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Home >> Chevrolet >> 2013 >> Sonic RS, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Automatic Transmission - 6T30/6T40 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> No First and Reverse Gears

No First and Reverse Gears

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No First and Reverse Gears

Checks Causes
Low and Reverse Clutch Assembly (543)
  • Inspect for stripped or sheared internal or external splines on Low and Reverse Clutch Assembly (543)
  • Inspect for broken or disengaged retainer ring
Low and Reverse Clutch
  • Inspect for stripped or sheared splines on Low and Reverse Clutch Plates (545-547)
  • Inspect for damaged, deformed or improper surface finish on the Low and Reverse Clutch Plates (545-547)
  • Inspect for stripped or sheared splines on Low and Reverse Clutch Backing Plate (544)
  • Inspect for worn, damaged or debonding Low and Reverse Clutch Piston Seals (550)
  • Inspect for broken or fatigued Low and Reverse Clutch Piston Return Spring (549)
Low-Reverse and 1-2-3-4 Clutch Housing (551)
  • Inspect for disengaged or broken Low and Reverse Clutch Piston Spring Retainer (548)
  • Inspect for broken or deformed Low and Reverse Clutch Piston (550)
  • Inspect for damaged or improper surface finish in the piston bore