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P1512 Diagnostic Trouble Code Discussion for February 2012

ISC Solenoid Valve 2 Circuit Low Input

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Trouble Ticket Help Requests for DTC P1512
Help Request Posted
2003 Chevrolet Trailblazer North Face 4.2L Poor Idle Quality, MIL Lamp on, Will not shift VIN: 1GNDT13S63
P1512: Control Module Throttle Actuator Position Performance. ... 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