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Home >> Chevrolet >> 2013 >> Sonic RS, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Automatic Transmission - 6T30/6T40 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0796 or P0797 (Gen 1) >> Circuit/System Description

Circuit/System Description

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The clutch pressure control solenoid 3 is part of the control solenoid valve assembly which has no serviceable components. Pressure control solenoid 3 regulates transmission fluid pressure to the R1/4-5-6 regulator valve which controls pressure to the reverse and low clutch and the 4-5-6 clutch. The transmission control module (TCM) calculates gear ratio based on the speed signals from the automatic transmission input shaft speed (ISS) sensor and the output shaft speed (OSS) sensor. The TCM compares the expected transmission gear ratio to the calculated gear ratio for each commanded gear.

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