2008 Tahoe brakes won't bleed

ChuckWoodChuck · Jun 5, 2024

I had some brake issues so I replaced my calipers and rubber lines. I know these require a scan took to bleed the brakes, I've completed the automated bleed sequence 4 times but still have no pedal. The calipers are on the correct locations.

I've went through half a gallon of brake fluid, but it still seems to have air in the system.

Any suggestions? I'm not understanding how it's not getting the air out.

mikez71 · Jun 5, 2024

have you done the manual bleed as well?

ChuckWoodChuck · Jun 5, 2024

By manual bleed do you mean the old way, starting on right rear, pump and hold?

Fless · Jun 5, 2024

Be sure to keep the brake pedal from going all the way to the floor when bleeding. That's past its usual position and can ruin the internal seals in the master cylinder. Put a board underneath the pedal to keep it from going too far down.

mikez71 · Jun 5, 2024

ChuckWoodChuck said:
By manual bleed do you mean the old way, starting on right rear, pump and hold?

Yes!

ChuckWoodChuck · Jun 6, 2024

Will try to manually bleed them tomorrow and will limit pedal travel. Thanks

j91z28d1 · Jun 6, 2024

it seems to almost always be the bleeder isn't at the top of caliper. if it is and you can't get it, try bench bleeding the master. besides a worn master bypassing fluid inside, a huge leak somewhere or a caliper not bleeder up. I'm not sure I've see anything else be a fix for brakes that won't bleed.

15burban · Jun 6, 2024

What were your brake issues that made you replace the calipers and hoses? Did air get in the abs? Is it safe enough to drive to a gravel road or parking lot and slam on the brakes to engage the abs and possibly get any air that's trapped in there out?

ChuckWoodChuck · Jun 6, 2024

15burban said:
What were your brake issues that made you replace the calipers and hoses? Did air get in the abs? Is it safe enough to drive to a gravel road or parking lot and slam on the brakes to engage the abs and possibly get any air that's trapped in there out?

I had a corner that felt like the brake was sticking, and had warped the rotor. I thought it might have been a failure of the rubber line. But to make sure it was a messed up caliper I replaced everything except the master cylinder and the steel lines.

I drove it a short distance after the first bleed and no matter how hard I tried to brake the abs wouldn't engage and I had barely any brakes.

Joseph Garcia · Jun 6, 2024

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving sage advice from the knowledgeable folks on this Forum, and they will continue to work with you until your issue is resolved.

2008 Tahoe brakes won't bleed

ChuckWoodChuck

TYF Newbie

mikez71

Full Access Member

ChuckWoodChuck

TYF Newbie

Fless

mikez71

Full Access Member

ChuckWoodChuck

TYF Newbie

j91z28d1

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15burban

Full Access Member

ChuckWoodChuck

TYF Newbie

Joseph Garcia

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