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P1626 Diagnostic Trouble Code Discussion for August 2012

Theft Deterrent System Fuel Enable Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1626
Help Request Posted
2005 Chevrolet Silverado 2500 HD 6.6L No Start, Stall VIN: 1GCHK23225
P1626: Theft Deterrent Fuel Enable Signal Lost. I have followed the flow chart for code p1626 and it called for replacing bcm, replaced and still has same symptom... crank-start for half-second then stall just like a vtd fuel disable... checked all powers and grounds at bcm and pcm. scoped class 2 data line...
August 24, 2012
2000 Pontiac Bonneville SE 3.8L No Start, MIL Lamp on VIN: 1G2HX54K8Y
P1626: Theft Deterrent System Fuel Enable Circuit Malfunction. ... Intermittenly car cranks and fires up, runs for about 5 seconds really rough and MIL flashes fast while running then sputters and dies. Sets code p1626-Theft Deterrent Fuel Enable Signal Lost...passed/failed on tech2. but then other times it starts and run...
August 29, 2012