Buick Rainier fuel gauge permanently reading empty, sensor issue unresolved on Buick Rainier

Some Buick Rainier owners report experiencing issues with their fuel gauge consistently reading empty, which is often indicative of a faulty fuel level sensor in the fuel tank. This problem can lead to erratic fuel gauge operation and is common among these vehicles, with verification possible through scanning the Body Control Module (BCM) for fault codes. Additionally, high mileage vehicle owners may need to replace the complete fuel pump module assembly if this condition arises. General Motors has also established a special service policy for certain 2005-2007 models, agreeing to cover 50% of the repair costs associated with the fuel level sensor issue. In some instances, a defective engine control module (ECM) may contribute to inaccurate fuel gauge readings at both the high and low ends of the fuel range. Prompt attention to this issue is crucial to ensure accurate monitoring of fuel levels, and further diagnostics may be necessary if the gauge continues to malfunction.