Question about 1999 Chevrolet Blazer

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My problem is similar, in that it started after hitting a bump

The light would be off the next time I started. Then it would be light off, but on a slow right turn the abs pulsation would start. Now it pulsates sometimes without the light on when braking slowly going straight I took it to a repair shop and was told the following: Suspect control module intermittent failure Unable to scan vehicle for faults OBD2 not working.
They said it was very expensive to fix and just drive it and ignore the light I an concerned that this is poor information to follow. Any help would be great Thank You

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HAVE THE ABS SYSTEM CHECKED FOR CODES FIRST. I SUSPECT YOU HAVE A HUB WHEEL SPEED SENSOR BAD. AT FIRST THEY WILL HAVE AN ERRATIC SIGNAL THEN THEY SOMETIMES QUIT ALL TOGETHER. THE SYSTEM THINKS A WHEEL IS SKIDDING THAT IS WHY THE ABS ACTIVATES.

IF YOU HAVE A HUB WHINING THAT IS A POSSIBLE PLACE TO START.

Posted on Jul 13, 2009

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