Fault Codes/General Motors Powertrain/IAT VOLTAGE HIGHGeneral Motors PowertrainIAT VOLTAGE HIGHUnclassifiedElectricalWhat This Code MeansIAT VOLTAGE HIGHSuggested Actions1Log codes for reference2Select historic or active DTCs using arrow keys or mouse and press Enter to erase them from memoryRelated General Motors Powertrain Fault CodesMAP VOLTAGE LOWECT VOLTAGE HIGH611P0300P0336DTC 532DTC 434DTC 433DTC 425DTC 424Browse all General Motors Powertrain fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for IAT VOLTAGE HIGH on your specific General Motors Powertrain unit — cited to the OEM manual, not a forum guess.Your question about IAT VOLTAGE HIGHGET THE ANSWERFree account required — we'll bring your question with you.