OEM 2008 Cadillac CTS Fuel Tank

2008 Cadillac CTS Fuel Tank Parts and Q&A

• Q: How to replace the secondary fuel tank module on 2008 Cadillac CTS?

  A: Access to the replacement of the secondary fuel tank module starts by removing the fuel tank. Use gloves to handle the secondary fuel tank module electrical connector while disconnecting it followed by proper placement of the connector to protect the lock ring from damage. A combination of the J 45722 and a long breaker-bar enables counterclockwise rotation of the fuel tank module lock ring for removal. The following step is detachment of the cam lock ring. To start the replacement, disconnect the fuel transfer hose quick connect fitting from the partially removed secondary fuel tank module before taking out the module completely from the fuel tank along with discarding the fuel tank module seal. You should check the lock ring for damage; replacement of the lock ring becomes necessary if it experiences warp exceeding 0.41 mm (0.016 in). Grasp the fuel transfer hose within the tank while partially installing the secondary fuel tank module before connecting it. Succeed in attaching the fuel transfer hose quick connect fitting to the module by pressing the module downward while it aligns with the encapsulated ring and then confirm the lock ring's correct orientation allows only clockwise rotation. Install the cam lock ring using the J 45722 and extend the breaker-bar to turn the ring clockwise until it reaches complete sealing position. Reinstall the fuel tank after you reengage the connector interlock on the secondary fuel tank module and connect its electrical connector.