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Diagnostic Aids

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

When attempting to set solenoid electrical DTCs, ensure the transmission control module is warmed up and the transmission is operated long enough to ensure a 3°C (5°F) increase in TCM temperature. This will place the transmission control module under the optimal conditions to test solenoid electrical DTCs.

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