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Home >> Buick >> 2019 >> Regal TourX Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 140 (Automatic Transmission - 9T50 (M3D) And 9T60 (M3T) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> No Drive in All Ranges

No Drive in All Ranges

WARNING: This page is about a different car, the 2020 Buick Regal and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
Checks Causes
Automatic Transmission Case (19)
  • Inspect for cracked or broken Case (19).
  • Inspect for stripped or sheared splines.
  • Inspect for binding Manual Shift Detent Lever Assembly (709).
  • Inspect for missing Manual Shift Detent Lever Pin (710).
  • Inspect for interference or binding Park Pawl Actuator Assembly (708).
  • Inspect for broken or disengaged 1-2-3-4-5-6 Clutch Piston Housing Return Ring (523).
  • Inspect for loose or damaged case bushing.
  • Inspect Automatic Transmission Fluid Pump Shaft Seal (311) for damage.
Torque Converter (14)
  • Inspect for stripped or sheared splines on Turbine Shaft.
  • Inspect for missing Torque Converter to Flywheel bolts.
Torque Converter and Differential Housing (13)
  • Inspect for stripped or sheared Front Differential Ring Gear (207) Splines.
  • Inspect for broken or disengaged Front Differential Rear Gear Retainer (206).
  • Inspect for loose, missing or broken Torque Converter and Differential Housing bolts (16).
  • Inspect for loose, missing or broken Automatic Transmission Fluid Pump Cover Bolts (200, 211).
5-7-Reverse and 6-7-8-9 Clutch Housing (530)
  • Inspect for damaged or broken Input Sun Gear Thrust Bearing (550, 553).
  • Inspect for stripped or sheared splines on the Turbine Shaft to the 5-7-Reverse and 6-7-8-9 Clutch Housing (547).
Automatic Transmission Fluid Pump Assembly (201)
  • Inspect for fluid leaks/improper fluid level.
  • Inspect for leaking Fluid Outlet Seal Assembly (24).
  • Inspect for loose or missing Automatic Transmission Fluid Pump Cover Bolt (312).
  • Inspect for damaged, restricted or improperly installed Automatic Transmission Fluid Filter (203).
  • Inspect for damaged or leaking Automatic Transmission Fluid Filter Seal (202).
  • Inspect for broken or seized Automatic Transmission Fluid Pump (315).
Input Carrier Assembly (552)
  • Inspect for stripped or sheared castle splines to ring gear.
  • Inspect for improperly installed carrier pinion gear pins.
  • Inspect for damaged or broken Pinion Gears.
  • Inspect for stripped or sheared splines on the Input Sun Gear (551).
  • Inspect for damaged or broken Output Carrier (555).
  • Inspect for broken or disengaged Output Internal Gear Retainer Ring.
  • Inspect for damaged or broken Input Carrier Thrust Bearing (549) and Output Carrier Thrust Bearing (554).
  • Inspect for damaged or broken Input Sun Gear Thrust Bearing (550, 553).
Overdrive Carrier (546)
  • Inspect for stripped or sheared splines.
Output Carrier Assembly (555)
  • Inspect for damaged or broken Input Sun Gear Thrust Bearings (550, 553).
  • Inspect for damaged or broken Pinion Gear teeth.
  • Inspect for damaged or broken Input Carrier Thrust Bearings (549).
  • Inspect for broken or damaged Output Internal Gear.
Output Sun Gear Assembly (555)
  • Inspect for broken Output Sun Gear Assembly (555) hub or weld.
1-Reverse and 1-2-3-4-5-6 Clutch Piston Housing Inspect for disengaged or broken 1-2-3-4-5-6 Clutch Backing Plate Retaining Ring (599).
Drive Link (233)
  • Inspect for broken, worn or damaged Drive Link Assembly (233).
  • Inspect for broken, worn or damaged Drive Sprocket (234).
  • Inspect for broken, worn or damaged Driven Sprocket Assembly (241).
  • Inspect for broken Drive Gear Hub (231).
Front Differential Carrier (238)
  • Inspect for stripped or sheared splines on Differential Side Gear.
  • Inspect for stripped or sheared splines Final Drive Sun Gear (230).
  • Inspect for stripped or sheared splines Differential Carrier to PTU (AWD only).
  • Inspect for stripped broken or disengaged Final Drive Retainer (581).
  • Inspect for damaged or broken Pinion Gear teeth.
  • Inspect for damaged or broken Final Drive Rollers (585).
  • Inspect for broken, worn or damaged Final Drive Inner and Outer Thrust Washers (584).
Control Solenoid (w/Body and TCM) Valve Assembly
  • Check that the Manual Valve (432) is engaged with Manual Shift Detent Lever Assembly (609).
  • Inspect the Control Solenoid (w/Body and TCM) Valve Assembly (7) and verify that it is functioning properly.