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U0109 Diagnostic Trouble Code Discussion for August 2014

ecm no comm with fuel pump module

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Trouble Ticket Help Requests for DTC U0109
Help Request Posted
2008 Chevrolet Avalanche LS 5.3L No Start VIN: 3GNFK12318
U0109: ecm no comm with fuel pump module. Hello, this Avalanche won't start sometimes. When that happens there is no communication with the FPCM. Later it starts. It never dies, just cranks but no start at times. No amount of wiggling wires seems to have an effect. We can't decide if it "got bette...
August 06, 2014