1989 GMC Safari Brakes

By aloha498
July 24, 2006 in Ask A GM Technician

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aloha498

Posted July 24, 2006

Brake warning light continuously flashes 6 short then one long.

What does that mean and how do I fix?

Thanks

That's a code 7, Isolation Valve Short Circuited or ECU Faulty. So you replace one of those and hope you guess the right one. You might want to use Google to see if you can find some diagnostic steps online. I don't have that info handy.

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