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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1774 (Automatic Transaxle - AF33-5 (DTC P0562 - P0762)) >> Diagnostic Information & Procedures >> DTC P0762 >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

The 1-2, 2-3, reverse shift solenoid valve (S3) is a normally-closed exhaust valve. The transmission control module (TCM) controls the 1-2, 2-3, reverse shift solenoid valve (S3) with an internal driver that pulls the solenoid control circuit to voltage. During a 3-4 gear shift, the TCM will turn the 1-2, 2-3, reverse shift solenoid valve (S3) OFF. If the 1-2, 2-3, reverse shift solenoid valve (S3) does not close, the U2 shift valve (392) will not move, and a 1.89:1 gear ratio will result in 4th gear, and a 1.45:1 gear ratio will result in 5th gear.

If the TCM detects a 1.89:1 gear ratio in 4th gear, or a 1.45:1 gear ratio in 5th gear, then DTC P0762 sets. DTC P0762 is a type A DTC.

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