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B2647 Diagnostic Trouble Code Discussion for October 2014

Ambient Light Sensor Circuit Low

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Trouble Ticket Help Requests for DTC B2647
Help Request Posted
1999 GMC Sierra 1500 SL 5.3L MIL Lamp on VIN: 2GTEK19T5X
B2647: Ambient Light Sensor Circuit Low. ... a big service, including changing transmission fluid and filter. The customer says when the service four-wheel drive light comes on the vehicle will not shift properly. When I hooked up my Modis I got the code B2647 ambi...
October 24, 2014