are suppose to test them for resistance. And my mechanic tested these knock sensor and worked awesome and when he tested for signal they light right up. when you tapped the motor or any metal part. Light hasnt came on at all great sensors. Definately would recommend.
Jav
2025-07-18 12:04:07
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LaserLips
2025-06-22 10:51:13
I bought these because ACDelco sometimes sources products from Delphi and these were half the price of the ACDelco sensors. My 2002 Suburban had been getting these codes because of the known rust issues with the 2000-2006 design.Anyhow I bought two of these and a new ACDelco wire harness. I did the work of replacing them, codes kept appearing. I thought maybe I had installed them wrong (torque) because the resistance was perfect at 100.3 on the ohm meter and I got a voltage response when tapping. So I did the job again, made sure all rust was scrubbed out, a little dielectric grease, perfect tongue, ground continuity as expected, but the whole thing back together (not a quick job) and the codes came back!I tinkered with resistance on the wires, figured it had to be the wires or ECM, couldn’t possibly be these sensors. I battled this for 6 months (too late to return these) until I asked a neighbor with the same engine to let me check his wire resistance for the knock sensors… turned out mine had been perfect before I started trying to mess with them. Finally bought a pair of ACDelcos from a local dealer and did the job a third time. After pulling these out I compared them with the ACDelcos. The ACDelvos measured 99.8 resistance (perfect, nearly identical to these, but the voltage check with a tap was insanely different. The ACDelcos voltage was way more responsive to taps.Once I put it all back together with the ACDelcos, the codes vanished and haven’t come back in over 300 miles. I’m kicking myself that I trusted these Delphi units and so much money, labor, and frustration are down the drain.
Joe
2025-05-18 20:40:11
These are good quality Knock sensors that work!!... I had to do this Job 3 times!! first i bought Acdelcos from eBay then from the GM Dealer both threw a check engine light in less the 50 miles , well after doing some research online come to find out there was a Massive bad batch of Acdelco Knock sensors. So i bought these knowing Delphi makes sensors for GM and so far thy been working good almost 20,000 miles on them and no check engine light.
tony cruci
2025-05-12 18:32:23
Products are good quality and fit perfectly.
Gabe
2025-04-05 16:47:25
I bought Dorman knock sensors kit and failed. Didn’t want to use them but parts store had no other option. I need it running that day and Of course had to pull the intake again a week later. Just installed these Delphi today seem to be working so far, no code yet. Tested for continuity and a/c volts, both read fine.
SOU
2025-03-30 18:47:47
I changed out my knock sensors because of preventive maintenance since I already had the intake manifold off. I went with ACDelco OEM ones. Got 2 off Amazon and after putting everything back together, my car started throwing knock sensors codes. Stupid of me not bench testing them. I thought I got fake ones and of course it was already outside of the return period. I ordered 2 more full price ACDelco ones off AutoZone (all 4 so far all say Made in Mexico and packaging look exactly the same) and after bench testing them, they were dead on arrival! And that basically sums up what's wrong with modern American cars. They don't care after they sell you the car and parts around the great engine is junk.Finally, ordered these Delphi ones and box says made in Taiwan. I held my breath and bench tested both of them. They passed and so far no codes at all after installation. Taiwan for the win!Lastly, when I was taking out the basically new ACDelco ones I just installed, one of them spun. I tried to chisel it out like some YouTube video, but it snapped off at the thread. So I spent the next hour and half drilling it out using an extractor. Sorry GM Mexico, something is really really wrong with the metal and the production.
Maureen Klus
2025-03-16 12:48:42
Water gets in these and ruins the sensor and rusts out the ground.Make a moat with grey RTV to guide watershedClean up flat plate in the hole where the sensor screws into with a dremel. That is where the sensor gets its ground. Clean the hell out of that hole if it looks anything like mine.Grey rtv the covers on and get a new wire section for that as well as an intake gasket while you’re in there.Remove the rear foam piece from the intake to allow water to flow off to the rear.
jimt
2025-01-25 10:34:08
good quality
Customer
2024-12-28 10:21:31
Funciono correctamente.
Geo
2024-12-23 21:16:59
After installing two new knocks sensors I checked the resistance and it was dead on 100 ohms, right in the middle of the specs. Seems like a very high quality product.Delphi is a major supplier to GM so why not buy direct from them instead of going through the expensive 'middle man'?
Andy G.
2024-12-16 10:01:38
Great service and great product. Thank you.😊
unanimous
2024-12-11 15:09:10
Had to rip manifold off AGAIN and replaced with OEM. That worked. Even though Delphi is all over the vehicle and used to be a GM brand I believe, these were a complete waste of time and effort! Harness was replaced too so that wasn't the issue. Returned for refund.
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