GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Chevy C Pickup - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E 🢒 Inaccurate Shift Points

Inaccurate Shift Points

Checks

Causes

Oil Pump Assembly
    • Stuck pressure regulator valve
    • Sticking pump slide

Valve Body Assembly

Spacer plate or gaskets misassembled, damaged or incorrect

Case
    • 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
    • Disconnected
    • Damaged
    • Bolt not tightened

4WD Low Switch
    • Disconnected
    • Damaged