× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P1523 Diagnostic Trouble Code Discussion for March 2011

ETC System Malfunction - Throttle Valve Stuck

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P1523
Help Request Posted
2002 GMC Envoy SLT 4.2L MIL Lamp on, Reduced Power Light VIN: 1GKDT13S52
P1523: TAC Module Return Performance. I have replaced the APP connector and The Throttle Body connector. I have also load tested the wiring from the APP to the PCM and the Throttle Body to the PCM, the all carry a load using a headlight bulb and the voltage drop was .02V. I am leaning toward the P...
March 25, 2011