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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1563 (Automatic Transmission, 4L60-E/4L65-E (Troubleshooting)) >> Troubleshooting >> Inaccurate Shift Points

Inaccurate Shift Points

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Inaccurate Shift Points

Checks Causes
Oil Pump Assembly (4)
  • Stuck pressure regulator valve
  • Sticking pump slide
Valve Body Assembly (60) Spacer plate or gaskets misassembled, damaged or incorrect
Case (103)
  • Porous or damaged valve body pad
  • 2-4 Servo Assembly
    • 2-4 accumulator porosity
    • Damaged servo piston seals
    • Apply pin damaged or improper length
  • 2-4 Band Assembly
    • Burned
    • Anchor pin not engaged
Throttle Position Sensor
  • Disconnected
  • Damage
Vehicle Speed Sensor (36)
  • Disconnected
  • Damaged
  • Bolt not tightened
4WD Low Switch
  • Disconnected
  • Damaged