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P1626 Diagnostic Trouble Code Discussion for December 2013

Theft Deterrent System Fuel Enable Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1626
Help Request Posted
2003 Chevrolet Express 3500 6.0L No Start, Stall, MIL Lamp on VIN: 1GCHG39U13
P1626: theft deterrent start enable signal lost. ... for 10 minutes after tune up. Had it towed in and started right up. P1626 code but no "U" codes. Also had lean bank 1 and 2 and misfire codes. Replaced intake gask's, cleared codes. came back next day and won't start. 5 volts at ign swich on scan t...
December 26, 2013