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P1637 Diagnostic Trouble Code Discussion for December 2008

Generator 'L' Terminal Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1637
Help Request Posted
2002 Chevrolet Silverado 1500 5.3L No Start, Cuts out, Stall, Misfire, MIL Lamp on VIN: 2GTEC19T32
P1637: Generator 'L' Terminal Circuit Malfunction. Truck was towed in for a no start, had no fire or power to the fuel pump. We scanned and found crank sensor code. While we were testing vehicle it started for no reason. Ran perfect during extended test drive. We replace crank sensor and pigtail. Gave vehicle ...
December 16, 2008