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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6T70 - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> No Second and Sixth Gear

No Second and Sixth Gear

Checks Causes
26 Clutch Assembly
  • Inspect for damaged or worn 2-6 clutch plates (445-447).
  • Inspect for damaged, worn, broken, improper surface finish or sheared splines on the 2-6 clutch backing plate (448).
Reaction Carrier Assembly (467)
  • Inspect for stripped or sheared splines on the input ring gear.
  • Inspect for disengaged or broken input ring gear retainer.
Case Cover Assembly (403)
  • Inspect for damaged or broken 26 clutch piston (405) and piston seals damaged, worn or delaminating.
  • Inspect for broken or binding 26 clutch piston return spring (406).
  • Inspect for broken or disengaged 26 clutch piston return spring retainer (407).
  • Inspect for damaged, worn or improper surface finish in the piston bore (403).
Case Assembly (51) Inspect for stripped or sheared splines (51).