Transmission Indicators And Messages
WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
The following transmission related indicators and messages may be displayed on the Instrument Panel Cluster (IPC). Also, the malfunction indicator lamp (MIL) may be illuminated, indicating a powertrain DTC has set, along with an IPC message. If a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Service Transmission
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This message displays if there is a problem with the transmission or a DTC has been set.
- Shift Denied - Manual Mode
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This message displays when attempting to shift to a gear not appropriate for the vehicle speed and engine RPM.
- Transmission Hot
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This message displays when the transmission control module (TCM) detects a transmission fluid temperature of 132°C (270°F) or greater for 5 seconds.