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P1629 Diagnostic Trouble Code Discussion for April 2005

Theft Deterrent Signal Not Received

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Trouble Ticket Help Requests for DTC P1629
Help Request Posted
1998 Pontiac Grand Prix GTP 3.8L Misfire, MIL Lamp on VIN: 1G2WP5218W
P1629: Theft Deterrent Signal Not Present, Engine Cranking. ... advance. I need some help before I get involved in this car. The car belongs to my week old wifes sister. Code P1629 is not one that I am to familar with; I think that it has something to do with the ingition switch. Code P1646 comes on right after you cle...
April 27, 2005