Description
The IOB radio receiver is the module that runs GM’s 7 inch MyLink (Chevrolet) and IntelliLink (GMC) touch screen system from the 2016 to 2019 model years, and the medium duty Silverado kept it through 2024. It handles AM/FM, Bluetooth audio and calling, USB, Apple CarPlay and Android Auto, plus SiriusXM on vehicles built with it. Because it is a receiver that mounts behind the display rather than the display itself, the same family turns up in vehicles as different as a Spark and a Suburban.
Shopping for a Chevy or GMC factory radio replacement on a 2017-2018 Silverado, Sierra, Camaro, Colorado or Canyon with the 7 inch screen, a 2018 Equinox, a Spark, a Bolt EV or a medium duty Silverado? If the RPO label says IOB, this is the part.
We match the receiver to your build from your VIN, program it to that VIN, and bench test it before it ships, so it goes in plug and play with no dealer visit. Depending on your configuration it is either new GM stock or a refurbished unit, and the selector shows which before you pay.
Click here to see the GM part numbers this radio receiver replaces
Holding the number from the label on your old radio? Look for it below, digit by digit. Your VIN decides which receiver ships, so treat this as a search aid rather than a fitment chart.
42342521, 42473827, 42473829, 42481571, 42481573, 42504327, 42504329, 42518059, 42518067, 42518068, 42525185, 42532871, 42532873, 42532875, 42547495, 42554556, 42554557, 42554558, 42554560, 42554562, 42554613, 42554614, 42554616, 42554618, 42554620, 42554623, 42554624, 42554627, 42554679, 42554680, 42571029, 42583079, 42621253, 42645337, 42645338, 42645342, 42645351, 42645352, 42649077, 42670713, 42671556, 42676913, 42676914, 42680220, 42680221, 42680668, 42692813, 42702706, 42717972, 42724910, 42724911, 42728516, 42728517, 42743929, 42746460, 42759449, 42481528
Is your radio IOB? Three checks for 2016-2024 GM vehicles
1. Read the RPO label. Most of these vehicles have a SPID label in the glove box. Look for IOB. While you are there, look for U2K, which means the vehicle was built with SiriusXM. Newer builds may use a QR code label on the driver door jamb instead; our guide to GM RPO labels shows both.
2. Measure the screen diagonally. IOB uses a 7 inch touch screen on every vehicle except the Bolt EV, which pairs the IOB code with a 10.2 inch screen. An 8 inch screen means IO5 or IO6. A small display you cannot touch means IO3.
3. Keep the old radio’s label handy. On a few applications GM built two different receivers for the same vehicle, year and options. Only the part number printed on your current radio tells them apart, and the selector asks for it only in those cases.
| RPO | System | Uses this receiver? |
|---|---|---|
| IO3 | 4.2 inch display, no touch screen (the true base radio) | No |
| IOB | 7 inch MyLink / IntelliLink touch screen with CarPlay and Android Auto (10.2 inch on Bolt EV) | Yes |
| IO5 | 8 inch touch screen | No |
| IO6 | 8 inch touch screen with navigation | No |
| IOR, IOS, IOT | Chevrolet Infotainment 3 / GMC Infotainment System generation | No |
IOB radio fitment: 2016-2024 Chevrolet and GMC
Year and model only narrow things down. Nearly every vehicle below was sold with more than one radio, so yours must have been built with RPO IOB.
Chevrolet
- 2017-2021 Chevrolet Bolt EV
- 2017-2018 Chevrolet Camaro
- 2017-2018 Chevrolet Colorado
- 2018 Chevrolet Equinox
- 2017-2018 Chevrolet Silverado 1500
- 2019-2024 Chevrolet Silverado 4500HD / 5500HD / 6500HD (medium duty)
- 2016-2018 Chevrolet Spark
- 2016, 2017 and 2019 Chevrolet Suburban
- 2018 Chevrolet Tahoe
GMC
- 2017-2019 GMC Acadia
- 2017-2018 GMC Canyon
- 2017-2018 GMC Sierra 1500
Vehicles this IOB listing does not cover
- 2019 and newer Silverado 1500 and Sierra 1500, and other Infotainment 3 vehicles: these use IOR. See our IOR radio module.
- 8 inch IO5 and IO6 systems: different hardware. On K2 trucks and SUVs, the 8 inch system runs through our replacement HMI.
- GMC Yukon, Yukon XL, Cadillac Escalade and Escalade ESV: not listed.
- 2016 Silverado 1500 and Sierra 1500: GM’s catalog shows no IOB receiver for that year. If your label shows IOB, send us the VIN and we will check.
- 2016 Camaro and 2018 Buick Regal: both had IOB, but GM no longer supplies those receivers and no refurbished source exists.
- Chevrolet Bolt EUV: a different vehicle from the Bolt EV.
- Export vehicles: North American spec only.
How the selector picks your IOB receiver
Enter your VIN and the selector identifies the vehicle. For most IOB applications the only question left is whether it was built with SiriusXM. Answer for how it left the factory, not for whether you pay for the service today. A U2K vehicle needs the SiriusXM receiver even if the subscription lapsed years ago, and a vehicle built without U2K gets the non-satellite receiver. Because it is a like-for-like part, it will not add SiriusXM either.
Medium duty trucks: the VIN lookup currently resolves 2024 Silverado 4500HD, 5500HD and 6500HD trucks. For a 2019-2023 medium duty, send us the VIN and we will confirm the receiver.
New or refurbished: GM has stopped building most IOB receivers. Where new GM stock has run out, a refurbished unit is the only replacement left, so the condition follows your configuration. When your vehicle resolves to a refurbished receiver, the selector says so before you add it to the cart.
The RPO code is still on you. We cannot see the vehicle, so confirm IOB on the label before you order.
Installing an IOB receiver: programming, diagnosis and returns
Your receiver arrives programmed to your VIN and already tested. Disconnect the battery, swap the receiver and reconnect. There is nothing to program on your end.
Have the vehicle diagnosed by a GM dealer before ordering. Plenty of faults look like a dead radio without being one, and on IOB vehicles the display is a separate part from the receiver, so a black or blank screen can come from the display or its wiring instead.
Receivers are special order and not returnable. They usually ship within the posted processing time, though discontinued part numbers can take longer, and our 24-hour cancellation policy covers backordered units too. There is no core charge and nothing to send back.
Why order your IOB receiver from WAMS
We have worked on GM electronics for more than 20 years. We look up the right receiver from your VIN instead of asking you to decode part numbers, program it to your vehicle, and test it before it leaves our shop in Wixom, Michigan. Dealers, shops and locksmiths order the same way.
IOB radio receiver questions for 2016-2024 Chevrolet and GMC owners
What is the GM IOB radio?
IOB is the RPO code GM used for its midlevel connectivity radio: the 7 inch MyLink (Chevrolet) or IntelliLink (GMC) touch screen system with Bluetooth, USB, Apple CarPlay and Android Auto. The part on this page is the receiver module that runs that system, which GM catalogs as Radio Asm-Receiver.
Is IOB the base radio?
No. On these vehicles the base radio is IO3, a 4.2 inch display with no touch screen. IOB sits one step above it. The 8 inch systems are IO5 and IO6, and the later Infotainment 3 radio is IOR. None of them interchange with an IOB receiver.
Is the IOB receiver the same thing as the screen?
No. The receiver mounts behind the display and does the work. The display is a separate part and is not included with this receiver.
Will an IOB receiver fit my 2019 or newer Silverado 1500?
No. Light duty Silverado and Sierra pickups switched to the IOR radio for 2019, so those trucks need our IOR radio module. The Silverado 4500HD, 5500HD and 6500HD medium duty trucks kept IOB through 2024 and are covered here.
Do I need the SiriusXM version if I never subscribed?
Order by how the vehicle was built, not by your subscription. If the RPO label shows U2K, the vehicle left the factory with SiriusXM and needs the SiriusXM receiver even if the service was never activated. Without U2K it takes the non-satellite receiver. This replacement will not add SiriusXM to a vehicle built without it.
Is the receiver new or refurbished?
It depends on your configuration. GM has discontinued most IOB receivers, and for some builds a refurbished unit is the only replacement left. Once your configuration resolves, the selector tells you which condition ships before you check out.
Does it come programmed, or do I need a dealer?
It ships programmed to your VIN and tested on the bench. Installation is plug and play after you disconnect the battery, with no dealer visit.
The number on my old radio does not match what you ship. Is that a problem?
No. GM superseded these receivers many times, so the label on the old unit often carries an older number than the one in production now. Your VIN and options decide the correct receiver. The part number list near the top of this page includes the older numbers.
Does the Bolt EV use a 7 inch IOB radio?
No. The Bolt EV carries the IOB code with a 10.2 inch screen, which is why its receivers have their own part numbers. They do not interchange with the 7 inch units. The Bolt EUV is a different vehicle and is not covered.
Is there a core charge?
No core charge and no core return. We do not resell cores, so please recycle the old radio.
Reviews
There are no reviews yet.