driver side brake caliper piston not extending out

Asked by GuruSBS48 May 25, 2019 at 04:13 AM about the 2005 GMC Envoy 4 Dr SLT SUV

Question type: Maintenance & Repair

Hi my name is Damien. i have a 2005 GMC Envy. I just changed my front
driver side brake caliper and pads. After i changed everything my brakes
bleed them i noticed when i had test the brakes they were extremely spongy
so i decided  inspect the side i just worked on.and noticed the brake piston
calipers never extended out. So after i bleed them again, i tried to check to
see if i had any pressure when i had pressed my brake pedals and still
spongy. Just need to know what i maybe doing wrong so i can try to fix
it.thanks

1 Answer
11,615

FJ4072 answered 5 years ago

ABS system has to be open in order to bleed these properly. A high end scanner like a Tech II can open. OR, remove the ABS relay, find a gravel road and stomp on the brakes several times, this will open it sometimes, but not always.

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