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P1819 Diagnostic Trouble Code Discussion for January 2015

Internal Mode Switch - No Start/Wrong Range

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Trouble Ticket Help Requests for DTC P1819
Help Request Posted
2006 Buick Lucerne CX 3.8L No Start, no crank VIN: 1G4HP57206
P1819: Internal Mode Switch - No Start/Wrong Range. Cleared fault codes, the P1629 is the only code remaining. Verify current correct trans selector operation. Have power and groud at theft module. Have no communication with theft module, drivers door module, and passenger door module. Low speed GMLAN shows 16....
January 08, 2015