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P0638 Diagnostic Trouble Code Discussion for January 2008

Throttle Actuator Control Range/Performance

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Trouble Ticket Help Requests for DTC P0638
Help Request Posted
2003 Saturn Vue 3.0L Hesitation, MIL Lamp on, Power loss VIN: 5GZCZ63B83
P0638: Throttle command performance. Vehicle came in for wheel bearing work, brakes and power loss with MIL on. Checked for codes and found the three listed, did some preliminary research with minimal results. Cleaned the throttle bore, checked the spring tension on the drive-by-wire throttle pos...
January 30, 2008