GM Service Manual Online
For 1990-2009 cars only

DTC Parameters


Object Number: 866356  Size: MF

DTC C0550 will set if:

    • An internal malfunction exists.
    • When this trouble code sets, the ABS Control Module will disable ABS, traction control and dynamic rear proportioning and turn On the antilock and RED brake telltale

Diagnostic Aids

The ABS control module must be replaced.