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P0621 Diagnostic Trouble Code Discussion for May 2015

Generator L-Terminal Circuit Malfunction


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Trouble Ticket Help Requests for DTC P0621
Help Request Posted
2004 Chevrolet Trailblazer LS 4.2L No Start VIN: 1GNES16S24
P0621: Generator L-Terminal Circuit Malfunction. Hello and thanks for viewing this help request. This vehicle is a no start. Customer removed engine from truck and sent it to machine shop for rebuild. He reinstalled rebuilt engine and he states it started up and ran fine for about 30 minutes and then the eng...
May 18, 2015