Brake fluid reservoir acting weird... - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Blade · 03-20-2011, 01:35 PM

So yesterday I am draggin away at Zmax in Concord, NC and after a few passes I pop the hood open. One of the guys checkin out the engine, says WTF is all this crap around your brake fluid reservoir. Looked like brake fluid was leaking out, we thought it might be the cap. But the reservoir was full, so that was even more confusing.

Anyway, cleaned the outside of the reservoir, did about 3 more passes, and checked again. Cap is dry, but there is still liquid outside on the reservoir.

So I come home clean it up, reservoir is still full, but some brake fluid just in case. Then I drive to my friends at night, come home and check, everything is dry. This morning I go grocery shopping, come back and check and still dry.

I am totally confused at this point.

Capthowdy · 03-20-2011, 01:39 PM

It's your clutch boiling the fluid out....

Blade · 03-20-2011, 01:39 PM

Quote:

Originally Posted by Capthowdy

It's your clutch boiling the fluid out....

I have an automatic......

Capthowdy · 03-20-2011, 01:45 PM

DOH....then your cap is bad...seen a few posts on this do a search there may be a TSB...

C5RocksC5 · 03-20-2011, 03:15 PM

the cap is bad. when fluid is hot, pressure is built up and the bad sealing cap lets out a bit of fluid.

daveagogo1 · 03-20-2011, 03:25 PM

It's a bad cap. I have the same issue. It's a very small amount but any leaks regarding brake system is not good.

jwoair23 · 03-20-2011, 03:39 PM

I have the same issue, will the dealer replace this? Is there a tsb?

Blade · 03-21-2011, 09:21 AM

Found the TSB...

Quote:

TECHNICAL
Bulletin No.: 09-05-22-005A
Date: March 05, 2010
Subject: Slight Brake Fluid Leak/Weeping Around Master Cylinder Reservoir Cap (Replace Cap)
Models:
2010 Chevrolet Camaro
Built Prior to VIN Breakpoint A9197567
Supercede:
This bulletin is being revised to add a VIN breakpoint. Please discard Corporate Bulletin Number 09-05-22-005 (Section 05 - Brakes).
Condition
Some customers may comment on noticing that the brake master cylinder reservoir cap has a slight leak or is weeping brake fluid.
Cause
This condition may be caused by insufficient sealing of the reservoir cap.
Correction

Replace the master cylinder reservoir cap following the steps below:
1. Remove and discard the original reservoir cap.
Note
If in question on brake fluid or level, refer to Master Cylinder Reservoir Filling, in SI.
2. Check the brake fluid level. If the brake fluid level is above the half-full point, adding brake fluid is not recommended under normal conditions.
3. Wipe clean the outside surface of the master cylinder and/or reservoir.
4. Install a new reservoir cap, GM P/N 20819283.

daveagogo1 · 03-21-2011, 09:30 AM

They need to update that tsb as mine is a 2011 built in december and has this problem. Getting a new cap this week.

clg_98ta · 03-21-2011, 09:44 AM

I had a bad cap as well. It was replaced under warranty - no problems since.

The bad cap seemed to fit and seal well... but within a few days, I'd notice more fluid around the seam on the reservoir. It must not have held enough pressure...

btw, my car was built in Feb 2010.

Camaro Freak · 03-21-2011, 03:50 PM

Just ordered my New cap. And yes it is covered under warranty. Thanks Blade for pointing this out. I checked mine and it does have some there.

blue-bayou · 05-02-2011, 08:57 PM

Hmmmm......Interesting, I noticed the other day paint bubbling p under the master cylinder but I did not see where anything was leaking. Took it in but all they said was that it isn't currently leaking. Special order in March 2010,arrived April 14 2010.

RiCorvette · 01-30-2013, 10:01 AM

Is there an updated TSB to cover up to '13s ?

Ref: Post # 8

Bulletin No.: 09-05-22-005A
Date: March 05, 2010

03-20-2011, 01:35 PM	#1
Blade Drives: 2016 Camaro 2SS BVM Join Date: Dec 2009 Location: Charlotte Posts: 4,689 View My Garage	Brake fluid reservoir acting weird... So yesterday I am draggin away at Zmax in Concord, NC and after a few passes I pop the hood open. One of the guys checkin out the engine, says WTF is all this crap around your brake fluid reservoir. Looked like brake fluid was leaking out, we thought it might be the cap. But the reservoir was full, so that was even more confusing. Anyway, cleaned the outside of the reservoir, did about 3 more passes, and checked again. Cap is dry, but there is still liquid outside on the reservoir. So I come home clean it up, reservoir is still full, but some brake fluid just in case. Then I drive to my friends at night, come home and check, everything is dry. This morning I go grocery shopping, come back and check and still dry. I am totally confused at this point. __________________ Formerly owner of: 2012 2SS/RS Build Thread - Totaled by red light runner 2010 LT/RS Build Thread - Traded in for 2012 2SS 2007 Acura TSX 1992 Oldsmobile Achieva V6 1992 Mercury Sable

03-20-2011, 01:39 PM	#2
Capthowdy Drives: 2010 2SS RS IOM Join Date: Jun 2010 Location: Fort Lauderdale Fl Posts: 1,048	It's your clutch boiling the fluid out.... __________________ THE "MENACE"

03-20-2011, 01:45 PM	#4
Capthowdy Drives: 2010 2SS RS IOM Join Date: Jun 2010 Location: Fort Lauderdale Fl Posts: 1,048	DOH....then your cap is bad...seen a few posts on this do a search there may be a TSB... __________________ THE "MENACE"

03-21-2011, 09:44 AM	#10
clg_98ta Drives: 2010 Camaro 2SS Join Date: Jan 2010 Location: Austin, TX Posts: 2,698 View My Garage	I had a bad cap as well. It was replaced under warranty - no problems since. The bad cap seemed to fit and seal well... but within a few days, I'd notice more fluid around the seam on the reservoir. It must not have held enough pressure... btw, my car was built in Feb 2010. __________________ Black 2SS ordered 1/4/2010, received 2/19/2010

03-21-2011, 03:50 PM	#11
Camaro Freak Drives: 2010 IOM 2LT 334HP Join Date: Feb 2010 Location: NC Posts: 1,586	Just ordered my New cap. And yes it is covered under warranty. Thanks Blade for pointing this out. I checked mine and it does have some there. __________________

03-20-2011, 03:15 PM	#5
C5RocksC5 Banned Drives: 2010 Camaro 2SS/RS Join Date: Jul 2009 Location: Sin City Posts: 697	the cap is bad. when fluid is hot, pressure is built up and the bad sealing cap lets out a bit of fluid.

03-20-2011, 03:39 PM	#7
jwoair23 Drives: 2010 Camaro 2LT Join Date: Jul 2010 Location: Pittsburgh, PA Posts: 134	I have the same issue, will the dealer replace this? Is there a tsb?

05-02-2011, 08:57 PM	#12
blue-bayou Drives: 2010 IBM SS/RS/Stick Join Date: Jul 2010 Location: The Holler Posts: 235	Hmmmm......Interesting, I noticed the other day paint bubbling p under the master cylinder but I did not see where anything was leaking. Took it in but all they said was that it isn't currently leaking. Special order in March 2010,arrived April 14 2010. __________________

01-30-2013, 10:01 AM	#13
RiCorvette Drives: 2017 Corvette Grand Sport 3LT Join Date: Oct 2010 Location: Center of the known Universe Posts: 863	Is there an updated TSB to cover up to '13s ? Ref: Post # 8 Bulletin No.: 09-05-22-005A Date: March 05, 2010

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