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Home >> Chevrolet >> 2012 >> Corvette ZR-1, Trans Mfr CD 6L95M/MH3 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Automatic Transmission - 6L80 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> No Second and Sixth Gear

No Second and Sixth Gear

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No Second and Sixth Gear

Checks Causes
Automatic Transmission Fluid Pan (29) Verify proper fluid level and condition, inspect transmission assembly for leaks.
Control Valve Upper Body (304) Inspect for sticking, damaged, or worn 2-6 clutch regulator valve (334) and spring (326).
Control Valve Solenoid Body (314) Pressure control solenoid 4 commanded/failed LOW (off) or leaking - Perform solenoid valve assembly function test. Refer to Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test .
Center Support (67)
  • Inspect for proper installation of the 2-6 clutch return spring retaining ring (455).
  • Inspect for damaged 2-6 clutch piston assembly (457), spring (456), retaining ring (455), and center support housing (459).
  • Inspect for worn or damaged 2-6 clutch plates (451 - 453).
Center Support Fluid Passage Seal (20)
  • Inspect for worn, cut, or damaged seals.
  • Inspect for proper seal (20) size (6L45/50E MYA/MYB) vs (6L80/90E MYC/MYD).
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