LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Automatic Transmission - 9T45 (M3U) Or 9T50 (M3D M3H) - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> No Reverse Gear

No Reverse Gear

WARNING: This page is about a different variant/trim than selected.
Checks Causes
Control Valve Body (23)
  • Inspect the 3-8 Clutch Regulator Valve (487) and Control Valve Body Ball Check Valve (453) for debris and stickiness.
  • Inspect the Clutch Selector Valve (467) and the Actuator Feed Limit Valve (451) for debris and stickiness.
Automatic Transmission Case (19)
  • Inspect the Input Shaft Support (54) for missing or damaged Fluid Seal Rings (56).
5-7-Reverse and 6-7-8-9 Clutch Housing (516)
  • Inspect for damaged, stripped or sheared splines on 5-7-Reverse Clutch Plate (579-580), 5-7-Reverse Clutch Backing Plate (581).
  • Inspect for stripped or sheared splines on 5-7-Reverse and 6-7-8-9 Clutch Housing (567) to Turbine Shaft (547).
  • Inspect for damage, improper surface finish, porosity, deformed or unbalanced 3-5 Rev/4-5-6 Housing (516).
  • Inspect for damaged, worn, loose or seized hub bushing in the 5-7-Reverse and 6-7-8-9 Clutch Housing (567).
  • Inspect for broken, porous or improper surface finish or plugged oil passages of the 5-7-Reverse and 6-7-8-9 Clutch Housing (567).
  • Inspect for failure of the 6-7-8-9 and 5-7-Reverse Clutch Housing Thrust Bearing (515).
  • Inspect for disengaged or broken 5-7-Reverse Clutch Backing Plate Retaining Ring (582).
  • Inspect for damaged, worn or leaking 3-5 Reverse Clutch Piston Seals (564 - 566).
  • Inspect for damaged or broken 5-7-Reverse and 6-7-8-9 Clutch Housing (567).
  • Inspect for warped, damaged, improper surface finish or debonding 3-5 Reverse Clutch Piston (562).
  • Inspect for broken or fatigued 3-5-Reverse Clutch Piston Retainer Spring (563).
  • Inspect for disengaged or broken Automatic Transmission Input Shaft Speed Sensor Reluctor Ring Retaining Ring (560).
  • Inspect for broken Automatic Transmission Input Shaft Speed Sensor Reluctor Wheel (561).