1989 GMC Safari Parking brake light blinking a code. What

  • 1 POST
  • 1989 GMC SAFARI

Brakes problem
1989 GMC Safari 6 cyl Two Wheel Drive Automatic 138000 miles

The parking brake set light is blinking even when there is no jumper on the ADLC (or whatever that acronym is). Three short/one long. At first the light would just stay on so I checked the switch--it was good. After a few days this series of flashes started and won't go away. I replaced the vacuum lines a few months ago when they cracked and caused really bad idling problems. Those are still good. All the research I've done points to the ABS system (Kelsey-Hayes RWAL & RABS Rear Wheel Non-Integral) as one possible problem, or the ECU. I can't find the specific code to help me on this. My one manual does not have them.

Thanks for any ideas you can give me.


Do you
have the same problem?
Tuesday, June 8th, 2010 AT 10:18 AM

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