Removal Procedure
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the fuel tank. Refer to Fuel Tank Replacement (Pickup) or Fuel Tank Replacement (Cab/Chassis - Front) or Fuel Tank Replacement (Cab/Chassis - Rear) .
- Disconnect the fuel lines from the sending unit. Refer to Metal Collar Quick Connect Fitting Service or Plastic Collar Quick Connect Fitting Service .
- Use the J 45722 and a long breaker-bar in order to unlock the fuel sender lock ring.
- Remove the sending unit and seal. Discard the seal.
- Clean the sending unit sealing surfaces.
- Place the lock ring on a flat surface. Measure the clearance between the lock ring and the flat surface using a feeler gauge at 7 points.
- If warpage is less than 0.41 mm (0.016 in), the lock ring does not require replacement.
- If warpage is greater than 0.41 mm (0.016 in), the lock ring must be replaced.
CAUTION:
Avoid damaging the lock ring. Use only J-45722 to prevent damage to the lock ring.
CAUTION:
Do Not handle the fuel sender assembly by the fuel pipes. The amount of leverage generated by handling the fuel pipes could damage the joints.
NOTE:
Do NOT use impact tools. Significant force will be required to release the lock ring. The use of a hammer and screwdriver is not recommended. Secure the fuel tank in order to prevent fuel tank rotation.
NOTE:
Some lock rings were manufactured with "DO NOT REUSE" stamped into them. These lock rings may be reused if they are not damaged or warped.
NOTE:
Inspect the lock ring for damage due to improper removal or installation procedures. If damage is found, install a NEW lock ring.
NOTE:
Check the lock ring for flatness.