Some Cadillac Escalade IQ Units Missing High Voltage Plug

General Motors has issued a new Service Update impacting the all-electric Cadillac Escalade IQ luxury SUV, addressing a potential issue involving a missing component in the vehicle’s high-voltage battery system.

The Service Update applies to select Escalade IQ units manufactured between the 2025 and 2026 model years, as well as the 2026 Escalade IQL. The repair is intended to be completed during routine service, and does not require an in-person visit to the dealer. Please note, this is not a recall.

According to official service bulletin N252529080, some affected vehicles may have been built without a special connector installed in the battery pack’s high-voltage connector. This plug is designed to properly seal and secure electrical connection parts in rechargeable energy storage systems (RESS). If it is missing, the connection may not meet original specifications.

To resolve this issue, dealers are instructed to check the relevant connectors on the battery and confirm whether they are present. If a component is missing or misconfigured, a technician will install the correct connector connector using specified service parts. This procedure also includes checking the cable elements and associated connectors to ensure they are properly installed and protected. Only GM technicians with proper EV training can perform this repair.

Service updates apply to vehicles currently in dealer inventory and customer vehicles coming in for service. The bulletin also points out that only a small percentage of vehicles are expected to require replacement parts (less than 2 percent of the affected population, which also includes some other GM EV brands).

As a reminder, the Cadillac Escalade IQ was launched for the 2025 model year and uses the GM BT1 platform. Motivation is provided by a dual-motor powertrain that produces approximately 650 horsepower and 615 pound-feet of torque. Vehicle production takes place at GM’s Factory Zero plant in Michigan.