Hissing Behind Passenger Side of Dash - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

snymat68 · 09-16-2013, 08:55 AM

Hi all. The

didn't really yield any results so I'll just ask.

The other day I started noticing a hissing coming from behind the passenger side of the dash. I'm not exactly sure when it started, but I THINK it was after having the RPM's around 6k during a "spirited, loss of traction evacuation from a stop sign area".

(I know I did not redline.) It doesn't sound like it's something leaking into the cabin, but more like the sounds of a gas passing through an orifice in a metal pipe or something. It only happens once I get above 2500 rpm. It is not related to the gear I'm in, nor is it related to the state of the AC system (it happens during all on/off combinations of AC and vent). It is loudest during acceleration during the first few minutes after turning on the car. After that it is still happening but maybe to a slightly lesser extent. I don't know if maybe it's something to do with the AC system behind the dash? What are your guys thoughts? Just thought I'd see if I could learn anything before taking it to the dealer.

TooCool5 · 09-16-2013, 09:15 AM

Open this hood and make sure its not coming from the engine area.
There is a PCV orifice on the pass rear valve cover that sometimes hisses.

snymat68 · 09-16-2013, 09:36 AM

Quote:

Originally Posted by TooCool5

Open this hood and make sure its not coming from the engine area.
There is a PCV orifice on the pass rear valve cover that sometimes hisses.

I checked the engine bay while the car was at idle and didn't notice anything, but the problem doesn't occur at idle. I'll have to get my wife to help me tonight and see what I can find. (I checked all the lines for the catch can. They're fine.)

Chevrolet Customer Svc · 09-16-2013, 08:15 PM

Quote:

Originally Posted by snymat68

Hi all. The

didn't really yield any results so I'll just ask.

The other day I started noticing a hissing coming from behind the passenger side of the dash. I'm not exactly sure when it started, but I THINK it was after having the RPM's around 6k during a "spirited, loss of traction evacuation from a stop sign area".

(I know I did not redline.) It doesn't sound like it's something leaking into the cabin, but more like the sounds of a gas passing through an orifice in a metal pipe or something. It only happens once I get above 2500 rpm. It is not related to the gear I'm in, nor is it related to the state of the AC system (it happens during all on/off combinations of AC and vent). It is loudest during acceleration during the first few minutes after turning on the car. After that it is still happening but maybe to a slightly lesser extent. I don't know if maybe it's something to do with the AC system behind the dash? What are your guys thoughts? Just thought I'd see if I could learn anything before taking it to the dealer.

snymat68,

Apologies about the hissing concerns with your Camaro. While I understand you're seeking opinions of this matter, we're also here if you need additional assistance. Feel free to drop us a message if needed.

William R.
Chevrolet Customer Care

FanDamNCSU · 09-16-2013, 08:22 PM

I have a similar sound that my car produces also during acceleration. My guess is it has something to do with the coolant system, but I'm no mechanic. If you find out anything, please let me know.

snymat68 · 09-17-2013, 09:21 PM

I've determined that it only happens under load. If I just rev the engine it doesn't happen, or at least not audibly. Once I get a chance to take it to the dealer I'll let you know what's up.

FanDamNCSU · 09-18-2013, 02:59 PM

Quote:

Originally Posted by snymat68

I've determined that it only happens under load. If I just rev the engine it doesn't happen, or at least not audibly. Once I get a chance to take it to the dealer I'll let you know what's up.

Yup, this sounds similar to my issue.

Chevrolet Customer Svc · 09-19-2013, 05:31 PM

Quote:

Originally Posted by snymat68

I've determined that it only happens under load. If I just rev the engine it doesn't happen, or at least not audibly. Once I get a chance to take it to the dealer I'll let you know what's up.

Appreciate it,

I look forward to your updates.

William R.
Chevrolet Customer Care

snymat68 · 10-01-2013, 03:14 PM

I finally got the chance to make an appointment at Grabiak's. I drop it off Monday evening. We'll see what they find.

Speed2acer · 10-01-2013, 05:03 PM

Happened with mine too. Have the dealer check the AC condenser vent tube. some may get stuck at the end and hiss. easy fix.

FanDamNCSU · 10-01-2013, 10:07 PM

Quote:

Originally Posted by snymat68

I finally got the chance to make an appointment at Grabiak's. I drop it off Monday evening. We'll see what they find.

Thanks for keeping us updated.

Chevrolet Customer Svc · 10-02-2013, 05:23 PM

Quote:

Originally Posted by snymat68

I finally got the chance to make an appointment at Grabiak's. I drop it off Monday evening. We'll see what they find.

Thank you for updating us on your dealer appointment, snymat68. Please let us know how everything goes. Do not hesitate to contact us via private message if you would like to further discuss your situation. We are here to assist.

Sincerely,

Laura M. (assisting William R.)
Chevrolet Customer Care

snymat68 · 10-08-2013, 09:24 AM

Dropped it off last night. Waiting to hear back with their findings. Will keep everyone posted.

FanDamNCSU · 10-08-2013, 10:18 AM

Quote:

Originally Posted by snymat68

Dropped it off last night. Waiting to hear back with their findings. Will keep everyone posted.

Thanks!

09-16-2013, 08:55 AM	#1
snymat68 Drives: 2013 Blue Ray 1LS M6 Join Date: Apr 2013 Location: Pittsburgh, PA Posts: 1,227 View My Garage	Hissing Behind Passenger Side of Dash Hi all. The didn't really yield any results so I'll just ask. The other day I started noticing a hissing coming from behind the passenger side of the dash. I'm not exactly sure when it started, but I THINK it was after having the RPM's around 6k during a "spirited, loss of traction evacuation from a stop sign area". (I know I did not redline.) It doesn't sound like it's something leaking into the cabin, but more like the sounds of a gas passing through an orifice in a metal pipe or something. It only happens once I get above 2500 rpm. It is not related to the gear I'm in, nor is it related to the state of the AC system (it happens during all on/off combinations of AC and vent). It is loudest during acceleration during the first few minutes after turning on the car. After that it is still happening but maybe to a slightly lesser extent. I don't know if maybe it's something to do with the AC system behind the dash? What are your guys thoughts? Just thought I'd see if I could learn anything before taking it to the dealer. __________________ Performance Mods Elite Catch Can \| CAI Intake with Scoop & Washer Bottle Relocation \| MRT v2 Axle-Back Exhaust \| MagnaFlow Resonated X-Pipe \| Resonator Delete \| Vmax Ported Throttle Body \| GM Strut Tower Brace \| JDP Tow Hook \| Vitesse Throttle Controller Aesthetic Mods Chrome Peek-A-Boo Door Handles \| Interior Accessories Kit \| OEM RS HIDs w/ 6000k Bulbs & 5000k LED Fogs \| Tail Light, Marker Light, & Turn Signal Tint \| Tru-Sequence Sequential Turn Signals & Brake Lights \| Silver Fade Gill Stripes \| Carbon Fiber Bowties \| Various Chrome/Painted/Carbon Fiber Items

09-16-2013, 09:15 AM	#2
TooCool5 Drives: 2010 Camaro 1LS 3.6 LLT V6 325 HP Join Date: May 2009 Location: LS Posts: 4,244 View My Garage	Open this hood and make sure its not coming from the engine area. There is a PCV orifice on the pass rear valve cover that sometimes hisses. __________________ 2010 Camaro Auto, Inferno Orange, Titanium Interior, Gearhead Wheels AIRAID CAI

09-16-2013, 08:22 PM	#5
FanDamNCSU Drives: 2010 CGM 2SS/RS - L99 Join Date: Mar 2013 Location: Southern Pines, NC Posts: 197	I have a similar sound that my car produces also during acceleration. My guess is it has something to do with the coolant system, but I'm no mechanic. If you find out anything, please let me know. __________________ 2010 CGM 2SS/RS - L99 --------------------------------- Performance: Vararam CAI, Vmax Ported Throttle Body, GM Performance Dual Mode Exhaust (NPP), JRE Tune, Hotchkis TVS Stage 2 Track Pack, Vitesse Paddle Shifters, Vitesse Throttle Controller Functional: Hex Vents, Elite Catch Can, WeatherTech Digital Fit Mats, Escort Passport Max Cosmetic: Heritage Grill, GM Splash Guards, ZL1 Rockers

09-17-2013, 09:21 PM	#6
snymat68 Drives: 2013 Blue Ray 1LS M6 Join Date: Apr 2013 Location: Pittsburgh, PA Posts: 1,227 View My Garage	I've determined that it only happens under load. If I just rev the engine it doesn't happen, or at least not audibly. Once I get a chance to take it to the dealer I'll let you know what's up. __________________ Performance Mods Elite Catch Can \| CAI Intake with Scoop & Washer Bottle Relocation \| MRT v2 Axle-Back Exhaust \| MagnaFlow Resonated X-Pipe \| Resonator Delete \| Vmax Ported Throttle Body \| GM Strut Tower Brace \| JDP Tow Hook \| Vitesse Throttle Controller Aesthetic Mods Chrome Peek-A-Boo Door Handles \| Interior Accessories Kit \| OEM RS HIDs w/ 6000k Bulbs & 5000k LED Fogs \| Tail Light, Marker Light, & Turn Signal Tint \| Tru-Sequence Sequential Turn Signals & Brake Lights \| Silver Fade Gill Stripes \| Carbon Fiber Bowties \| Various Chrome/Painted/Carbon Fiber Items

10-01-2013, 03:14 PM	#9
snymat68 Drives: 2013 Blue Ray 1LS M6 Join Date: Apr 2013 Location: Pittsburgh, PA Posts: 1,227 View My Garage	I finally got the chance to make an appointment at Grabiak's. I drop it off Monday evening. We'll see what they find. __________________ Performance Mods Elite Catch Can \| CAI Intake with Scoop & Washer Bottle Relocation \| MRT v2 Axle-Back Exhaust \| MagnaFlow Resonated X-Pipe \| Resonator Delete \| Vmax Ported Throttle Body \| GM Strut Tower Brace \| JDP Tow Hook \| Vitesse Throttle Controller Aesthetic Mods Chrome Peek-A-Boo Door Handles \| Interior Accessories Kit \| OEM RS HIDs w/ 6000k Bulbs & 5000k LED Fogs \| Tail Light, Marker Light, & Turn Signal Tint \| Tru-Sequence Sequential Turn Signals & Brake Lights \| Silver Fade Gill Stripes \| Carbon Fiber Bowties \| Various Chrome/Painted/Carbon Fiber Items

10-01-2013, 05:03 PM	#10
Speed2acer Drives: 2010 2RS/SS Summit White/Inferno Join Date: Sep 2011 Location: Wildomar, Ca Posts: 155 View My Garage	Happened with mine too. Have the dealer check the AC condenser vent tube. some may get stuck at the end and hiss. easy fix. __________________

10-08-2013, 09:24 AM	#13
snymat68 Drives: 2013 Blue Ray 1LS M6 Join Date: Apr 2013 Location: Pittsburgh, PA Posts: 1,227 View My Garage	Dropped it off last night. Waiting to hear back with their findings. Will keep everyone posted. __________________ Performance Mods Elite Catch Can \| CAI Intake with Scoop & Washer Bottle Relocation \| MRT v2 Axle-Back Exhaust \| MagnaFlow Resonated X-Pipe \| Resonator Delete \| Vmax Ported Throttle Body \| GM Strut Tower Brace \| JDP Tow Hook \| Vitesse Throttle Controller Aesthetic Mods Chrome Peek-A-Boo Door Handles \| Interior Accessories Kit \| OEM RS HIDs w/ 6000k Bulbs & 5000k LED Fogs \| Tail Light, Marker Light, & Turn Signal Tint \| Tru-Sequence Sequential Turn Signals & Brake Lights \| Silver Fade Gill Stripes \| Carbon Fiber Bowties \| Various Chrome/Painted/Carbon Fiber Items