As an Original Equipment Supplier, Delphi Automotive products from 1A Auto come directly from the source. You wont have to worry about going to the dealership for Original Equipment - these parts are the exact same as the original. Delphi products come with the same quality from the dealership at a lower cost to you.
Install Tip: You may be required to reset the vehicle computer after installation of this part.
Direct Fit Replacement - Guaranteed to fit and function for your specific application Quality Tested - built to a strict level of product standards.
Item Condition:New
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. This warranty covers the cost of the part only.
Returns: Parts with electrical components cannot be returned once installed.
FREE Shipping is standard on Orders shipped to the lower 48 States (Contiguous United States). Standard shipping charges apply to Hawaii, Alaska and US Territories. Shipping is not available to Canada.
Expedited is available on checkout to the United States, excluding Alaska, Hawaii and US Territories as well as P.O. Boxes and APO/FPO/DPO addresses. Final shipping costs are available at checkout.
How to Replace Mass Air Flow Sensor Meter 2001-06 GMC Sierra 2500 HD
Created on:
Tools used
Flat Blade Screwdriver
1. Move the air intake tube out of the way.
Loosen the clamps and disconnect the tube with your screwdriver.
Unclip the radiator hose.
2. Remove the air flow sensor
Disconnect the wiring harness.
Remove the hose clamp and use a screwdriver to break the seal to pull off the air flow sensor.
3. Install the new airflow sensor
Transfer the seal ring to the new sensor.
Mount the airflow sensor and tighten the clamp.
Reconnect the wiring harness.
Reconnect the intake tube and clip the radiator hose on.
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the internet.
Hi, I'm Mike Green, I'm one of the owners at 1A Auto. I want to help you save time and money, repairing and maintaining your vehicle. I'm going to use my 20 plus years' experience restoring and repairing cars and trucks like this to show you the correct way to install parts from 1aauto.com. The right parts installed correctly. That's going to save you time and money. Thank you and enjoy the video.
In this video we are going to show you how to replace the air flow sensor on this 2002 Sierra with a 6.0 liter. This particular is basically the same for any 99 to 06, or 2000 and 2006 GMC or Chevy truck and SUV. The only tool you'll need is a flat way screwdriver.
First you want to remove your intake hose by removing or losing two clamps one there and one there. We're going to kind of speed through this part here. Use your screwdriver to pry in break the rubber loose from the plastic, maybe twist is a little bit as well, and then pull it from the throttle body. Also, pry the little clip that holds the radiator hose in; pry that out with your screwdriver as well. With the intake out of your way, you're going to want to use a screwdriver, and there's a gray locking clip here that you want to pry up from each side. There is comes out, and the little tab right here, you push that tab, pull up and off, and then you have a hose clamp, and use your flat way screwdriver.
You want to probably twist, use your screwdriver to kind of break the seal of the plastic and the rubber, and the air flow sensor comes right off. You can see the new part from 1A Auto, is just like the old part. You would transfer this ring, this air flow sensor on this vehicle is working fine. I'm not going to put a new one on. Obviously you would just remove this rubber ring with some force. It basically sticks to the plastic. There the ring it off, and you would clip the ring right back on. Have a couple of tabs that locate it right down here, that tab. Push it right back on. There is a cutout right here and a locater on the air box to line up. Push it on. Tighten up your clamp. Plug that in. Make sure you put your locking tab back down in.
We're going to fast-forward through this section which is just putting that tube back in basically, and pushing the rubber onto the plastic, tightening up the clamps, and reinstalling that little clamp that held that radiator hose to it. After that you should be pretty much all set.
We hope this helps you out, brought to you by www.1AAuto.com. Your choice for quality replacement parts and the best service on the internet. Please feel free to call us toll free 888-844-3393. We're the company that serves you on the internet and in person.
AF10043
In Stock
Product Reviews
Loading reviews
5.00/ 5.011
11 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
11
0
0
0
0
Best replacement parts
T
November 29, 2018
Very well packed when delivered. Matched the original equipment perfectly will continue to order my parts from here
Replacement Parts
Adrian
November 14, 2019
Worked as expected. No issues. Just the way I like it.
Breath of fresh air.
Andronik
January 9, 2020
It's good to be able to give my motor fresh air!
Mass airflow sensor for a 2004 GMC 2500 HD
Todd
February 16, 2020
Easy insulation and made a difference in the way my truck ran and idledWrite your review here. It must be at least 4 characters long. Consider whether you would recommend this product and what you like or dislike about it.
MAF review
A
March 25, 2020
This was an exact replacement. It installed easily and is working perfectly.
The packaging was secure and protected the unit during shipping.
I am very pleasedwith1A Auto and recommend them without resevation.
Mass Air Flow Sensor
Don
September 25, 2020
This part has taken care of the problem I had with my truck. I have been impressed with 1AAuto. The parts I have bought from them have been the closest to original parts as I have been able to find.
Thank you
02 GMC Mass Air Flow Sensor Replacement
Richard
April 13, 2021
Sensor was a perfect match. Very easy to install. I watched the how to video which helped a lot. A1 Auto has a good library of how to videos for help with correctly replacing your parts. You will save a lot of money and get quality parts.
Joshua
October 18, 2021
Great product works perfectly
DEEAF00019-Mass Air Flow Sensor Delphi AF10043
Micheal
October 11, 2023
works great
Such an easy replacement MAS.
[{"url": "https://wac.edgecastcdn.net/001A39/prod/media/pNISJll75W64CYGsite/3fd9f448f416ab668a38ebce253bc017_1698425419607_0.jpeg", "caption": "So easy to install with the 1aauto video."}, {"url": "https://wac.edgecastcdn.net/001A39/prod/media/pNISJll75W64CYGsite/0fcadb1d41d2c6b560528b0346087112_1698425419607_1.jpeg", "caption": "The Mass Airflow Sensor needed to be replaced."}, {"url": "https://wac.edgecastcdn.net/001A39/prod/media/pNISJll75W64CYGsite/238c52098b6ab8118a96fd153552472c_1698425419607_2.jpeg", "caption": "Remove the original MAS and replace it with the new MAS in 10 to 15min."}]
Eduardo
October 27, 2023
My engine light went on. My code reader indicated to replace the Mass Air Flow Sensor. I ordered the new MAS from 1a auto and it arrived within a few days. Reasonable price, fit perfectly and no more engine light on. Thank you.
Mass Air Flow Sensor
David
January 22, 2024
Part is OEM. Perfect fit. Simple to install. Reviewed 1A video to confirm disconnecting electrical connection.
Saved $600 + off dealer installation. Took less than 15 minutes.
As always you guys are great.
Customer Q&A
Does your air intake make a loud noise like a bearing going out?February 14, 2021
David S
10
There could be multiple reasons why you're having this particular problem. We suggest taking your vehicle to a nearby reputable shop to identify the cause. Once you know the cause, we'll be happy to see if we carry the parts and how-to videos needed for your repair.
February 15, 2021
T I
Will this fit a 5.3 02 chevy tahoe?April 24, 2022
Jorge C
10
Yes, this part will fit your vehicle.
April 25, 2022
Emma 1
Customer service
877-844-3393
Monday - Friday 8:00am - 9:30pm ET Saturday - Sunday 8:00am - 4:30pm ET
Oldsmobile is a registered trademark of General Motors Company. 1A Auto is not affiliated with or sponsored by Oldsmobile or General Motors Company.See all trademarks.
Enter Vehicle Year Make Model
Specify your vehicle's year, make and model to guarantee fit.
Year
Make
Model
Options
Drivetrain
This part doesn’t fit a . Select from parts that fit.