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Chevrolet
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2009
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Traverse LS, AWD
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System & Fuel System - 3.6L - DTC P0638 To DTC P2635
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DTC P1551
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Conditions for Setting the DTC
Conditions for Setting the DTC
The ECM detects the TP sensor angle is less than 10 percent or greater than 40 percent when the throttle actuator control motor is deactivated.
The condition exists, then a 5 second delay for MIL ON.