GM software update targets Wi-Fi and GPS dropouts on 2023-2024 Escalades

Owners of 2023 and 2024 Cadillac Escalades whose Wi-Fi hotspot, GPS or connected services keep dropping out now have a software fix to ask for. A General Motors preliminary bulletin, PIT6529B, filed with the National Highway Traffic Safety Administration on September 2, 2026, traces the problem to the OnStar module and tells dealers to install over-the-air software version 12.97 before they consider replacing any hardware.

The problem

The bulletin covers 2023-2024 Escalade and Escalade ESV models with OnStar, option code UE1. The same fix applies to the 2023-2024 Chevrolet Tahoe and Suburban and GMC Yukon and Yukon XL, and to the 2023-2026 Chevrolet Silverado 1500 and GMC Sierra 1500. Owners may notice that the vehicle loses its connection, that GPS stops working or that the in-car Wi-Fi disappears. The faults can come and go, and the system may recover by itself.

GM blames a software anomaly in the K73 telematics control module, the OnStar computer that handles cellular data and location. The bulletin was created in June, gained labor times in July and had its model list updated on August 26.

How dealers fix it

GM lays out a fixed order of steps and says no parts should be replaced unless the procedure calls for it:

1. Test OnStar. With the vehicle parked where it gets a good signal, the technician presses the blue OnStar button. If no advisor answers, the procedure jumps straight to replacing the module.
2. Check the software level. Any of five earlier versions, from 12.64 to 12.96, qualifies for the update. A vehicle already on 12.97 does not need it and goes to standard diagnosis.
3. Check the 12-volt battery. It must be at least 70% charged with no battery-related trouble codes, because a low charge blocks over-the-air installs.
4. Install 12.97 over the air. If the package is already waiting in the vehicle, the technician installs it from the settings menu. If not, the dealer emails GM to have it pushed to the vehicle. GM promises replies within four hours on weekdays, and the download can take up to 15 minutes.

If the symptoms persist after the update, diagnosis continues and can end in a new module. Those modules are on restriction, so the dealer has to answer GM's questions before an order is filled. The update itself is billed as about half an hour of labor under the bumper-to-bumper warranty.

One instruction stands out. GM tells technicians to unplug any dongle or diagnostic interface from the OBD-II port first, because the over-the-air download and install will not happen while one is connected.

How it differs from the 2027 bulletins

GM has separate bulletins for 2027 models that lose OnStar connectivity, including the 2027 Vistiq, where the current remedy is a module reset while engineering keeps looking for a cause. For the 2023-2024 Escalade, GM already has a software release, and the dealer can install it in one visit.

Owner brief

What it means for owners

• Who is affected: owners of a 2023 or 2024 Escalade or Escalade ESV whose hotspot, navigation or connected services drop out, even if they come back later.
• Try the update yourself first. Look for a pending update in the vehicle settings and install it while parked with good signal. If the vehicle is already on 12.97 and the problem continues, book a visit.
• Clear the port. Unplug anything plugged into the OBD-II port before starting an update.
• Keep the 12-volt battery healthy. Long stretches of short trips can leave it below the 70% charge the update needs.
• Mind the warranty. Cadillac's bumper-to-bumper coverage runs four years or 50,000 miles, so some 2023 models may already be past it. Ask for a quote before any work beyond the update.
• Have a backup. While the module is offline, OnStar services may not work, so keep a charged phone within reach on long drives.
• Not a recall. You can still check your VIN for open recalls at nhtsa.gov/recalls.

Dashbird tip

Before accepting an over-the-air update, unplug any OBD adapter from the port, including the one you use with Dashbird, since GM says the install will not run with a device connected.