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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 >> Drive or Intermediate - Third Gear >> D or I Position: Driving in 3rd gear

D or I Position: Driving in 3rd gear

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.

The PCM turns shift solenoid (SS) valve C ON, and controls AT CPC solenoid valve A to release LS A pressure (56) in CPC valve A. SS valve A keeps OFF, and B stays ON. The release of LS A pressure (56) in CPC valve A releases CPC A pressure in the 2nd clutch pressure circuit. SS valve C is turned ON, and SH C pressure (SC) in the right side of shift valve C is released. SS valve C is then moved to the right side to switch the port of line pressure and CPC pressure. The 3rd clutch pressure is changed to line pressure mode, and the 3rd clutch is engaged securely. The 1st clutch is also engaged. No power is transmitted because of the one-way clutch.

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

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