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Home >> Chevrolet >> 2010 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 424 (Automatic Transmission - 6T75 (M7V M7X) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> No First, Second, Third, and Fourth Gear

No First, Second, Third, and Fourth Gear

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
Checks Causes
1-2-3-4 Clutch Assembly
  • Inspect for damaged or worn 1-2-3-4 clutch plates (456-458).
  • Inspect for damaged or broken 1-2-3-4 clutch piston (461) and piston seals damaged, worn or delaminating.
  • Inspect for broken or binding 1-2-3-4 clutch piston return spring (460).
  • Inspect for broken or disengaged 1-2-3-4 clutch piston return spring retainer (459).
  • Inspect for broken or fatigued 1-2-3-4 clutch wave plate (458).
Output Sun Gear Assembly (457) Inspect for stripped or sheared splines on the output sun gear shell.
Reaction Carrier Assembly (467)
  • Inspect for stripped or sheared splines on the input ring gear.
  • Inspect for disengaged or broken input ring gear retainer.
Output Carrier Assembly (474)
  • Low/reverse clutch assembly (OWC) (455) splines sheared or broken.
  • Inspect for disengaged or broken reaction ring gear retainer.
Case Assembly (51) Inspect for worn or damaged case splines or retainer ring grooves.