Dual Knock Sensors with Wiring Harness Kit | Knock Sensor 5.3 for Chevy Suburban Silverado Avalanche Tahoe, GMC Sierra Yukon, Cadillac Hummer & More GM Vehicles | Replace# 12601822 12589867 917-033

Great price

Do not buy. Did not work out of the box. No activity on both sensors, both banks had codes for inactivity within a few miles and set the engine light on again. I checked the live data through a scan tool and they were for sure inactive dead sensors. I thankfully did not have the issue of them getting stuck and breaking off in the block as other customers have reported after trying to change them out for inactivity. I installed a set of ac delco sensors and there have been no issues since. I also did not use the harness after the inactivity issues either I bought another new harness. The one provided is so short it barely reaches both sensors properly and has some decent tension on the wiring when plugged in. I installed these in a fresh build and just wanted to replace the sensors because they are a little more involved to replace then average, so i tried to avoid issues by replacing them. And yes they were torqued correctly. My return window closed so I guess I am stuck with non functioning sensors. Don't waste the money and just buy the delco or genuine gm sensors.

Got here over night had amazing shipping service from a reliable source highly recommend this seller and product for others convenience

Doing knock sensors, the original harness basically crumbled trying to unplug it. This Harness was well made, length was good. I work on these trucks quite a bit. Will order harness again ahead of time for the next one.

I'd like to preface this with the fact the harness worked (and is still working) like a charm. The knock sensors however are very cheap and poorly made.**On the plus side, the seller did refund me for the cost as I ended up having to take this to a mechanic to drill out one of the broken sensors.The installation seemed overwhelming, but there are some great YouTube videos out there that will walk you through the entire process. The torque on these sensors is really low, only about 15 ft lbs.The issue for me is that even after replacing them, the car threw errors for both. When I tried removing them, the nut portion spun freely from the housing, so only the top was spinning and they weren't backing our. I used a chisel to lightly tap around the top so the nut would catch the rest of the housing. This worked well for the front sensor. When I did this to the rear sensor, the top half of the sensor broke off leaving only the bolt in the engine block. I tried backing it out with some extractors, but that broke. Three days and $750 later, my mechanic removed it and replaced them with OEM sensors (at $122/ea.)TL;DR, buy ACDelco sensors from an auto parts seller and save yourself a few hundred dollars and several hours of four letter words. What a royal pain.

Bien

Way cheaper than local parts store fits like factory.

Perfect fit. No problems with the connectors. Be sure to seal the grommets with RTV to prevent water intrusion. GM had a bulletin about this back in the day, so it's of no fault of this part.