GM Service Manual Online
For 1990-2009 cars only

Component

Inspect

System Voltage

    â€¢ 12 volts not supplied to transmission
    â€¢ Electrical short (pinched solenoid wire)
    â€¢ Solenoid not grounded

3-2 Control Solenoid

    â€¢ Shorted or damaged
    â€¢ Contamination
    â€¢ Damaged Seal