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Home >> Chevrolet >> 2011 >> Chevy Express G2500, Van Cargo Extended, 6.6 L >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 4.3L - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P2544 >> Circuit/System Testing

Circuit/System Testing

Observe the DTCs in the scan tool

If DTC P0604 is set, replace the ECM.
If DTC P0604 is not set, replace the TCM.

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