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How to Replace Idle Air Control Valve 1996-2000 Chevy Tahoe
How to Replace Idle Air Control Valve 1996-99 GMC K1500
Created on:
Tools used
Socket Extensions
T20 Driver
Ratchet
1. Removing the Idle Air Control Valve (IACV)
Disconnect the Idle Air Control Valve wiring harness
Remove the two T20 Torx bolts from the IACV
Pull off the IACV
2. Installing the New IACV
Push the new IACV into place
Insert the two T20 bolts into the IACV
Connect the IACV wiring harness
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Don from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video, we're going to show you how to replace the idle air control valve on this 1996 Chevy Tahoe. It's the same part and process on these Tahoes from 1996 to 2000. The items you'll need for this are a new idle air control valve from 1AAuto.com and a T20 Torx bit and ratchet with an extension.
Your idle air control valve is located right here. You want to just pull back on the tab and then remove that harness, and then remove these two T20 Torx bolts. We'll just fast forward as Don does that. Now you can just pull it right out.
On the left, is the old idle air control valve. On the right, is the new one from 1A Auto. You can see they're identical and they'll mount exactly the same. Now, push your new idle air control valve into place and then replace those two T20 Torx bolts. You can see he just replaces the bolts by hand and then tightens them up with that bit and ratchet. Reconnect the harness and you're all set.
We hope this video helps you out. Brought to you by www.1AAuto.com, your source 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's here for you on the Internet and in person.
Tools used
T20 Driver
1. Removing the Air Intake
Lift the latches and remove the upper portion of the air box
Unplug the intake air temp and MAF sensors
Disconnect the breather hose
Undo the thumbscrew
Remove the intake
2. Removing the Idle Air Control Valve
Remove the electrical connector
Remove the two T20 Torx bolts
Remove the control valve
3. Installing the Idle Air Control Valve
Insert the control valve into place
Tighten the two T20 Torx bolts
Connect the connector
4. Installing the Air Intake
Reinstall the intake tab by hooking the tab over the throttle body and setting the back into place
Reinstall the tumb screw
Reconnect the MAF and intake temp sensors
Place the air box lid into place
Clasp the tabs
Connect the breather line
Hi, I'm Mike from 1AAuto. We've been selling auto parts for over 30 years! We're dedicated to delivering quality auto parts, expert customer service, and fast and free shipping, all backed by our 100% satisfaction guarantee. So visit us at 1AAuto.com, your trusted source for quality auto parts. In this video, we're going to be working with our 1996 GMC Sierra. We're going to show you how to remove and replace your idle air control valve or IAC on a 5.7l V8.
If you like this video, please click subscribe. We have a ton more information on this and many other vehicles. If you need parts for your truck, you can follow the link down in the description over to 1aauto.com.
Here are the items you'll need for this repair.
Lift up on the latches and remove the upper portion of air box. Unplug the intake air tab and mass airflow sensors. Pop the breather line off and undo the thumb screw. Rock the upper part of the intake forward and remove it from the vehicle. Your IAC or idle air control valve is located on the back of the throttle body on the driver's side. This is a little electronically actuated solenoid that changes the amount of airflow allowed to pass the throttle body for when your foot is off the throttle and the blade is closed. To replace this, we'll remove the electrical connector. You can then remove the two T20 Torx bolts with a Torx bit and a ratchet. Once the bottom bolt is loose, you can remove your idle air control valve.
Now that it's out, you can see where that bottom bolt hole is that sits in there kind of like this angle and it's pretty tricky to see that one once it's in the car, so you just got to feel around for it.
Reinstall the idle air control valve and start the T20 Torx bolts. Once the bolts are started, you can tighten them down with your T20 Torx bit and the ratchet. Reconnect your electrical connector.
Reinstall the intake tube by hooking the tab over the front of the throttle body and setting them back into place. Reinstall the thumb screw onto the stud. Reinstall the tube into the filter as well as locking into the back of the air box. Reconnect your mass airflow and intake air temp sensors. Drop the lid back into place. Secure the tabs. Install the breather line and you're good to go.
Thanks for watching. Visit us at 1AAuto.com for quality auto parts, fast and free shipping, and the best customer service in the industry.
AIA93101
In Stock
Product Reviews
4.0/ 5
★★★★★★★★★★
34 reviews
5★
68%
4★
6%
3★
0%
2★
9%
1★
18%
★★★★★August 6, 2026
Most important to know is don't drop it on your driveway
I cannot give a real review on this other than it came in good time. It did not work well and is likely because while holding it in my bum left hand in order to apply a thin smear of silicone grease to the O ring it slipped, from chest height, and hit the concrete driveway. Well.. I put it on my '99 Tahoe and this is after pulling the throttle bottle and cleaning out all the gunk, but it didn't work as I had hoped. Driving from about 30mph on up when I let my foot completely off the gas the car would go like as if cruise control had been engaged and I never use it. The truck just barreled right along. I pulled the Cruise Control fuse, just to make sure but no dice. NEVER drop sensitive components. Sorry this happened and in the interest of just getting back running sucked up the much higher cost of a unit from Advance Auto parts. :-(
★★★★★March 11, 2026
Very nice parts. Walk through videos. Thanks!
★★★★★September 7, 2025
Very Satisfied
Came very quick, highly recommend and will let others know. Item works very well.
★★★★★July 16, 2025
Fixed rough idle BUT...
stopped the rough idle BUT the response time was coming from throttle to idle was sluggish... it created an effect that made me have to press the brakes harder to stop the vehicle. I went back with the OE part and the performance is back to normal
★★★★★May 3, 2025
Did not work, when started went to 2500 rims for about 30 seconds before it idled down. I got one from local auto parts store which was more expensive but it worked correctly. Didn't try to return it because your return policy said no return on parts installed
★★★★★March 15, 2025
Good for another vehicle
The part looks great but it didn't work out well for my vehicle so I sent it back to your company. Thanks
★★★★★December 18, 2024
Fits 97 K1500 5.7
Perfect fit for my 97 k1500 5.7. Easy replacement.
★★★★★November 9, 2024
Good
Beautiful performance
★★★★★September 10, 2024
Made my truck idle very high. Wouldn't recommend
★★★★★June 19, 2024
Maybe I got a bad one
Failed after 3 days
Showing 1–10 of 34 reviews
Customer Q&A
Got a question about this part? Post it and get answers from our team.
JOHNJuly 11, 2026
I purchased this iac valve and after installing it and going through the relearn sequence my truck would creep up to 30 mph after taking my foot off the brake pedal??? Could the valve be bad? HELP. JOHN MASELL
There could be multiple reasons why you're having this particular problem. If you believe this part is to blame, please contact our customer service department for assistance! https://www.1aauto.com/about/contact
1A AutoJuly 13, 2026
RandyMay 24, 2022
Does the idle air control come with new screws?
The two units I purchased at the same time did come with screws, flat washer & locking washer X2 !
PSRB · June 26, 2025
Showing 1–2 of 2 questions
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WARNING: This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
