General Motors Telematics Control Module Failure & Connectivity Defect Investigation

Current Investigations

General Motors Telematics Control Module Failure & Connectivity Defect

Scott Hirsch Law Group PLLC is currently investigating certain 2024–2026 General Motors vehicles (including Buick, Cadillac, Chevrolet, and GMC models) for widespread electronic defects involving the K73 Telematics Control Module (TCM). Internal hardware and software failures cause the module to enter what GM internal dealer bulletins describe as an "unrecoverable state," cutting off essential safety services like OnStar emergency crash notifications, disabling GPS navigation, draining 12-volt vehicle batteries, and disabling remote connectivity functions.

Owners Face Safety Hazards, False GPS Data, and Dead 12V Batteries

The Telematics Control Module acts as the central communications gateway for modern GM vehicles. When the module fails, motorists suddenly lose critical safety features, including Automatic Crash Response, SOS emergency calling, roadside assistance, and stolen vehicle tracking. In many cases, the OnStar overhead LED indicator misleadingly displays a normal green light even though the system is non-functional. Drivers also report erratic navigation where the vehicle's GPS places them miles away from their actual location, in turn corrupting Super Cruise semi-autonomous driving systems and speed limit displays. Furthermore, the malfunctioning module frequently triggers severe parasitic electrical drain on the vehicle's 12-volt battery, leaving owners stranded with dead batteries and no-start conditions.

GM Telematics Control Module (TCM) Defect Questionnaire

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GM Issues Service Bulletins but Avoids Formal Safety Recalls

General Motors addressed the issue through dealer-only service bulletins and updates (such as Service Update N262547330) and attempted over-the-air (OTA) software patches. However, vehicles whose modules have already collapsed into an unrecoverable state cannot connect wirelessly to receive software fixes, necessitating complete physical module replacements. Because replacement modules are placed on strict factory restrictions and face nationwide backorders, dealerships often hold vehicles for weeks or turn owners away. We are investigating whether General Motors manufactured and sold these vehicles with knowledge of defective telematics hardware while refusing to issue a mandatory federal safety recall.

Have you experienced OnStar failures, inaccurate GPS, battery drain, or telematics module errors in your GM vehicle?

Please take a moment to complete our GM Telematics Control Module Defect Questionnaire (click here). By sharing your experience, you help our legal team quickly understand what happened and assess your situation; Our team promptly reviews your submission, directly contacts you to gather additional information, and clarifies any inquiries you may have. Rest assured that your information will remain confidential.