When GM ended support for map updates on HMI-based infotainment systems, it left owners of factory navigation–equipped vehicles without a clear path to obtain updated maps. GM’s last released map database was the 2023 North American map package, and after that point, no further updates were produced or made available through official service channels.
That update is no longer sold by GM, but WAMS continues to offer access to this final update where it is technically applicable. It’s important to understand what “applicable” means, because map update compatibility depends entirely on the specific HMI hardware generation and configuration inside your vehicle.
This Update Applies Only to HMI 2.5 Navigation Units (IO6)
Although many GM vehicles from 2014–2019 used HMI-based infotainment, only one specific hardware platform is capable of accepting the 2023 map database update:
HMI 2.5 Navigation (IO6) — 2016+ mid-cycle hardware with embedded factory navigation.
To avoid confusion, here is the exact breakdown:
Eligible for the 2023 Map Update
- HMI 2.5 Navigation (IO6)
- Used in 2016+ GM vehicles equipped from the factory with embedded navigation
- Confirmable via the vehicle’s RPO list (IO6)
- Either:
- by ordering a new programmed HMI 2.5 Navigation unit through WAMS, or
- by shipping your existing 2.5 Navigation HMI to WAMS for the map update service
Not Eligible
The following HMI versions cannot accept the 2023 map update under any circumstances:
- HMI 2.0 (2014–2015)
- HMI 2.5 Non-Navigation (IO5) — these units never contained onboard map storage
- HMI 1.x / early CUE systems (2013–2014)
- CSM platforms (3.x+) used in late-2018+ and Global B vehicles
- Any system not built from the factory with IO6 navigation
These hardware limitations are foundational — the map database format and storage structure for IO6 navigation simply does not exist on any of the above systems.
Why This Matters
GM’s decision to discontinue map updates left a large number of IO6-equipped GM owners without a path to modern map data, despite the fact that their hardware is fully capable of using the last available release. Because WAMS works directly with new OEM units and factory calibration tooling, we are able to continue providing the final 2023 map update for as long as hardware and tooling support allow.
For owners who value:
- improved routing data
- updated roads and POIs
- and keeping factory navigation functional as long as possiblethis update remains a worthwhile investment — especially given that no future map releases will ever be produced.
Two Ways to Receive the 2023 Map Update
- Ship your HMI 2.5 Navigation unit to WAMS We will apply the final 2023 map database, verify unit health, and return it programmed to your VIN.
- Order a replacement new HMI 2.5 Navigation unit from WAMS The new unit will arrive:
- VIN-programmed
- running the latest software
- updated to the final 2023 maps
- and backed by full GM warranty
This is often the preferred route for customers with aging or intermittently failing HMIs.
A Final Note on Compatibility
If your vehicle is IO5 (non-navigation) or an earlier HMI variant, there is no path to add this map update — and retrofitting navigation is not supported using this replacement service. For those platforms, WAMS offers other upgrade paths designed for improved performance and functionality, but navigation database updates are strictly limited to IO6 HMI 2.5.
Frequently Asked Questions
How do I know if my vehicle has an HMI 2.5 Navigation unit?
Check your vehicle’s RPO list for IO6. Only IO6 units are factory navigation and capable of accepting the 2023 map update. IO5 vehicles do not have embedded maps, and HMI 2.0 units cannot use this update.
Can I send in my existing HMI to have the 2023 map update installed?
Yes. If your unit is an HMI 2.5 Navigation module, you may ship it to WAMS to receive the final 2023 North American map database update.
Does this update work on HMI 2.0 or non-navigation systems?
No. Only HMI 2.5 Navigation (IO6) units support the 2023 map update. HMI 2.0 hardware and IO5 non-navigation units are not compatible.
Is GM going to release any newer map updates?
No. GM discontinued all map update production for HMI systems. The 2023 North American database is the final revision.
Can I upgrade from IO5 to IO6 to gain navigation mapping?
No. Navigation retrofits are not supported through this map update service. IO5 units lack the hardware needed to store and run embedded navigation databases.