Test Description

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The numbers below refer to the step numbers on the diagnostic table.

2. Checks control circuit/control module.
3. Tests for low reference circuit of the suspension damper solenoid. The ESC module supplies ground of the suspension damper solenoid.
4. Verifies that the resistance of the suspension damper solenoid.
5. Tests the control circuit to the suspension damper solenoid for an open and short to voltage.
6. Tests the control circuit for a short to ground.
11. Replace and program the ESC module.

Fig 1: DTC C0575, C0580, C0585, Or C0590 Tests (Steps 1 To 9)
Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC C0575, C0580, C0585, Or C0590 Tests (Steps 10 To 12)
Courtesy of GENERAL MOTORS CORP.