Rear brakes do not work, brake pedal has no pressure

20

Asked by Mark Dec 27, 2022 at 03:37 PM about the 2008 Chevrolet Trailblazer 1LT 4WD

Question type: Maintenance & Repair

Lost pedal pressure while driving , changed master cylinder , bled all 4 , still no
pedal pressure rear brakes do not operate at all. Put on hoist spin rears step on
brakes continue to spin.

3 Answers
310,265

Gene answered about a year ago

Sounds like the antilock unit is full of air or it just went bad, did you bleed the antilock unit with the key on? It has a bleeder on the side. I have ran across a few is these that need a scanner to activate the system to allow bleeding.

1 people found this helpful.
Best Answer Mark helpful
40,015

beatupchevy answered about a year ago

Did you bleed the master cylinder properly ? Are any of the lines wet from brake fluid ?

Mark helpful
190

FJ4072327 answered about a year ago

GMT360 platform has a ABS module that must be bled using a scanner. Or you'll never get all the air out.

Mark helpful

Your Answer:

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