Trouble Code P1518

By bilbo71
March 13, 2009 in Ask A GM Technician

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bilbo71

Posted March 13, 2009

2003 Silverado 5.3, had a previous post for reduced engine power on DIC. Ran a code check and the scanner reads code P1518 (Manufacturer controlled vehicle speed, idle control, and auxillary inputs). Showing 2 codes but they are both the same one, P1518. This code will not erase, any ideas? Where is the TAC module located?

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