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Circuit/System Testing

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the VES actuator.
  2. Measure for 0 volts between the actuator control circuit terminal B and ground.
    • If over the specified range, test the actuator control circuit terminal B for short to voltage. If the circuit tests normal, replace the EBCM.
  3. Ignition ON, measure for 12 volts between the actuator control circuit and ground.
    • If under the specified range, test the actuator control circuit for short to ground or open/high resistance. If the circuit tests normal, replace the VES actuator.
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