BLK-DVL

Installed my new brakes yesterday and need to bleed the lines. Is it RR,RL,FR,FL? Help is much appreciated since I need this car up and going again

C8-Vette

You got it.

BLK-DVL

Thanks!

Also one more stupid question, does anyone have the actual bleeding procedure from the service manual for a c6. I was able to find one for a 01' C5 vette, but not sure if it still applies to the C6, i would assume it would be the same.

RichieRichZ06

Document ID# 741837
2005 Chevrolet Corvette


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Hydraulic Brake System Bleeding (Manual)
Caution: Refer to Brake Fluid Irritant Caution in Cautions and Notices.

Notice: When adding fluid to the brake master cylinder reservoir, use only Delco Supreme 11®, GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container. The use of any type of fluid other than the recommended type of brake fluid, may cause contamination which could result in damage to the internal rubber seals and/or rubber linings of hydraulic brake system components.

Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in Cautions and Notices.

Place a clean shop cloth beneath the brake master cylinder to prevent brake fluid spills.
With the ignition OFF and the brakes cool, apply the brakes 3-5 times, or until the brake pedal effort increases significantly, in order to deplete the brake booster power reserve.
If you have performed a brake master cylinder bench bleeding on this vehicle, or if you disconnected the brake pipes from the master cylinder, you must perform the following steps:
3.1. Ensure that the brake master cylinder reservoir is full to the maximum-fill level. If necessary, add Delco Supreme 11®, GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.

If removal of the reservoir cap and diaphragm is necessary, clean the outside of the reservoir on and around the cap prior to removal.

3.2. With the rear brake pipe installed securely to the master cylinder, loosen and separate the front brake pipe from the front port of the brake master cylinder.

3.3. Allow a small amount of brake fluid to gravity bleed from the open port of the master cylinder.

3.4. Reconnect the brake pipe to the master cylinder port and tighten securely.

3.5. Have an assistant slowly depress the brake pedal fully and maintain steady pressure on the pedal.

3.6. Loosen the same brake pipe to purge air from the open port of the master cylinder.

3.7. Tighten the brake pipe, then have the assistant slowly release the brake pedal.

3.8. Wait 15 seconds, then repeat steps 3.3-3.7 until all air is purged from the same port of the master cylinder.

3.9. With the front brake pipe installed securely to the master cylinder, after all air has been purged from the front port of the master cylinder, loosen and separate the rear brake pipe from the master cylinder, then repeat steps 3.3-3.8.

3.10. After completing the final master cylinder port bleeding procedure, ensure that both of the brake pipe-to-master cylinder fittings are properly tightened.

Fill the brake master cylinder reservoir with Delco Supreme 11®, GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container. Ensure that the brake master cylinder reservoir remains at least half-full during this bleeding procedure. Add fluid as needed to maintain the proper level.
Clean the outside of the reservoir on and around the reservoir cap prior to removing the cap and diaphragm.

Install a proper box-end wrench onto the RIGHT REAR wheel hydraulic circuit bleeder valve.
Install a transparent hose over the end of the bleeder valve.
Submerge the open end of the transparent hose into a transparent container partially filled with Delco Supreme 11®, GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.
Have an assistant slowly depress the brake pedal fully and maintain steady pressure on the pedal.
Loosen the bleeder valve to purge air from the wheel hydraulic circuit.
Tighten the bleeder valve, then have the assistant slowly release the brake pedal.
Wait 15 seconds, then repeat steps 8-10 until all air is purged from the same wheel hydraulic circuit.
With the right rear wheel hydraulic circuit bleeder valve tightened securely, after all air has been purged from the right rear hydraulic circuit, install a proper box-end wrench onto the LEFT FRONT wheel hydraulic circuit bleeder valve.
Install a transparent hose over the end of the bleeder valve, then repeat steps 7-11.
With the left front wheel hydraulic circuit bleeder valve tightened securely, after all air has been purged from the left front hydraulic circuit, install a proper box-end wrench onto the LEFT REAR wheel hydraulic circuit bleeder valve.
Install a transparent hose over the end of the bleeder valve, then repeat steps 7-11.
With the left rear wheel hydraulic circuit bleeder valve tightened securely, after all air has been purged from the left rear hydraulic circuit, install a proper box-end wrench onto the RIGHT FRONT wheel hydraulic circuit bleeder valve.
Install a transparent hose over the end of the bleeder valve, then repeat steps 7-11.
After completing the final wheel hydraulic circuit bleeding procedure, ensure that each of the 4 wheel hydraulic circuit bleeder valves are properly tightened.
Fill the brake master cylinder reservoir to the maximum-fill level with Delco Supreme 11®, GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.
Slowly depress and release the brake pedal. Observe the feel of the brake pedal.
Important: If it is determined that air was induced into the system upstream of the ABS modulator prior to servicing, the Antilock Brake System Automated Bleed Procedure must be performed.

If the brake pedal feels spongy, repeat the bleeding procedure again. If the brake pedal still feels spongy after repeating the bleeding procedure, perform the following steps:
21.1. Inspect the brake system for external leaks. Refer to Brake System External Leak Inspection .

21.2. Pressure bleed the hydraulic brake system in order to purge any air that may still be trapped in the system.

Turn the ignition key ON, with the engine OFF. Check to see if the brake system warning lamp remains illuminated.
Important: DO NOT allow the vehicle to be driven until it is diagnosed and repaired.

If the brake system warning lamp remains illuminated, refer to Symptoms - Hydraulic Brakes .

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Document ID# 741837
2005 Chevrolet Corvette

BLK-DVL

Thank you very very much.

drmbuck

see the next post!!

StKnoWhere

Think this reads RR, LF, LR, RF?

tennblkc6

yeah...it does and it contrary to the way I've always bled brakes for over 35 years which was rr, lr, rf, lf.

Bill Dearborn

For the Vette that changed in 2001 when they went from front/rear dual brake circuits to dual diagonal brake circuits. Now the right rear and left front brakes are on the same circuit while the left rear and right front brakes are on the other.

Bill

tennblkc6

thanks bill. I learn something new every day.

Peter_Reinhard

This is great information. I was just going to change my brake fluid as a matter of general principal; 08 z51 with 50K miles. Also many tracks require changing. So its time to do it.

Q1. Why does the order matter when bleeding the lines at the wheels? I'll follow the order but don't know why it would make a difference. Maybe the order isn't important if just changing the brake fluid?

I plan to remove most of the fluid with a turkey baster and refill with new stuff, then bleed all 4 while adding new fluid and that should do it. Right?

Given that the master cylinder and/or its hoses are not touched, I plan to skip that purging.

Thanks for the detailed procedure.

5knives

Oops. I changed mine about 5 years ago using the old, furthest from the master cylinder inwards method. I had no idea of the change.

Does anyone know if this is somewhat of a universal switch, or specific just to GM? Or only the Corvette?

Seadawg

With either sequence, you still are flushing the farthest one from the master cylinder....

5knives

Yes, and I was taught to continue the process in that order. Meaning start with the furthest corner from the master cylinder, which in this case the methods begin the same, and then continue to the next furthest corner and so on.

WhiteDiamond

You will still be fine. You have the greater of each circuit flushed first anyway and then are attending to that last bit of line when you move to the fronts. Probably better to go GMs recommend, as the old fluid has less time to diffuse from the un-bled front lines to the nice, new fluid in the lines that head to the rears.