No Fourth, Fifth, Sixth, Seventh, Eighth, Ninth, Tenth, or Reverse Gear

Automatic Transmission - 10L80 MHS MQC | Diagnostic Information and Procedures | Document ID: 4578454 No Fourth, Fifth, Sixth, Seventh, Eighth, Ninth, Tenth, or Reverse Gear

Checks	Causes
4-5-6-7-8-9-10-Reverse Clutch Assembly	Inspect for damaged or worn 4-5-6-7-8-9-10-Reverse clutch plates (530, 531). Inspect for damaged 4-5-6-7-8-9-10-Reverse clutch piston (524), return spring (525), piston dam (526). Inspect for damaged 4-5-6-7-8-9-10-Reverse clutch piston dam retaining ring (527). Inspect for damaged 4-5-6-7-8-9-10-Reverse clutch piston stop (523). Inspect for cut, worn or damaged 4-5-6-7-8-9-10- Reverse clutch piston seals (521, 522). Inspect for improper selective4-5-6-7-8-9-10-Reverse clutch backing plate retaining ring (533). Inspect for improper 4-5-6-7-8-9-10-Reverse clutch backing plate retaining ring (534, 535). Inspect for damaged 4-5-6-7-8-9-10-Reverse clutch backing plate (532). Inspect for worn splines on backing plate. Inspect for damaged 4-5-6-7-8-9-10-Reverse clutch apply plate (528). Inspect for worn splines on apply plate. Inspect for damaged triple clutch housing (520).

Checks

Causes

4-5-6-7-8-9-10-Reverse Clutch Assembly

Inspect for damaged or worn 4-5-6-7-8-9-10-Reverse clutch plates (530, 531). Inspect for damaged 4-5-6-7-8-9-10-Reverse clutch piston (524), return spring (525), piston dam (526). Inspect for damaged 4-5-6-7-8-9-10-Reverse clutch piston dam retaining ring (527). Inspect for damaged 4-5-6-7-8-9-10-Reverse clutch piston stop (523). Inspect for cut, worn or damaged 4-5-6-7-8-9-10- Reverse clutch piston seals (521, 522). Inspect for improper selective4-5-6-7-8-9-10-Reverse clutch backing plate retaining ring (533). Inspect for improper 4-5-6-7-8-9-10-Reverse clutch backing plate retaining ring (534, 535). Inspect for damaged 4-5-6-7-8-9-10-Reverse clutch backing plate (532). Inspect for worn splines on backing plate. Inspect for damaged 4-5-6-7-8-9-10-Reverse clutch apply plate (528). Inspect for worn splines on apply plate. Inspect for damaged triple clutch housing (520).