regorih

Hi,

I'm going to install some stainless steal caliper lines and replace a hard line that was cut that I fixed. Ever since then my pedal has been off and the car does not brake as it should.

Only down side is I need a GM tech 2 scanner.

Here is what I found on the process

Thanks,

Roger

Bleeding the ABS System

Perform a manual or pressure bleeding procedure. If the desired brake pedal height results are not achieved, perform the automated bleed procedure below.

The procedure cycles the system valves and runs the pump in order to purge the air from the secondary circuits normally closed off during normal base brake operation and bleeding. The automated bleed procedure is recommended when air ingestion is suspected in the secondary circuits, or when the BPMV has been replaced.

Automated Bleed Procedure

Notice: The Auto Bleed Procedure may be terminated at any time during the process by pressing the EXIT button. No further Scan Tool prompts pertaining to the Auto Bleed procedure will be given. After exiting the bleed procedure, relieve bleed pressure and disconnect bleed equipment per manufacturers instructions. Failure to properly relieve pressure may result in spilled brake fluid causing damage to components and painted surfaces.

1. Raise the vehicle on a suitable support.
2. Remove all four tire and wheel assemblies.
3. Inspect the brake system for leaks and visual damage. Refer to Brake Fluid Loss or Symptoms - Hydraulic Brakes. Repair or replace as needed.
4. Inspect the battery state of charge.
5. Install a scan tool.
6. Turn ON the ignition, with the engine OFF.
7. With the scan tool, establish communications with the EBCM. Select Special Functions. Select Automated Bleed from the Special Functions menu.
8. Bleed the base brake system.
9. Follow the scan tool directions until the desired brake pedal height is achieved.
10. If the bleed procedure is aborted, a malfunction exists. Perform the following steps before resuming the bleed procedure:
- If a DTC is detected, refer to Diagnostic Trouble Code
(DTC) List and diagnose the appropriate DTC.
- If the brake pedal feels spongy, perform the conventional brake bleed procedure again.
11. When the desired pedal height is achieved, press the brake pedal in order to inspect for firmness.
12. Remove the scan tool.
13. Install the tire and wheel assemblies.
14. Inspect the brake fluid level.
15. Road test the vehicle while inspecting that the pedal remains high and firm

Chicago1

I will need to do this when the car is back on the road since I swapped pumps and module. I assume you bleed the brakes first to get the air out of the lines then do this to get the rest of the air out? Does that makes sense?

5 Liter Eater

Roger, I had to have this done and I just took it to Strickland. Was in and out in an hour.

fisher auto

Pretty sure any decent scanner will do it!

Chrisrokc

Does the HPTuners suite have this ability?

5 Liter Eater

Nope. It's a BCM function.

gotjuice?

You can just bleed it the old fashion way without any issues.

regorih

I have bled the system with the two person method with the car on and off and still no improvement.

Chicago1

I was under the assumption you still have to purge the solenoids in the abs pump and the only way to properly do that is with a tech 2

5 Liter Eater

If you've opened the sytem, to say install a line lock, it's the only way I know of to make sure it's purged.

WIKU

HELLO, dear sir. I rarely post here, but I see your in a jam.Figure I might do my good deed for the year. Pm me if you have not fixed it yet.

sami85L98

You can do it without scanner, grab your friend and let him be on the brake pedal, and you crack open each line at the ABS unit yes ABS unit just like you do at the brake caliper , instead of brake bleeder at caliper, you bleed lines at ABS and treat that as bleeder nut.

Thats how i did mine. GL.

vrybad

I've dropped a couple C5 drivetrains, and each time, I have replaced the line that runs from the ABS unit across the front crossmember to the pass side front caliper (just to make it unnecessary to remove the line again if the front cradle has to come out again, ran the new line around the firewall).

I also had no trouble or peculiar conditions when bleeding the brake system.

Never knew about the scanner method, but good info to have.

gotjuice?

I do a lot of brake work, You can do it the old fashioned way. If you want to bleed the ABS block you can activate the ABS on a wet area road test. It's a pain to bleed with the Tech 2.

Sleeper S10

I upgraded to C5/C6 Kore 3 kit on my S10 and spent months trying to get a pedal with no luck.

Thought of buying a China Tech 2 to try this Digital Bleed that I was skeptical about.
Instead I purchased an Auto Enginuity that IS the most affordable scan tool to offer this and for the same $$$ as a China Tech 2 but REAL.

So this worked for me and I was super happy.

If your try the slippery surface deal it's crap! You'd have to find that slippery road to activate your ABS and come home to jack up your ride, to then bleed your brakes, repeating this several times is pure BS and dangerous.

Who wants to jack up your ride all day long!

With my AE or Tech 2 it takes several times of doing the procedure until you get the desired pedal. Not just one time or one run on a slippery road!

And what if like me you had NO brakes at all to begin with?

In the end the best investment for me.

You'd be surprised on how some old school mechanics will tell you, you don't need this when everything I learnt on this that gave me the nudge to buy one was from modern tech mechanics who suggested one!

I talk about it on this page in my 402 swap.

http://www.s10forum.com/forum/f213/s...6/index23.html