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Home >> GMC >> 2000 >> C3500 HD 7.4 J, Standard >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel Pump Balance Module - Dual Tank >> Trouble Shooting >> Preliminary Inspection

Preliminary Inspection

Check fuses, and replace as necessary. Visually inspect for broken or open wires. Check for a broken or partially broken wire inside insulation which could cause system malfunction but prove good in a continuity/voltage check with system disconnected. If problem exists, repair as necessary. If problem does not exist, repair by symptom. See SYMPTOM TESTS  table under SYSTEM TESTS.