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Having problems bleeding the system?

Tiny
LASURVIVOR47
  • MEMBER
  • 2003 GMC SONOMA
  • 140,000 MILES
I have a 2003 gmc sonoma. I have replaced all the brakes lines and brake hardware. Having problems bleeding the system. I filled the master cylnder with fluid and I can't get it to bleed. Any ideas?
Saturday, February 23rd, 2013 AT 8:15 PM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
You may have gotten air in master cylinder, try using a pressure bleeder and you may need to use 2-3 qts to bleed it properly now if your brake pedal isn't very good after bleeding the brake module modulator valve may have air in it and will need to be bled along with using a scanner to activate it. so it can be bled. Please check out this guide to help you

https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

Please go over this guide and report back.
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Saturday, February 23rd, 2013 AT 8:24 PM
Tiny
LASURVIVOR47
  • MEMBER
  • 45 POSTS
Thanks for getting back to me. Yes it just dawned on me the master cylnder was empty. I will try that. Thanks again.
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Sunday, February 24th, 2013 AT 10:34 PM

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