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Home >> Hummer >> 2008 >> H3 Luxury, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 23 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Diagnostic Information And Procedures >> Inaccurate Shift Points

Inaccurate Shift Points

WARNING: This page is about a different car, the 2008 Isuzu i-370, 2008 Isuzu i-290, 2008 GMC Canyon, and 2008 Chevrolet Colorado. 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) or Input Speed Sensor (250)
  • Disconnected
  • Damaged
  • Bolt not tightened
4WD Low Switch
  • Disconnected
  • Damaged