Replaces

Chevy GMC Cadillac O2 Oxygen Sensor 4 Piece Set - 1AEEK00816

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Q&A
Vehicle Fit

Part Details

  • Quantity:   4 Piece Set

Our electrical and electronic parts are subject to strict quality testing.

Parts cannot be returned after they have been installed. Contact us with any questions before installing the parts.

Item Condition: New

Attention California Customers:

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Lifetime Warranty

This item is backed by our limited lifetime warranty. In the event this item should fail due to manufacturing defects during intended use, we will replace the part free of charge.

  1. step : Removing the Upstream O2 Sensor (0:36)
    • Identify the upstream and downstream O2 Sensors
    • Clip the harness pin with wire cutters from the upstream harness
    • Disconnect the upstream harness
    • Pry and separate the clip from the upstream sensor with a flat blade screwdriver
    • Pull the O2 sensor wire free from the clips
    • Cut the harness connector with wire cutters
    • Remove the O2 sensor with a 7/8 wrench
  2. step : Installing the New Upstream O2 Sensor (2:15)
    • Feed and twist the new upstream O2 sensor into places
    • Tighten the O2 sensor with a 7/8 wrench
    • Push the harness over the frame and reconnect the clip
    • Connect the harness and push the pin in place
    • Re-clip the harness into the bracket

Tools needed for replacement:

    Pliers, Cutters & misc Wrenches

  • Wire Cutters

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Wrenches - SAE

  • 7/8 Inch Wrench

4.58/ 5.0
43 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
33
5
3
1
1
Perfect fit! Great products and service
I’ve been ordering a lot of parts from y’all. You have great products at a great price. I really like the videos too, thanks y’all
February 16, 2018
Wrong part for truck
Complete wrong oxygen sensors for my truck, even though the listing said "guaranteed to fit". I found that out too late after I had already opened them. Going to try to salvage some of the cost by listing the new ncorrect parts on eBay. I dont know what these fit, but it wasnt my truck.
March 23, 2018
Perfect fit!
My o2 sensors were a perfect fit. For a very affordable price !
April 1, 2018
Working great so far
Working great so far, the sensors fit perfectly and all is well.
April 2, 2018
Good product but not 100% correct
The product was high quality but unfortunently this did not work for all 4 sensors as the connectors were different. This is not 1As auto fault as Chevy trucks some have the flat connector on the pre cats and some have the square. Before purchasing this verify what you have.
April 4, 2018
truck parts
thank you. Our truck is working great again. Will buy future parts from you
July 29, 2018
First Time User
Happy with being able to speak with someone about ordering the correct part. Pricing was cheaper than going to a brick and mortar.
August 1, 2018
Junk
Don’t buy the cheap ones, spend the money and get good ones, usually reflected by price. these only lasted about a month and got same codes again, i replaced with better ones and haven’t had a problem since. i would not recommend.
August 1, 2018
So far so good . Glad we found this site . It was affordable and when I wasnt sure about something I called and they were very helpful and extremely nice . I would really recommend 1A Auto . Thank you 1A Auto
September 28, 2018
Worked great and good price too
First, when I was having to buy new sensors I was expecting a higher price so I was relieved to see it wasn’t nearly as bad as I thought it was on my wallet. Installed them without any issues and now my fuel air mixture is where it should be so I’m quite pleased with my purchase ^__^
October 3, 2018
An excellent place to buy parts
I’ve bought from one a auto several times now and it’s always been exactly what I ordered it came early and they have great customer service
October 9, 2018
02 sensors
The 02 sensors were a perpect match and work as good as the originals.
November 2, 2018
1AEEK00816-O2 Oxygen Sensor
This item could not be located locally when I needed them, but 1A-Auto had them and shipped them out ASAP! One awesome transaction! Thanks A1-Auto!
November 15, 2018
2000 Silverado 1500
I purchased 4 Oxygen Sensors for my Silverado. Thanks to 1aauto I have achieved 312,000 miles and plan on getting many more on this truck. Thank you
November 22, 2018
Great price
Well very good part so far and if you take the time to do this, well lets see over $250 a plug for a mechanic to do this and not sure if service engine light will go off or not, or $75 and then have to get some special tools which was only $12 to $40 dollars, well light came on again but computer pointed this out and then EGR valve next and computer is only telling me ABS now, which God has blessed me with the ability to brake, so worth the time and the money to lift my hands and feet and make the computer on the horse happy.
November 25, 2018
O2 Sensors
Not sure if the quality of the product was the problem or if theres another issue, installed the sensors and cleared the codes. Same codes popped back up and having the same problem. Now as for the process of ordering, product came in a timely manner and each sensor was individually wrapped. They were not marked as which was which, had to figure that out on my own. Ill definitely be ordering more products. Im pretty sure my truck is the problem and not the product I ordered. This truck has been giving me problems in the past few years and I think its just time to part ways with it.. I just love my 01 Yukon XL weve been all over the USA together.
November 29, 2018
great value
Parts fit perfect and as always a great value. The free shipping is a great added bonus.
December 30, 2018
O2 sensors for 1999 Suburban
Received the sensors within a week of ordering. Watched the video, which was very helpful. Replaced the upstream sensors, the one on the engine side of the converter, and within a few days the service engine light turned off and the vehicle started running a lot better. I would recommend these highly.
January 5, 2019
Top notch
Yet again 1A has provided quality parts good prices, and fast shipping. Its the reason I keep coming back.
January 8, 2019
Life saving
In the need of any part I strongly believe 1aauto can forfil yo any need and ship on time r day befor
January 30, 2019
99 GMC Sierra o2 sensors
Saved me $100 if I had went to the local parts store. Sensors came in just a couple days and new on packaging. Would definitely buy again
March 7, 2019
02 sensors
Good product so far seems well built. Only negative thing is the upstream sensors are not direct fit. You going to have to spice them in use your old connector end.
March 11, 2019
Very satisfied
The part was very helpful and I would recommend anyone to try this company, and the prices are great.
March 18, 2019
Not correct for the 2004 Yukon Denali.
In looking up the year and make O2 snesors this is what pulled up. I went to install and found that all the connections were different. Quailty of part looks good. How well it functions, i am not sure. Shipping was good So due to the fact i did not look at my connections first i ended up with 4 sensors i can not use. Will look int returning them.
March 31, 2019
Great price and easy install
This was much less expensive than buying from local auto parts store. It came pretty fast and was easy to install would recommend
April 4, 2019
1999 K1500 suburban oxygen sensors
Positive experience. Expedient delivery. Exact fit for vehicle. Time will tell how effective. Highly recommend.
April 5, 2019
Good customer service
I ordered o2 sensors for a 2002 Yukon. I received the wrong parts but A1 researched what went wrong and at the end of the day issued me a refund. I also didn’t have to hassle with sending the parts back. Even though the parts were incorrect they did great on the service side. May buy again in the future. Thanks
April 5, 2019
Good service, Good products
April 8, 2019
DOES NOT FIT 6.0 GAS ENGINE
i ordered these because after entering my trucks info this is what came up. once i took one out of the package i notice that the wiring was incorrect for my 2000 3/4 silverado 2500 6.0 gas engine. they were shipped fast and appeared to be great quality, they just didnt fit my car. at first they werent going to let me return them because id opened the package. I explained that the only reason i ordered them is because their website told me to. they eventually allowed me to return them. i am still waiting for the refund. it has been roughly a week or so.
April 23, 2019
The absolute best
Since I found 1A Auto I’m absolutely please , first with there online service and delivery. More especially with the parts I have purchased and will continue to do so. Reasonably priced is why I here for all my parts needs I have older vehicles and when something goes wrong I order from 1A Auto. Aaron C. June 12,2019.
June 12, 2019
Perfect fit
The parts I ordered was a exact fit and curretlybare performing great. Will consider using 1aauto in the future.
June 17, 2019
Worked fine
Fit with no problem and works fine
June 24, 2019
Perfect fit
Part came in on time with no problem the part fit perfectly thanks
July 11, 2019
Perfect fit for o2 sensors
Exactly as described delivered quickly. Perfect fit. Thank you took care of my issues
July 11, 2019
Perfect
Just as described, fit perfectly.
July 12, 2019
Awesome service and parts
Had an awesome buying experience. Customer service agent helped me find the right part quickly. Part worked great and fixed the problem. A1 auto is the best!
July 17, 2019
Good
July 25, 2019
Excellent
1A Auto provided an easy and problem free way to order this product and gave me several options to order from and it also arrived in a very timely manner 1A Auto Rocks !!!!
August 9, 2019
O2sensor
Items fit perfectly and arrived on time extremely happy will continue to buy from 1AA Auto.
August 26, 2019
1999 Yukon , with 345,000 km. 5.7 vortec flashing several codes.
My high miler Yukon was flashing multiple codes. I ordered the complete distributor along with the 02 sensors. I was very pleased with the shipping time , as well as the pricing. My local trusted mechanic did the install. The codes have all disappeared, my Yukon starts first time every time, the accleration is crisp and smooth, the exhaust tone is also deeper and the fuel mileage has improved. There is no longer that noticeable raw fuel stench at idle. I am very satisfied , I will definetly place furrher orders . Thank you for a job well done. Cheers.
August 31, 2019
Good parts great delivery time
Great price for a full set of O2 sensors. Very speedy delivery time. Sensors work great. Install video very helpful
October 3, 2019
O2 sensor
They were a perfect fit and a great price.
October 15, 2019
Great Products!!!!!
I searched and searched for some O2 sensors for my truck, and when I came to 1A Auto I knew I didnt need to look any further because 1A Auto had the best price on the market. The O2 sensors I received put the power back in my truck. Thanks 1A Auto for not only selling great products but also showing me how to install them.
November 8, 2019
Will this fit my car? Add a vehicle to make sure
Customer Q&A
Ask a question to 1A Auto customers who purchased the product
Are these sensors equipped with internal heaters?
Patrick W February 11, 2018
Yes they are.
Tim K March 28, 2018
Do u have to unplug the positive or negative cable before installing o2 sensors ?
Henry G June 27, 2018
Looking for a set of sensors for a 2000 Silverado 2500 with a 6.0. Will these work?
Brian S August 1, 2018
No, this oxygen sensor kit is not compatible with the 2000 Chevy Silverado 1500 with the 6.0L Engine. These sensors are only compatible with the 5.3L engine. Please let us know if you need any further assistance, thank you.
Jessica D August 2, 2018
Good question, but hard to say. They did not fit my 2002 Chevy Tahoe. Their are several models of sensors, and some have different plugs. Depends if the vehicle was made in Canada or the US, or if the parts were made in Canada or the US. In my case the vehicle was made in the US but the parts came from a plant in Canada. Made it very difficult to find the right part. My suggestion is to disconnect the plug under the vehicle, and take a picture. This will make your search much easier. With the picture, my local Pep Boys dealer helped me determine the right plug, and A1 Auto had a much better price. A1 Auto customer service was very helpful as well.
B E August 2, 2018
Would these 4 02 oxygen sensors; 2 for downstream and 2 for upstream work for my 1997 K1500 Chevrolet Silverado 5.7 Liter automatic 4x4 pickup truck?
Jorge D March 19, 2019
These sensors will fit your application as long as it has the 4L60E 4 Speed Automatic Transmission.
Andra M March 19, 2019
Are these O2 sensors 3or4 wire ?
Jimmy H May 16, 2019
These O2 sensors are 4 wire. Please be sure to check the vehicle fit list to ensure they are listed to fit your vehicle.
Anthony C May 16, 2019
Would this fit a 2002 GMC Sierra 1500 4.8?
Jose C July 28, 2019
This will be correct for that vehicle as long as it was manufactured in the U.S. Please contact us if you have any further questions.
Anthony C July 28, 2019
Year Make Model Description
1999-2000Cadillac Escalade Cadillac Escalade V8 5.7L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
2002Cadillac Escalade Cadillac Escalade V8 5.3L (excluding Canada Built Models) Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1997Chevy Astro Chevy Astro V6 4.3L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
2002Chevy Avalanche 1500 Chevy Avalanche 1500 V8 5.3L (excluding Canada Built Models) Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1999Chevy C1500 Truck Chevy C1500 Truck V8 5.0L (Transmission ID 4L60E) 4 Speed Automatic Transmission Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1998Chevy C1500 Truck Chevy C1500 Truck V6 4.3L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1999Chevy C1500 Truck Chevy C1500 Truck V8 5.7L (Transmission ID 4L60E) 4 Speed Automatic Transmission Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-2000Chevy C2500 Truck Chevy C2500 Truck V8 5.7L (Transmission ID 4L60E) 4 Speed Automatic Transmission Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-2000Chevy C2500 Truck Chevy C2500 Truck V8 5.0L (Transmission ID 4L60E) 4 Speed Automatic Transmission Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1998Chevy C2500 Truck Chevy C2500 Truck V8 5.7L (Transmission ID 4L60E) 4 Speed Automatic Transmission Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-2002Chevy Express 1500 Van Chevy Express 1500 Van V8 5.7L Under 8500LB GVW Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-2002Chevy Express 1500 Van Chevy Express 1500 Van V6 4.3L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-2002Chevy Express 1500 Van Chevy Express 1500 Van V8 5.0L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-2002Chevy Express 2500 Van Chevy Express 2500 Van V8 5.7L Under 8500LB GVW Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-2002Chevy Express 2500 Van Chevy Express 2500 Van V6 4.3L Under 8500LB GVW Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1998-2002Chevy Express 2500 Van Chevy Express 2500 Van V8 5.0L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1998Chevy K1500 Truck Chevy K1500 Truck V6 4.3L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1999Chevy K1500 Truck Chevy K1500 Truck V8 5.7L (Transmission ID 4L60E) 4 Speed Automatic Transmission Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1999Chevy K1500 Truck Chevy K1500 Truck V8 5.0L (Transmission ID 4L60E) 4 Speed Automatic Transmission Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1998Chevy K2500 Truck Chevy K2500 Truck V8 5.7L (Transmission ID 4L60E) 4 Speed Automatic Transmission Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1997-1998Chevy K2500 Truck Chevy K2500 Truck V8 5.0L (Transmission ID 4L60E) 4 Speed Automatic Transmission Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1999Chevy Silverado 1500 Chevy Silverado 1500 V8 4.8L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1999Chevy Silverado 1500 Chevy Silverado 1500 V8 5.3L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1999-2001Chevy Silverado 1500 Chevy Silverado 1500 V6 4.3L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
2000-2002Chevy Silverado 1500 Chevy Silverado 1500 V8 5.3L (excluding Canada Built Models) Downstream Upstream O2 Oxygen Sensor 4 Piece Set
2000-2002Chevy Silverado 1500 Chevy Silverado 1500 V8 4.8L (US Built Models) Downstream Upstream O2 Oxygen Sensor 4 Piece Set
2001Chevy Silverado 1500 HD Chevy Silverado 1500 HD V8 6.0L Downstream Upstream Passenger Side O2 Oxygen Sensor 4 Piece Set
1999Chevy Silverado 2500 Chevy Silverado 2500 V8 5.3L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
2000Chevy Silverado 2500 Chevy Silverado 2500 V8 5.3L (excluding Canada Built Models) Downstream Upstream O2 Oxygen Sensor 4 Piece Set
2000-2002Chevy Suburban 1500 Chevy Suburban 1500 V8 5.3L (excluding Flex Fuel) (US Built Models) Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1999Chevy Suburban C1500 Chevy Suburban C1500 V8 5.7L (Transmission ID 4L60E) 4 Speed Automatic Transmission Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1999Chevy Suburban C2500 Chevy Suburban C2500 V8 5.7L (Transmission ID 4L60E) 4 Speed Automatic Transmission Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1999Chevy Suburban K1500 Chevy Suburban K1500 V8 5.7L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996Chevy Suburban K2500 Chevy Suburban K2500 V8 5.7L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1999Chevy Tahoe Chevy Tahoe V8 5.7L (Transmission ID 4L60E) 4 Speed Automatic Transmission Downstream Upstream O2 Oxygen Sensor 4 Piece Set
2000-2002Chevy Tahoe Chevy Tahoe V8 5.3L (8th Vin Digit Z) (US Built Models) Downstream Upstream O2 Oxygen Sensor 4 Piece Set
2000-2002Chevy Tahoe Chevy Tahoe V8 4.8L (US Built Models) Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1999GMC C1500 Truck GMC C1500 Truck V8 5.0L (Transmission ID 4L60E) 4 Speed Automatic Transmission Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1998GMC C1500 Truck GMC C1500 Truck V6 4.3L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1999GMC C1500 Truck GMC C1500 Truck V8 5.7L (Transmission ID 4L60E) 4 Speed Automatic Transmission Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1999GMC C2500 Truck GMC C2500 Truck V8 5.7L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1998GMC C2500 Truck GMC C2500 Truck V8 5.0L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1999GMC K1500 Truck GMC K1500 Truck V8 5.0L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1998GMC K1500 Truck GMC K1500 Truck V6 4.3L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1999GMC K1500 Truck GMC K1500 Truck V8 5.7L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1999GMC K2500 Truck GMC K2500 Truck V8 5.7L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1998GMC K2500 Truck GMC K2500 Truck V8 5.0L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-1997GMC Safari GMC Safari V6 4.3L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-2002GMC Savana 1500 Van GMC Savana 1500 Van V8 5.0L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-2002GMC Savana 1500 Van GMC Savana 1500 Van V8 5.7L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-2002GMC Savana 1500 Van GMC Savana 1500 Van V6 4.3L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-2002GMC Savana 2500 Van GMC Savana 2500 Van V8 5.0L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-2002GMC Savana 2500 Van GMC Savana 2500 Van V6 4.3L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-2002GMC Savana 2500 Van GMC Savana 2500 Van V8 5.7L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-2002GMC Savana 3500 Van GMC Savana 3500 Van Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1999-2001GMC Sierra 1500 GMC Sierra 1500 V6 4.3L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1999GMC Sierra 1500 GMC Sierra 1500 V8 4.8L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1999GMC Sierra 1500 GMC Sierra 1500 V8 5.3L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
2000-2002GMC Sierra 1500 GMC Sierra 1500 V8 4.8L (US Built Models) Downstream Upstream O2 Oxygen Sensor 4 Piece Set
2000-2002GMC Sierra 1500 GMC Sierra 1500 V8 5.3L (excluding Canada Built Models) Downstream Upstream O2 Oxygen Sensor 4 Piece Set
2001GMC Sierra 1500 HD GMC Sierra 1500 HD V8 6.0L Downstream Upstream Passenger Side O2 Oxygen Sensor 4 Piece Set
1999GMC Sierra 2500 GMC Sierra 2500 V8 5.3L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
2000GMC Sierra 2500 GMC Sierra 2500 V8 5.3L (US Built Models) Downstream Upstream O2 Oxygen Sensor 4 Piece Set
1996-2000GMC Yukon GMC Yukon V8 5.7L Downstream Upstream O2 Oxygen Sensor 4 Piece Set
2000-2002GMC Yukon GMC Yukon V8 4.8L (US Built Models) Downstream Upstream O2 Oxygen Sensor 4 Piece Set
2000-2002GMC Yukon GMC Yukon V8 5.3L (US Built Models) Downstream Upstream O2 Oxygen Sensor 4 Piece Set
2000-2002GMC Yukon XL 1500 GMC Yukon XL 1500 V8 5.3L (US Built Models) Downstream Upstream O2 Oxygen Sensor 4 Piece Set
Part 1AEEK00816
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