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P1626 Diagnostic Trouble Code Discussion for January 2008

Theft Deterrent System Fuel Enable Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1626
Help Request Posted
2006 Hummer H2 6.0L Hesitation, Surge, Poor Fuel Economy VIN: 5GRGN23466
P1626: Theft Deterrent Fuel Enable Signal Lost. H2 coming in tomorrow, did field test and got these codes. If anyone has had the same problem would be great for an advantage on this repair, as i'm not a G M tech when driving the car would all of a sudden drop 4 cylinders, well that what it feels and sounds ...
January 30, 2008