DT Codes . com
DTC - Diagnostic Trouble Codes information

P0785

Powertrain Codes

P0785 - CHEVROLET - 3-2 Shift Solenoid Circuit Electrical

Symptoms

- Engine Light ON (or Service Engine Soon Warning Light) - Transmission may not shift to the next gear.

Possible Causes

- Low transmission fluid level - Dirty transmission fluid - Faulty shifting solenoid valve - Shifting solenoid valve harness or connectors - Shifting solenoid valve circuit is open or shorted

When Detected

The P0785 code is detected when the PCM detects a continuous open, short to ground or short to power in the 3-2 SS valve assembly circuit

Description

The 3-2 Shift Solenoid valve assembly is a normally-closed, and the controls the 3-2 downshift. The Powertrain Control Module (PCM) controls the solenoid by providing a ground path. During a 3-2 downshift, the 2-4 band applies as the 3-4 clutch releases. The PCM varies the timing between the 3-4 clutch release and the 2-4 band apply depending on the vehicle speed and the throttle position.