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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Service, Diagnosis & Troubleshooting) >> Secondary Fluid Pump Overheats (M33 Only)

Secondary Fluid Pump Overheats (M33 Only)

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Secondary Fluid Pump Overheats (M33 Only)

Checks Causes
Low or high fluid level.
  • Restricted Secondary Fluid Pump filter or pump inlet.
  • Pump motor high current draw.
  • Worn secondary fluid pump motor bearings or worn pump gears.
Secondary Fluid Pump.