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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 962 (Antilock Brake System And Traction Control System) >> Diagnostic Information and Procedures >> DTC C0265 or C0266: EBCM Relay Circuit >> Diagnostic Aids >> Notes

Diagnostic Aids: Notes

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
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.

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