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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (Automatic Transaxle - 4T65-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Diagnostic Information And Procedures >> First and Second Gear Only - 2-3 Solenoid Stuck On

First and Second Gear Only - 2-3 Solenoid Stuck On

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
Checks Cause
DEFINITION: The transmission only provides first and second gear in Drive range. The shift pattern as the vehicle accelerates from a stop is 1-2-2-1. First gear ratio is 2.921:1 and second gear ratio is 1.568:1.
Control Valve Body Assembly
  • A faulty 2-3 shift solenoid valve assembly (315B) is stuck On.
  • Debris is found in the control valve body (301) or the control valve body spacer plate and gasket assembly (396)