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P1221 Diagnostic Trouble Code Discussion for July 2015

TP Sensor 2 Signal Correlation


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Trouble Ticket Help Requests for DTC P1221
Help Request Posted
2001 GMC Yukon XL 1500 Denali 6.0L Hesitation, reduced power VIN: 1GKFK66UX1
P1221: TP Sensor 2 Signal Correlation. ... front for the help. This is my personal Yukon Denali XL 2001 with a 6.0 liter AWD. I own a shop and spend all my days working on vehicles. Usually I can diagnose any issue that confronts me but this is one of this I cannot figure out. The vehicle continues...
July 23, 2015