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Home >> Buick >> 2011 >> Lucerne CX >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 4T65-E - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> Fourth Gear Only

Fourth Gear Only

Fourth Gear Only

Checks Cause
DEFINITION: The transmission only provides fourth gear in Drive range. The vehicle accelerates from a stop in fourth gear and does not upshift. Fourth gear ratio is 0.705:1.
Control Valve Body Assembly Debris is found in the control valve body (301) or the control valve body spacer plate and gasket assembly (396)
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