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Brake fuse blow when pressing the brake pedal

Tiny
HANDYDOUG13
  • MEMBER
  • 1997 CHEVROLET ASTRO
  • 4.3L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 213,000 MILES
I have a ohmmeter on the stop hazard fuse and checking for continuity. There is a short when pushing the brake pedal only when the ignition is on. The turn signals don't work either.
Sunday, November 1st, 2020 AT 11:00 AM

9 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

I attached a wiring diagram for you to view. The first thing I would do is disconnect the turn signal switch connectors under the dash and see if the fuse still fails.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Keep me updated with the results.

Roy
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Sunday, November 1st, 2020 AT 1:06 PM
Tiny
HANDYDOUG13
  • MEMBER
  • 5 POSTS
Hello Roy, thank you for that information. I haven't been able to check that out yet. I did find that the left front outer turn signal bulb is burned out. Could that be possible cause? Thanks,
Doug
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Sunday, November 1st, 2020 AT 1:18 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Possible but I doubt it.

Remove the bulb and then re test and see if the fuse still fails.

Roy
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Sunday, November 1st, 2020 AT 1:28 PM
Tiny
HANDYDOUG13
  • MEMBER
  • 5 POSTS
I have to go get some fuses. The turn signals work now though. I'll let you know what the results are.
Thank you so much!
Doug
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Sunday, November 1st, 2020 AT 1:42 PM
Tiny
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You are welcome.

Always glad to help.

Roy
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Sunday, November 1st, 2020 AT 1:59 PM
Tiny
HANDYDOUG13
  • MEMBER
  • 5 POSTS
Thanks for your help. So far, the brake lights fuse has not blown after putting the new left front outer turn signal bulb in.
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Sunday, November 1st, 2020 AT 4:51 PM
Tiny
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Good. I would replace the bulb and socket if it is damaged

Roy
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Sunday, November 1st, 2020 AT 5:44 PM
Tiny
HANDYDOUG13
  • MEMBER
  • 5 POSTS
Thanks, I will check it. Thank you for your help!
Doug
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Sunday, November 1st, 2020 AT 5:48 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Stay safe.

You are welcome.

Always glad to help.

Roy
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Monday, November 2nd, 2020 AT 3:08 AM

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