OEM 2008 Cadillac STS Fuel Tank

2008 Cadillac STS Fuel Tank Parts Questions & Experts Answers

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

  A: Access to the secondary fuel tank module becomes possible through fuel tank removal before starting replacement work. Prior to positioning the electrical connector for the secondary fuel tank module on the aside you need to carefully avoid damaging the lock ring. A technician must use J 45747 with a long breaker-bar to turn counterclockwise on the fuel tank module lock ring to unlock it before removing the cam lock ring. To access the fuel hose quick connector a user must disconnect it from the secondary fuel tank module before completely removing the module from the fuel tank system. All spent fuel tank module seals must be discarded. Check the lock ring carefully because a warping larger than 0.41 mm (0.016 in) requires a new replacement. After installing the new fuel tank module seal you should grasp the hose inside the tank before installing the partial secondary fuel tank module. Align the fuel transfer hose quick connect fitting with the module while pressing the module downward and check that the lock ring faces correctly to turn only in a clockwise direction. To install the cam lock ring use tools J 45747 together with a long breaker-bar by turning in a clockwise direction until the ring reaches full seat position. The last step involves reconnecting the electrical connector to the secondary fuel tank module while enabling the connector interlock and then reinstalling the fuel tank.