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Eric
Eric, Automotive Repair Shop Manager
Category: Chevy
Satisfied Customers: 32388
Experience:  20+ yrs. experience as repair shop manager and technician.
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Having trouble bleeding the brakes after I changed the front

Customer Question

having trouble bleeding the brakes after I changed the front calipers,
JA: How many miles are on the car? Are these the orignial brakes?
Customer: 200000 miles, original brakes , original calipers
JA: What is the model/year of your Chevy?
Customer: 2004 trailblazer LS
JA: Are you fixing your Trailblazer yourself? What have you tried so far?
Customer: yes, pump the brake pedal and hold, then bleed the caliper
JA: Anything else you want the mechanic to know before I connect you?
Customer: think I am not waiting long enough for the master cylinder to fill
Submitted: 7 months ago.
Category: Chevy
Expert:  Eric replied 7 months ago.

HI,

Ok, the most common issue is installing the new calipers on the wrong sides - they fit either side but are actually side specific for correct bleeder screw replacement.

Look at the calipers you installed. Are the bleeder screws below or above the brake hose to caliper connection?

If they are below, then you have them on the wrong side. When the bleeders are below the connection, there is always an air bubble at top caliper that will never bleed out. Swap sides with the calipers and bleed them and you are good to go.

See attached diagram showing correct location with bleeder above the brake hose to caliper connection

If they are correct, let me know and we will go from there

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Expert:  Eric replied 7 months ago.

I noticed we have not yet resolved your concern you asked about. I would sure appreciate it if you would reply so I can offer my skills and knowledge and repair guide access to help as best I can.
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