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P1682 Diagnostic Trouble Code Discussion for February 2012

Ignition 1 Switch Circuit 2 Malfunction

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Trouble Ticket Help Requests for DTC P1682
Help Request Posted
2003 Chevrolet Trailblazer North Face 4.2L Poor Idle Quality, MIL Lamp on, Will not shift VIN: 1GNDT13S63
P1682: Ignition 1 Switch Circuit 2 Malfunction. ... well with the head lamps inop. Found HDM relay defective by swapping cooling fan relay with it. Customer was going to return to have relay replaced the next day. Swapped cooling fan relay back to its original position. We went to pull the vehicle out and f...
February 13, 2012