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Home >> Chevrolet >> 2007 >> Uplander Base, 3.9 1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls & Fuel - 3.9L - DTC P0010 To P0420 >> DTC P0112 or P0113 >> Circuit/System Verification

Circuit/System Verification

If the ignition has been OFF for 8 hours or more, the IAT and the ECT, should be within 15°C (27°F) of each other and also the ambient temperature. Turn ON the ignition, with the engine OFF, and use a scan tool to observe the IAT and ECT parameters.

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