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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 >> Whine/Growl Noise

Whine/Growl Noise

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
Front Differential Carrier (238)
  • Inspect for worn wheel bearings or axles.
  • Inspect for worn or damaged Side Gear Thrust Washer or Pinion Gear Thrust Washer
  • Inspect for loose or worn Side Gear Axle Splines
  • Inspect for damaged or worn Side Gear
  • Inspect for worn or damaged Final Drive Inner and Outer Washers
  • Inspect for loose, damaged or worn Front Differential Carrier Thrust Bearings
  • Inspect for broken, worn or disengaged Final Drive Pinion Pin Retainer
  • Inspect for damaged or worn Pinion Gears
Drive Link (233)
  • Inspect for worn, loose or damaged links
  • Inspect for broken, worn or loose Drive Link Lubricant Scoop (60)
Drive Sprocket (234)
  • Inspect for improper Drive Sprocket (234) tooth surface finish
  • Inspect for broken or damaged Drive Sprocket (234) teeth
  • Inspect for worn or damaged Output Sun Gear Thrust Bearings (230)
  • Inspect for worn or damaged Output Carrier Transfer Drive Gear Hub Assembly splines (231)
  • Inspect for loose, worn or damaged Output Carrier Transfer Drive Gear Hub Assembly bushing
Driven Sprocket (241)
  • Inspect for worn, binding or damaged Driven Sprocket Bearing Assembly (242)
  • Inspect for worn or damaged Driven Sprocket Ball Bearing Assembly
  • Inspect for improper Driven Sprocket (241) tooth surface finish
  • Inspect for broken or damaged Driven Sprocket (241) teeth
Input Carrier Assembly (552)
  • Inspect for pitted/spalled Pinion Gear teeth
  • Inspect for worn or damaged Pinion Gear Thrust Washers and Bushings
  • Inspect for worn or damaged Pinion Gears, Pins or Needle Bearings
  • Inspect for loose or broken Hub and Ring Gear
  • Inspect for loose or broken Output Internal Gear Retainer
  • Inspect for loose or worn Sun Gear Thrust Bearings (550, 553)
Output Carrier Transfer Drive Gear Hub Assembly (231)
  • Inspect for worn or damaged Pinion Gear Thrust Washers and Bushings
  • Inspect for worn or damaged Pinion Gears, Pins or Needle Bearings
  • Inspect for loose Hub and Ring Gear
Overdrive and Reaction with Input Internal Gear Carrier
  • Inspect for worn or damaged Pinion Gear Thrust Washers and Bushings
  • Inspect for worn or damaged Pinion Gears, Pins or Needle Bearings
  • Inspect for loose hub and Ring Gear
  • Inspect for worn or damaged Overdrive Sun Gear Thrust Bearing (544)
Automatic Transmission Fluid Pump Assembly (201)
  • Inspect for proper fluid level
  • Inspect for leaking Automatic Transmission Fluid Filter Seal (202)
1-2-3-4-5-6 Clutch
  • Inspect for inadequate Clutch Plate Clearance
  • Inspect for stripped or sheared Clutch Plate Splines (595 - 599)
  • Inspect for loose or worn 1-2-3-4-5-6 Clutch Backing Plate Retaining Ring (599)
2-9 Clutch
  • Inspect for inadequate Clutch Plate Clearance
  • Inspect for stripped or sheared Clutch Plate Splines (517 - 519)
  • Inspect for loose or worn 1-2-3-4-5-6 Clutch Piston Housing Return Ring (523)
3-8 Clutch
  • Inspect for inadequate Clutch Plate Clearance
  • Inspect for stripped or sheared Clutch Plate Splines (513 - 514)
  • Inspect for loose or worn 3-8 Clutch Spring Retaining Ring (511)
  • Inspect for loose Automatic Transmission Input Shaft Speed Sensor Reluctor Wheel (561) or Retainer (560)
4th Clutch
  • Inspect for inadequate Clutch Plate Clearance
  • Inspect for stripped or sheared Clutch Plate Splines (540 - 542)
5-7-Reverse Clutch
  • Inspect for inadequate Clutch Plate Clearance
  • Inspect for stripped or sheared Clutch Plate Splines (578 - 581)
  • Inspect for loose or worn 5-7-Reverse Clutch Backing Plate Retaining Ring (582)
6-7-8-9 Clutch
  • Inspect for inadequate Clutch Plate Clearance
  • Inspect for stripped or sheared Clutch Plate Splines (574 - 576)
  • Inspect for loose or worn 6-7-8-9 Clutch Backing Plate Retaining Ring (577)
Automatic Transmission Case (19)
  • Inspect for loose or broken Transmission Mount Bolts
  • Inspect for loose Torque Converter and Differential Housing Bolts (16)
  • Inspect for loose, worn or damaged differential bushing
  • Inspect for loose or broken Input Shaft Support Bolts (55)
  • Inspect for loose or broken Front Differential Carrier Baffle Bolts (62)
  • Inspect for stripped or sheared splines
  • Inspect for loose, worn or damaged bushing
Torque Converter Housing (13)
  • Inspect for loose or broken Front Differential Ring Gear Retainer (206)
  • Inspect for loose, worn or damaged differential bushing
  • Inspect for loose or broken Pinion Gear Shaft Retainer Pin
  • Inspect for loose or broken Front Differential Carrier Baffle Bolts (204)
  • Inspect for loose or broken Automatic Transmission Fluid Pump Cover Bolt (200)
  • Inspect for loose Torque Converter and Differential Housing Bolts (16)
  • Inspect for loose, worn or damaged bushing
Control Valve Body Cover (3) Inspect for loose, missing or broken Valve Body Cover Bolts (1)
Torque Converter (14)
  • Inspect for improper alignment of Torque Converter to the Crankshaft
  • Inspect for ballooning of the Torque Converter
Front Differential Carrier (238)
  • Inspect for worn or damaged Front Differential Carrier (238)
  • Inspect for worn or damaged Pinion Pins
  • Inspect for broken, worn or damaged Differential Sun Gear Bearing or Driven Sprocket Bearing
  • Inspect for worn or damaged Differential Side Gear teeth, Final Drive Pinion Gear teeth or Final Drive Sun Gear teeth
  • Inspect for worn or damaged Differential Side Gear Thrust Washers or Final Drive Inner and Outer Washers
  • Inspect for worn or damaged Final Drive Rollers
  • Inspect for broken or damaged Differential Pinion Gear Shaft Retainer