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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 936 (Antilock Brake System And Traction Control System) >> Diagnostic Information and Procedures >> DTC C0265 or C0266: EBCM Relay Circuit >> Diagnostic Aids >> Notes

Diagnostic Aids: Notes

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IMPORTANT: Whenever the EBCM is replaced for DTC C0265 or C0266, the ABS pump motor and motor circuitry must be tested for the proper resistance. Refer to steps 7 and 8 in the diagnostic table below for testing procedures and resistance values.

Check ground G110 for an open or a high resistance.

Check the EBCM power supply for an intermittent open.