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Home >> Buick >> 2011 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Automatic Transmission - 4T80-E - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> No Second Gear D2, D3

No Second Gear D2, D3

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No Second Gear D2, D3

Checks Causes
1-2 Shift Solenoid Valve Stuck ON
1-2 Shift Valve Stuck in 1st gear
2nd Clutch Piston/Seals
  • Cracked or damaged
  • Rolled, damaged or leaking
2nd Clutch Plates Burned or damaged
2nd Clutch Return Springs Broken, out of position
2nd Sprag Damaged, not holding