Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - p1860 tcc pwm solenoid electrical fault
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Old 06-09-2012, 02:18 PM
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only 2 symptoms occur intermittant hard starting and fuel gauge acting wierd the switch controlls current to the ecm. most gm vehicals that come to my shop with a 1860 code it is in the ignition switch not the lock were the key goes the switch is on th e bottom of the column but check basics fuse and trace the wiring
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