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Home >> Chevrolet >> 2017 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Automatic Transmission - 9T50 (M3E) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Whine/Growl Noise

Whine/Growl Noise

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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