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Home >> Cadillac >> 2017 >> XTS Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6T70 (M7U M7W), 6T75 (M7V), Or 6T80 (Mhm) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> Whine/Growl Noise

Whine/Growl Noise

Checks Causes
Front Differential Drive Pinion Gear Assembly (23)
  • Inspect for worn wheel bearings or axles.
  • Inspect for proper Taper Roller Bearing Pre-load
  • Inspect for loose or worn transfer Driven Gear
Differential Assembly (486)
  • Inspect for worn wheel bearings or axles.
  • Inspect for proper Taper Roller Bearing Pre-load
  • Inspect for worn or damaged Side Gear Thrust Washer (492) or Pinion Gear Thrust Washer (488)
  • Inspect for loose or worn Side Gear Axle Splines
Input Carrier Assembly (470)
  • 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
Output Carrier Assembly (474)
  • 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
Reaction Carrier Assembly (467)
  • 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
Fluid Pump Assembly (203)
  • Inspect for proper fluid level
  • Inspect for loose or worn Drive Link Assembly (218)
  • Inspect for worn Driven Sprocket Thrust Washer (214) or Drive Sprocket Thrust Washers (219, 220)
  • Inspect for leaking Transfer Drive Gear Support Seal (213), Pump Fluid Outlet Seal Assembly (57) or Filter Seal (202)
  • Inspect for worn or damaged Fluid Pump Shaft Splines
3 - 5 - Reverse Clutch Assembly
  • Inspect for inadequate Clutch Plate Clearance
  • Inspect for loose or worn Clutch Plate Splines (423 - 425)
  • Inspect for loose or worn Clutch Spring Retainer (427)
  • Inspect for loose Speed Sensor Reluctor Wheel (416) or Retainer (415)
4 - 5 - 6 Clutch Assembly
  • Inspect for inadequate Clutch Plate Clearance
  • Inspect for loose or worn Clutch Plate Splines (449, 440)
  • Inspect for loose or worn Clutch Spring Retainer (442)
  • Inspect for loose or worn 3 - 5 - Reverse/4 - 5 - 6 Clutch Housing Bushing
1 - 2 - 3 - 4 Clutch Assembly
  • Inspect for inadequate Clutch Plate Clearance
  • Inspect for loose or worn Clutch Plate Splines (456 - 458)
  • Inspect for loose or worn Clutch Spring Retainer (459)
Low and Reverse Clutch Assembly (OWC) (455)
  • Inspect for loose or worn Splines (455)
  • Inspect for loose or worn Retainer (454)
Low and Reverse Clutch
  • Inspect for inadequate Clutch Plate Clearance
  • Inspect for loose or worn Clutch Plate Splines (449 - 452)
  • Inspect for loose or worn Clutch Spring Retainer (410)
2 - 6 Clutch Assembly
  • Inspect for inadequate Clutch Plate Clearance
  • Inspect for loose or worn Clutch Plate Splines (445 - 447)
  • Inspect for loose or worn Clutch Spring Retainer (407)
Case Assembly (51)
  • Inspect for loose or broken Transmission Mount Bolts
  • Inspect for loose Torque Converter and Differential Housing Bolts (26)
  • Inspect for loose or broken Fluid Trough Bolts (56)