ABS module Help

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tunedbytuna

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I have a 1998 GMC, ABS light on steady. Hooked up diagnostic scanner, and says communication error. Tested scanner another vehicle to verify it was working. I suspect the brain to he ABS is no good. Any suggestions before I go swapping it out?


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east302

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Here are the ABS diagnostics for a 1998. It looks like it covers communication errors, maybe it will help.

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Connector C1:

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Connector C2:

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Connector C3:

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Ground G105:

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