Owners of 2004-2009 Cadillac SRX, 2005-2011 STS, 2006-2009 XLR-V DTS, 2006-2014 Escalade 2009-2014 Escalade ESV and 2009-2014 CTS-V equipped with GM’s Magnaride suspension may comment on a Service Suspension System message displayed on the driver information center.
During the assembly process, it is possible that the 90-degree electrical connector at the top end of a shock absorber (actuator) may not have been fully seated or has been bumped enough to partially disconnect, creating an internal contact concern. DTCs stored may include C0575, C0580, C0585 or C0590.
CTS models built after February 22, 2011, have a CPA (connector with position assurance) tab as part of the connector. This design should be less susceptible to being unseated. All other Cadillac models have the original style connector.
If the DTC refers to a front shock absorber (actuator), remove the front shock tower beauty cover (if so equipped). Disconnect the electrical connector from the top of the shock actuator.
Visually examine the green insulator and center post of the connector to verify that it is straight and in good condition. Replace the connector and re-test.
Reconnect the connector to the shock and clear the suspension DTC(s) and confirm that the code(s) do not reset.
If the code(s) return, remove the electrical connector and pigtail. Swap the connector with the connector on the opposite side shock actuator. If the DTC follows the connector to the other side, replace the connector.
New connector kits are available as P/N 13586171.
Disconnect the actuator connector from the shock. Examine the green insulator (1) and the center post (2).
Close-up of the green insulator.
