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Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–10 Limp Home Mode Description If a major electrical system failure occurs which could affect vehicle safety or damage the transmission during normal • The pressure control solenoid is off and the line pressure is at maximum to minimise clutch slippage. • The TCC solenoid is off, therefore the torque converter clutch is disabled. • The two shift solenoids are turned off. The transmission will operate in fourth gear if the vehicle has successfully In limp home mode, the gear selector lever is ineffective at selecting forward gear ranges. In third or fourth gear, heat 1.3 Transmission Indicators and Messages For information pertaining to the instrument cluster and the transmission information it displays, refer to the RA Rodeo 1.4 Electronic Component Description For all other electrical components not covered in this section, refer to General Motors Powertrain Group Electronically Transmission Control Module (TCM) The Transmission Control Module (TCM) is located under the instrument panel, next to the brake pedal assembly and To access the connector for diagnosis: 1 Ensure the ignition switch is in the OFF position. 2 Disconnect the connector (1) from the transmission control module (TCM) (2) as follows, refer to Figure 7C2 – 2: a remove the securing pin (3), b press the locking tab and swing the lever (4) to free the connector, c remove the connector. |