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P0380 Diagnostic Trouble Code Discussion for May 2010

Glow Plug Feedback Circuit

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Trouble Ticket Help Requests for DTC P0380
Help Request Posted
2001 Chevrolet Silverado 2500 HD LS 6.6L MIL Lamp on VIN: 1GCHK23171
P0380: Glow Plug Feedback Circuit Malfunction. Check engine light is on, and has a po380 code. Was that way all thru the winter and never had a starting problem. Check voltage at the large red wire at controller, good. Checked voltage at other two large terminals one powers up with key on, and also powers ...
May 11, 2010