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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) >> High or Low Secondary Fluid Pump Pressure (M33 Only)

High or Low Secondary Fluid Pump Pressure (M33 Only)

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High or Low Secondary Fluid Pump Pressure (M33 Only)

Checks Causes
Inspect transmission fluid level. Refer to Transmission Fluid Checking Procedure . Incorrect fluid level.
  • Restricted Secondary Fluid Pump filter.
  • Pump motor overheating.
  • Worn or leaking pump.
  • Valve body check valve stuck or sticking.
  • Secondary Fluid Pump relief valve stuck open.
  • Oil circuit restriction.
 Incorrect pump volume.
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