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Home >> Chevrolet >> 2012 >> Suburban C2500 >> Repair and Diagnosis >> External Pages >> Different car >> Section 1896 (Automatic Transmission - 2ML70 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P1824, P182A-P182F, P1838, or P1839 >> Diagnostic Aids

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.

The transmission internal mode switch connects electrically to the control solenoid valve assembly and is serviced separately from the control solenoid valve assembly. Inspect the transmission internal mode switch, harness, connector, and control solenoid valve assembly pins for metallic debris. Use a terminal test kit for any test that requires probing the control solenoid valve assembly harness connector or a component harness connector. The transmission internal mode switch assembly can be damaged by currents exceeding 2 mA. Test the transmission internal mode switch assembly for an open condition whenever a short to voltage condition is observed.

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