Popping/thump from the trunk area? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

SimpleGreen · 05-03-2012, 11:11 PM

2012 1LT V6 Camaro - 540 miles on the clock.

I've noticed every morning, about a 1/4 mile from my house I pull up to a stop sign at the main highway. Slight uphill incline but the roadway itself is good. No potholes or uneven lanes. It seems every morning when I get to this spot if my radio is down I hear 'pop.....pop....pop....pop pop pop pop pop' and then I pull out onto the road and I never hear it again until the next morning at the same intersection. So weird. It sounds like its coming from the rear/trunk area? It's kinda like a pop/thump sound. Who knows, it may do it other times during my drive but I've only ever heard it at this stop sign. It does a few pops with nearly equal time between all of them, then several fast ones, and that's it! Nothing. Maybe this section of the road is haunted? Is there something going on in the back of my car?

Hell with it, maybe I just need to listen to the radio louder!

JusticePete · 05-03-2012, 11:14 PM

Do you hear this as you are turning a corner onto the road from a stop or going straight?

SimpleGreen · 05-03-2012, 11:31 PM

Quote:

Originally Posted by JusticePete

Do you hear this as you are turning a corner onto the road from a stop or going straight?

Sitting at a dead stop pointing straight. The second day it started making the noise I let off the brakes and hopped back on them real quick to see if that made a difference but it went on just like it always does.

It doesn't....bother me....exactly....but I'm awfully curious about it.

Sure as I'm typing here now I bet it will do it in the morning again! I'll try more random things, lol.

JusticePete · 05-03-2012, 11:42 PM

Quote:

Originally Posted by SimpleGreen

Sitting at a dead stop pointing straight. The second day it started making the noise I let off the brakes and hopped back on them real quick to see if that made a difference but it went on just like it always does.

It doesn't....bother me....exactly....but I'm awfully curious about it.

Sure as I'm typing here now I bet it will do it in the morning again! I'll try more random things, lol.

Your suspension is stock?

LimaCharlie · 05-03-2012, 11:58 PM

It sounds like someone is tapping their finger on the trunk lid, correct? About 5 times? I believe it is a pressure release valve on the gas tank. It is part of the EVAP emission system on the car. This is normal. My car does it. There are threads on this site talking about it too.

http://www.camaro5.com/forums/showthread.php?t=65824

mjrracing97 · 05-04-2012, 12:37 AM

Could it be the mechanic still in the trunk from the last time he left greasy finger prints in your door handle?

Sorry had to ask.

Firebreed · 05-04-2012, 07:59 AM

Its the trunk monkey

Sent from my SCH-I510 using Tapatalk 2

SimpleGreen · 05-04-2012, 03:08 PM

It's def that evap solenoid apparently. It's VERY consistent in its timing. I sat in the driveway longer than usual this morning because I was reading this thread on my cell phone waiting for the car to warm up and it did the whole 'tap-pop-whatever the hell' orchestra while driving down my street when it usually does it right around the corner sitting at the stop light.

No worries.

Thanks!

latemodel3 · 05-04-2012, 03:31 PM

Quote:

Originally Posted by Firebreed

Its the trunk monkey

Sent from my SCH-I510 using Tapatalk 2

lmao you beat me to it.

strych9 · 05-04-2012, 04:08 PM

Funny, I noticed mine doing this yesterday. Never heard it before. Loud little bugger.

itsadryheat79 · 05-04-2012, 04:17 PM

Quote:

Originally Posted by LimaCharlie

It sounds like someone is tapping their finger on the trunk lid, correct? About 5 times? I believe it is a pressure release valve on the gas tank. It is part of the EVAP emission system on the car. This is normal. My car does it. There are threads on this site talking about it too.

http://www.camaro5.com/forums/showthread.php?t=65824

I hear about this all the time from many new owners. Many in the Camaro club have started to call it "The trunk monkey" And it has been knocking since the original 2010's came out on both the automatic and the manual V8s - just ignore it or turn up the radio....

jeepguy_1980 · 05-04-2012, 04:37 PM

I hear a slight bang from my trunk every so often. It's typically at very low speed and happens only once every few weeks. I've heard it since the first week I bought my car.

05-03-2012, 11:11 PM	#1
SimpleGreen Drives: 2015 2SS/RS Join Date: Apr 2012 Location: Southeast Louisiana Posts: 2,112	Popping/thump from the trunk area? 2012 1LT V6 Camaro - 540 miles on the clock. I've noticed every morning, about a 1/4 mile from my house I pull up to a stop sign at the main highway. Slight uphill incline but the roadway itself is good. No potholes or uneven lanes. It seems every morning when I get to this spot if my radio is down I hear 'pop.....pop....pop....pop pop pop pop pop' and then I pull out onto the road and I never hear it again until the next morning at the same intersection. So weird. It sounds like its coming from the rear/trunk area? It's kinda like a pop/thump sound. Who knows, it may do it other times during my drive but I've only ever heard it at this stop sign. It does a few pops with nearly equal time between all of them, then several fast ones, and that's it! Nothing. Maybe this section of the road is haunted? Is there something going on in the back of my car? Hell with it, maybe I just need to listen to the radio louder! __________________ 2015 Camaro 2SS/RS SIM 2016 Jeep Wrangler 2DR Willys Wheeler 1993 C1500 Single Cab Stepside 5.3L LS Swap

05-03-2012, 11:58 PM	#5
LimaCharlie Drives: 2011 Camaro SS/RS - 2004 Silverado Join Date: Mar 2010 Location: Las Vegas, NV Posts: 2,989	It sounds like someone is tapping their finger on the trunk lid, correct? About 5 times? I believe it is a pressure release valve on the gas tank. It is part of the EVAP emission system on the car. This is normal. My car does it. There are threads on this site talking about it too. http://www.camaro5.com/forums/showthread.php?t=65824 __________________ 2011 Summit White Camaro 1SS/RS -6.2 LS3, TR6060, 3.45, G80 2004 Black Silverado 1500 2WD Regular Cab, Short Bed -5.3 LM7, 4L60E, 3.42, G80 2014 White Caprice PPV -6.0 L77, 6L80E, 2.92, G80

05-04-2012, 07:59 AM	#7
Firebreed Got Boost? Drives: 2011 1SS/RS M6 SLP TVS 2300 Join Date: Oct 2010 Location: San Diego, CA Posts: 404	Its the trunk monkey Sent from my SCH-I510 using Tapatalk 2 __________________ 2011 1SS/RS M6 MOD List: SLP 2300 Supercharged, Flowmaster AT Cat back, aux 4 guage cluster, 12" kicker sub and Kicker Zx400.1 amp, PFADT Lowering springs CAI Inc. CAI, Hurst Short throw shifter, JBA 1 7/8 Long tube headers. Future Mods: 416ci stroker.

05-04-2012, 03:08 PM	#8
SimpleGreen Drives: 2015 2SS/RS Join Date: Apr 2012 Location: Southeast Louisiana Posts: 2,112	It's def that evap solenoid apparently. It's VERY consistent in its timing. I sat in the driveway longer than usual this morning because I was reading this thread on my cell phone waiting for the car to warm up and it did the whole 'tap-pop-whatever the hell' orchestra while driving down my street when it usually does it right around the corner sitting at the stop light. No worries. Thanks! __________________ 2015 Camaro 2SS/RS SIM 2016 Jeep Wrangler 2DR Willys Wheeler 1993 C1500 Single Cab Stepside 5.3L LS Swap

05-04-2012, 04:08 PM	#10
strych9 I'll be back... Drives: Subaru, HD Road Glide Special Join Date: Apr 2012 Location: Omaha, NE Posts: 3,036 View My Garage	Funny, I noticed mine doing this yesterday. Never heard it before. Loud little bugger. __________________ Bye bye, Bumblebee! --------------------------------------------------------------------------------------- Build Journal My Garage GoPro Mic Hack

05-03-2012, 11:14 PM	#2
JusticePete Drives: Camaro Justice Join Date: Jun 2007 Location: Virginia Posts: 20,174	Do you hear this as you are turning a corner onto the road from a stop or going straight?

05-04-2012, 12:37 AM	#6
mjrracing97 Bumblebee1961 Drives: 2012 Camaro SS Transformers Edition Join Date: Apr 2010 Location: Czar, Alberta Posts: 1,118 View My Garage	Could it be the mechanic still in the trunk from the last time he left greasy finger prints in your door handle? Sorry had to ask.

05-04-2012, 04:37 PM	#12
jeepguy_1980 Drives: 2010 Camaro 1SS Join Date: May 2010 Location: Newport News Posts: 1,310 View My Garage	I hear a slight bang from my trunk every so often. It's typically at very low speed and happens only once every few weeks. I've heard it since the first week I bought my car.