OEM Chevrolet Avalanche 2500 Fuel Level Sensor

Chevrolet Avalanche 2500 Fuel Level Sensor Parts and Q&A

• Fuel Gauge Sending Unit
  19133597
  Q: How to Replace the Fuel Level Sensor in the Rear Tank on Chevrolet Avalanche 2500?

  A:

  It is necessary to begin Fuel Level Sensor replacement in the rear tank by removing the tank then disconnecting the evaporative emission (EVAP) lines from the Fuel Tank module. Using the Fuel Level Sensor lock ring wrench (J 45722) together with a long breaker-bar will help unlock the Fuel Level Sensor lock ring without damaging it because of the j 45722 alone. Manipulate the Fuel Level Sensor away from fuel pipes to avoid injuring the joints and discard impact tools since releasing the lock ring needs significant force while hammer and screwdriver methods should be avoided. You must first secure the Fuel Tank from rotation before taking out the j 45722 tool and its lock ring. You should elevate the Fuel Tank module carefully to expose quick connect fittings under the cover. Then remove the module by disconnecting vapor line quick connect connectors from below. Set the old Fuel Tank module seal aside while placing the lock ring onto a flat surface for measuring its clearance with seven points using a feeler gauge. Relying on the "do not reuse" stamp on the lock ring can be valid for reuse when it is neither damaged nor warped but visual inspection determines the absence of both characteristics. The lock ring needs replacement when warpage extends beyond 0.41 mm (0.016 in). To install the Fuel Tank module you should first position its new seal onto the Fuel Tank then partially insert the module while quickly connecting the vapor line fittings before completing the installation. You should position the lock ring and then use the Fuel Level Sensor lock ring wrench (J 45722) tool to rotate it clockwise until locking position while ensuring correct side exposure points up and restriction to clockwise rotation only. Through the final step of processing, install the Fuel Tank while joining its evap lines to the Fuel Tank module.
• Fuel Gauge Sending Unit
  88965441
  Q: How to Replace the Fuel Level Sensor in the Front Tank on Chevrolet Avalanche 2500?

  A:

  The replacement procedure for the front tank Fuel Level Sensor begins with obtaining the required tool which is the fuel sender lock ring wrench (J 45722). The first step requires removing the front Fuel Tank while you disconnect the lines which connect the fuel and evap system to the Fuel Tank module. The j 45722 tool with a long breaker-bar allows users to remove fuel sender lock ring safely while protecting it from damage only through the designated instrument. The process of handling the Fuel Level Sensor should avoid contact with fuel pipes because it threatens joint integrity and you must never use impact tools because releasing the lock ring demands considerable force. Orientation of the Fuel Tank must be prevented throughout this maintenance procedure. Use the provided j 45722 to unlock the Fuel Tank module lock ring before lifting the module for quick connect fitting access to disconnect the vapor line below the module cover for removal. The old Fuel Tank module seal must be discarded while checking the flatness of the lock ring using a feeler gauge at seven points. A lock ring must be replaced if its warpage exceeds 0.41 mm (0.016 in); otherwise, it can stay in service if not damaged. To install the new Fuel Tank module seal you should position the Fuel Tank module partially into the Fuel Tank before reconnection of the vapor line quick connect fitting and completing the module installation. Position the lock ring and lock its place using the j 45722 while rotating clockwise. Align the ring with the proper side facing upward direction. Always use a new fuel sender seal together with avoidance of lubricating substances in the sealing groove. The concluding step includes connecting both fuel and evap lines to the Fuel Tank module before reattaching the front Fuel Tank.