GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1245803  Size: SH
  1. Measure the resistance of each pressure control solenoid (PCS) between terminals.

  2. Object Number: 1245804  Size: SH
  3. If the resistance value is not between the minimum and maximum resistance plot lines, then measure the solenoid resistance at 20°C (68°F).
  4. Important: The resistance of the solenoid can become infinity ohm when the resistance measurement is made at high temperatures.

  5. If both resistance measurements are not between the minimum and maximum resistance plot lines, replace the PCS.