2003 Yukon xl Tahoe Suburban - Service Brake Booster

2003 GMC YUKON
5.3L • V8 • 4WD • AUTOMATIC
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JIMK88
  • MEMBER
  • 1 POST
The " Service Brake Booster " light has come on the dash. I can hear the booster cycle through when I start the truck, then the light turns on. I hate to replace the booster if I can hear it running and working. the master cylinder and brakes work fine, a little more spongy without the help of the booster. is there a fix for this? possibly a o-ring I need to check? Do the boosters go bad? Please include pictures and descriptions if possible. Thank you in advance for any help on solving this issue.
Aug 25, 2014 at 9:50 PM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
have a pro scan this for an abs problem that is why your brakes are spongy there is something wron g with abs unit. your brakes will work but no abs and traction control if you have that.
Aug 26, 2014 at 6:07 AM
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