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Learn to diagnose and repair a complex Duramax dual tank fuel system failure in this detailed automotive repair tutorial. Follow along as a professional mechanic troubleshoots a GMC 3500 dually flatbed with a Duramax diesel experiencing fuel transfer issues between the rear and front tanks, combined with a diesel fuel leak from the rear transfer pump. Discover how to determine whether multiple symptoms stem from a single component failure or represent separate problems requiring individual solutions. Gain insight into the operation of classic Duramax dual tank setups, understand common failure points in these systems, and master the diagnostic approach needed to avoid confusion when encountering similar issues. Explore the systematic troubleshooting process, learn to identify the root cause of fuel transfer pump failures, and understand why these particular components fail in dual tank configurations.
