Sierra 1500 2WD V6-4.3L (2008)
damaged or warped.
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Inspect the lock ring for damage due to improper removal or installation procedures. If damage is found, install a NEW lock ring.
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Check the lock ring for flatness.
Place the lock ring on a flat surface. Measure the clearance between the lock ring and the flat surface using a feeler gage at 7 points.
13. If warpage is less than 0.41 mm (0.016 in), the lock ring does not require replacement.
14. If warpage is greater than 0.41 mm (0.016 in), the lock ring must be replaced.
Installation Procedure
1. Install a NEW fuel tank module O-ring seal onto the fuel tank.
Important: The bucket must be tipped slightly during installation to avoid bending the fuel level sensor float arm.
2. Tilt the module toward the rear of the fuel tank to allow the fuel level sensor float arm to clear the tank opening. Install the module into the fuel
tank.
3. Lower the module assembly into the tank.
4. Position and install the fuel tank module lock ring.
5. Install the J 45722 to the fuel tank module lock ring.
