L99 Click click click at the rear axle differential gear housing - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Goliath · 12-24-2010, 09:57 AM

This happen everytime/morning. Start the car in the morning cold engine, and after 2-3 minutes, there are 5 tickings sound at the rear axle differential gear housing. I actually got down close up at the rear axle to pin point where the clicking noise were coming from.

Is this normal for all L99 A6 ? Has anyone has the same clicking noise? I have 2010 1SS L99 A6, made in April 2009.

nitto85 · 12-24-2010, 10:12 AM

I'm not sure if this a problem or not, but I have this as well.

Godon Hutchinson · 12-24-2010, 10:15 AM

Its normal, thats the system running a fuel preesure test. they all do it. do a search in the forum for more info.

Goliath · 12-24-2010, 10:37 AM

I couldn't find any post about the clicking noise in the rear axle.

shiftz33 · 12-24-2010, 11:34 AM

About a year and half ago I posted about the 5 clicks that occur about 2 to 3 minutes after cold startup with my L99. I found that the emission control system was going through a system test/reset and that was causing the "clicking" is was hearing inside of the car.

Here is the thread on that issue:

10 seconds of "clicks" after 3 mins 30 seconds of driving

It sounds like someone is "tapping" on the back glass or trunk area when they occur that's what I found "interesting" when I first heard them.

I've not had L99 rear axle housing make any clicking sounds, but the rear axles have produced "clicks" when shifting between park/reverse or drive/reverse. The "new spacer washer and new nuts" for each axle as outlined in the TSB for that issue were installed about 4 months ago and I've not hear a "click" out of my rear axles since.

2010victoryredss_ron · 12-24-2010, 12:24 PM

me too,,same clicks

*mlee* · 12-24-2010, 12:29 PM

Quote:

Originally Posted by Godon Hutchinson

Its normal, thats the system running a fuel preesure test. they all do it. do a search in the forum for more info.

Goliath · 12-24-2010, 04:15 PM

I feel better now. Thanks guys/gals.

ducq · 12-25-2010, 04:21 PM

It spooked the hell outta me the first time I ever heard it lol. I did a search and read up about it

blackknight · 12-25-2010, 04:39 PM

Mine does it too. Theres another thread somewhere about it too. Cant find it tho.

Just supposed to be a fuel pressure test. its Normal.

SHWA · 01-12-2011, 02:29 PM

Quote:

Originally Posted by ducq

It spooked the hell outta me the first time I ever heard it lol. I did a search and read up about it

+1

Rock-It Man · 01-12-2011, 07:25 PM

Yup. First time I heard it, I thought someone was throwing rocks at my rear window.

overhaulengines · 01-12-2011, 10:16 PM

i had a clicking noise, this was the problem on my car

http://www.camaro5.com/forums/showpo...62&postcount=4

lupe

12-24-2010, 09:57 AM	#1
Goliath Drives: 2010 Camaro 1SS L99 A6 Join Date: Nov 2010 Location: Texas Posts: 216	L99 Click click click at the rear axle differential gear housing This happen everytime/morning. Start the car in the morning cold engine, and after 2-3 minutes, there are 5 tickings sound at the rear axle differential gear housing. I actually got down close up at the rear axle to pin point where the clicking noise were coming from. Is this normal for all L99 A6 ? Has anyone has the same clicking noise? I have 2010 1SS L99 A6, made in April 2009. __________________ The Most Interesting Man in the World - On Muscle Cars "I don't always drive muscle car, but when I do, I prefer the Camaro. " Last edited by Goliath; 12-24-2010 at 10:15 AM.

12-24-2010, 10:37 AM	#4
Goliath Drives: 2010 Camaro 1SS L99 A6 Join Date: Nov 2010 Location: Texas Posts: 216	I couldn't find any post about the clicking noise in the rear axle. __________________ The Most Interesting Man in the World - On Muscle Cars "I don't always drive muscle car, but when I do, I prefer the Camaro. "

12-24-2010, 11:34 AM	#5
shiftz33 Drives: 17 SS Sedan, 04 SSR Join Date: May 2009 Location: Sacramento Posts: 333	About a year and half ago I posted about the 5 clicks that occur about 2 to 3 minutes after cold startup with my L99. I found that the emission control system was going through a system test/reset and that was causing the "clicking" is was hearing inside of the car. Here is the thread on that issue: 10 seconds of "clicks" after 3 mins 30 seconds of driving It sounds like someone is "tapping" on the back glass or trunk area when they occur that's what I found "interesting" when I first heard them. I've not had L99 rear axle housing make any clicking sounds, but the rear axles have produced "clicks" when shifting between park/reverse or drive/reverse. The "new spacer washer and new nuts" for each axle as outlined in the TSB for that issue were installed about 4 months ago and I've not hear a "click" out of my rear axles since. __________________ RetroCarGuy530 YouTube Channel

12-24-2010, 12:24 PM	#6
2010victoryredss_ron Born: August 27, 2009 Drives: 10CAMARO SS,12CRUZE RS,07 YAM R6 Join Date: Aug 2009 Location: Waterloo, Ontario, Canada Posts: 866 View My Garage	me too,,same clicks __________________ Victory Red 2SS/RS Vin# A9130145

12-24-2010, 04:15 PM	#8
Goliath Drives: 2010 Camaro 1SS L99 A6 Join Date: Nov 2010 Location: Texas Posts: 216	I feel better now. Thanks guys/gals. __________________ The Most Interesting Man in the World - On Muscle Cars "I don't always drive muscle car, but when I do, I prefer the Camaro. "

12-24-2010, 10:12 AM	#2
nitto85 Caffeine Injected Drives: 13 Ram - 05 Widebody 1050rwhp Vette Join Date: Sep 2010 Location: Woodstock, Ga Posts: 1,033	I'm not sure if this a problem or not, but I have this as well.

12-24-2010, 10:15 AM	#3
Godon Hutchinson Drives: 2010 1SS/RS Imperial Blue Metallic Join Date: Sep 2010 Location: Huntington West Va Posts: 443	Its normal, thats the system running a fuel preesure test. they all do it. do a search in the forum for more info.

12-25-2010, 04:21 PM	#9
ducq Drives: 2010 Camaro 1SS/RS LS3 blck w/ IOM Join Date: May 2010 Location: Bay Area, CA Posts: 580	It spooked the hell outta me the first time I ever heard it lol. I did a search and read up about it __________________ TSP 229/236 cam .Magnaflow Comp axleback .KOOKS LT w/ high flow cats .magnapack bullets. C.A.I. Vmax ported TB. Dyno tuned 452hp / 422tq.

12-25-2010, 04:39 PM	#10
blackknight Camaro Lover Drives: 2014 GMC Sierra 5.3L Join Date: Feb 2010 Location: Chicago 'Burbs Posts: 709	Mine does it too. Theres another thread somewhere about it too. Cant find it tho. Just supposed to be a fuel pressure test. its Normal. __________________ No Camaro right now. But I'll be back in one in a few years.

01-12-2011, 07:25 PM	#12
Rock-It Man 376 cubic inches of fun Drives: 2023 Camaro ZL1 A10 Join Date: Jul 2010 Location: MA Posts: 4,027 View My Garage	Yup. First time I heard it, I thought someone was throwing rocks at my rear window.

01-12-2011, 10:16 PM	#13
overhaulengines Drives: Red 2SS/RS M6 Join Date: Apr 2010 Location: San Antonio, Texas Posts: 6,219	i had a clicking noise, this was the problem on my car http://www.camaro5.com/forums/showpo...62&postcount=4 lupe

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