More Fun... Brake Light

CactusWill · 10-04-2008, 10:21 PM

Ok, so a couple weeks ago I noticed that the brake pedal was getting softer and stopping power was diminishing. A few days later, the brake light started coming on and I knew I would have to get to work on it soon.

So a couple days ago, I got the oem ceramic pad and disc set and installed them a few mins ago.

Now before, the front calipers had been doing that 'creaking' sound thing, which mysteriously disappeared... Come to find out, one pin on each caliper was completely frozen in place with rust.

I tore the calipers down, resurfaced the pins and lubed them all the way to heaven and back. Put on the new rotors and pads, and alero stops on a dime again now.

But the brake light CAME BACK ON AGAIN. And I'm not talking about the abs light because of the sensors, I'm talking about the reg brake light.

???

[ion] C2 · 10-04-2008, 10:34 PM

lol

look at your brake fluid level, you likely have a caliper leak. brake fluid rusts ferrous materials, so surprise at your caliper pin rust. check your lines too

CactusWill · 10-04-2008, 10:38 PM

There is no leak.

[ion] C2 · 10-04-2008, 11:04 PM

There is no spoon.

Brake fluid level sensor then.

CactusWill · 10-04-2008, 11:06 PM

Thats what I thought of when you mentioned that, the sending unit. But I think its bizarre that it happened in coincidence with the brake performance going bad, so I'm thinking it has to be related.

CactusWill · 10-06-2008, 12:56 PM

Anyone?

black · 10-06-2008, 01:02 PM

coincidence or not. check it.

who cares if it does not make sense.

just check it.

CactusWill · 10-06-2008, 01:36 PM

Quote:

Originally Posted by black

coincidence or not. check it.

who cares if it does not make sense.

just check it.

Check, what?

[ion] C2 · 10-06-2008, 01:40 PM

the sensor or "sending unit" as you like to call that plug in the brake fluid reservoir

if it's not low, if you don't have leaks, and your braking system functions flawlessly as you say, then the sensor MUST be bad.

cavaliers60 · 10-06-2008, 01:44 PM

you might need to invest in some crossed drilled brake lines.

j/k

I'd also say the sensor could be bad... so I second Ion's assumption.

black · 10-06-2008, 02:53 PM

Quote:

Originally Posted by CactusWill

Check, what?

sending unit.

TheEdgeofSanity · 10-06-2008, 03:04 PM

lol, brakes are important so don't screw around with them... i learned the hard way and ended up in a ditch.

CactusWill · 10-06-2008, 05:47 PM

Thanks all. I'll replace the sending unit and go from there.

CactusWill · 11-05-2008, 01:33 PM

Quote:

Originally Posted by [ion] C2

the sensor or "sending unit" as you like to call that plug in the brake fluid reservoir

if it's not low, if you don't have leaks, and your braking system functions flawlessly as you say, then the sensor MUST be bad.

Replaced it and brake light is still on.

Gr1m · 11-05-2008, 01:59 PM

get your brake lines bled

Alerosaint · 11-05-2008, 02:00 PM

Are you talking about ther brake light on the dash??? Aint that connected to the hand brake??

CactusWill · 11-05-2008, 02:02 PM

Quote:

Originally Posted by Alerosaint

Are you talking about ther brake light on the dash??? Aint that connected to the hand brake??

Yes on the dash. And its not the E brake, I checked that already

Quote:

Originally Posted by Gr1m

get your brake lines bled

Damn. I'll do it again but I still don't think thats it

Cliff8928 · 11-06-2008, 02:20 AM

Quote:

Originally Posted by GM

Brake Warning System Description and Operation

Brake System Indicator

The IPC illuminates the brake indicator when the following occurs:

The body control module (BCM) detects that the park brake is engaged. The IPC receives a class 2 message from the BCM indicating the park brake status. If the vehicle speed is greater than 5 km/h (3.1 mph) with the park brake engaged, the BCM sends a class 2 message to the radio in order to activate an audible warning.
The electronic brake control module (EBCM) detects a low brake fluid condition (signal circuit is low). The IPC receives a class 2 message from the EBCM requesting illumination. The IPC sends a class 2 message to the BCM indicating that the brake indicator is illuminated due to a brake malfunction. The BCM sends a class 2 message to the radio in order to activate an audible warning.
The EBCM detects a malfunction in the braking system. The IPC receives a class 2 message from the EBCM requesting illumination. The IPC sends a class 2 message to the BCM indicating that the brake indicator is illuminated due to a brake malfunction. The BCM sends a class 2 message to the radio in order to activate an audible warning.
The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.
The IPC detects a loss of class 2 communications with the EBCM.

.....

CactusWill · 11-06-2008, 07:13 AM

Quote:

Originally Posted by Cliff8928

The EBCM detects a malfunction in the braking system. The IPC receives a class 2 message from the EBCM requesting illumination. The IPC sends a class 2 message to the BCM indicating that the brake indicator is illuminated due to a brake malfunction. The BCM sends a class 2 message to the radio in order to activate an audible warning.
The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.
The IPC detects a loss of class 2 communications with the EBCM.

Something to do with this part. It helps a little, but not much lol

CarGodz · 11-06-2008, 06:01 PM

Now I'm not certain about the Aleros, but I know some GM vehicles are infamous about the lights not going out after the problem is fixed... reason: The computer must be reset... Now his can be done by the dealer, with some hand held OBD II scanners, and in some cases disconnecting the battery and reconnect after 30-45 seconds.

I don't know if that'll help as it may still yet be another problem, but it's worth a shot.