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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1536 (Automatic Transmission - 5AT - Introduction (2 Of 2)) >> Description and Operation >> Automatic Transmission Hydraulic Diagrams >> Reverse >> Reverse Inhibitor Control

Reverse Inhibitor Control

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

When R position is selected, while the vehicle is moving forward at speeds over 6 mph (10 km/h), the PCM outputs to turn the SS valves A and C ON, and SS valve B stays ON. The reverse CPC valve is moved to the right side and covers the port to stop the line pressure (3') to the servo valve. Line pressure (3') is not applied to the servo valve, and the 5th clutch pressure (50) is not applied to the 5th clutch, as a result, power is not transmitted to the reverse direction.

When used, "left" or "right" indicates direction on the hydraulic circuit.

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