Rear suspension popping noise after BMR trailing arm replaced - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

sun47me · 06-29-2016, 05:20 PM

I replaced the trailing arms on my 2011 camaro as. After 1500-2000mi. I can hear popping noise coming from the rear supension when going thru rough roads not all the time but 100% when body twist. Does anyone have same problem and what was the cause and fix?

JusticePete · 06-29-2016, 08:27 PM

What did you replace them with?

sun47me · 07-03-2016, 06:25 PM

I replace the stock trailing arm and bushing with a BMR trailing arm and Bushing. I was fine for more than 2 months. I have taken it a dealer and a friendly service station. They can replicate the noise but cannot find what is causing them

JusticePete · 07-03-2016, 06:26 PM

What endlinks do you have?

sun47me · 07-04-2016, 06:08 PM

If you are talking about the sway bar end links. They are still the stock. Aside from the trailing arms all are still stock.

Magz_rule · 07-04-2016, 06:39 PM

Grease them until they are bulging/oozing out the sides of the bushing.. and then a bit more lol. I have to constantly regrease them or they make noise over any rough roads

sun47me · 07-05-2016, 01:45 PM

I will try to grease them, this weekend and let you guys know. Thanks for the input.

BMR Sales · 07-05-2016, 01:48 PM

Sorry, I've had a few Vacation days. Let me know the results

sun47me · 07-09-2016, 05:22 AM

So I had the time to grease it Friday. I pumped grease with the vehicle wheel on the ground as BMR recommended. I pumped greased until I saw grease oozing on the sides, and I give it a couple more pums. When I removed the greaser, grease was oozing out of the zerk fitting. Wipe off the extra grease and took the car for a test drive. The noise was still there but now it has a higher frequency. Before it sound like a popping noise, now it sound like metal to metal. Everything looks tight. My paint marks on the head bolts and nut when I installed the trailing arms are still aligned.
Any other suggestions? Thanks in advance.

hesster · 07-09-2016, 07:20 AM

Was anything other than the RTA bolts/arm loosened up during installation? Did you replace the Knuckle bushing with the Knuckle still installed in the vehicle? I imagine this is a challenge and required a press tool as I used. So - IF you are sure it is the RTA causing the issue, unbolt one end at a time, articulate it fully to check for free movement and no binding, and inspect the sleeves in the bushings for grease etc.

flyer08 · 07-09-2016, 08:14 AM

Had a similar issue and it was a couple of bolts weren't torq'd properly and were really loose.

BMR Sales · 07-11-2016, 03:52 PM

Quote:

Originally Posted by flyer08

Had a similar issue and it was a couple of bolts weren't torq'd properly and were really loose.

That would be my guess in this case

Black_SS10 · 07-11-2016, 04:06 PM

Quote:

Originally Posted by flyer08

Had a similar issue and it was a couple of bolts weren't torq'd properly and were really loose.

Quote:

Originally Posted by BMR Sales

That would be my guess in this case

This is exactly why I am so adamant about torque specs and use a torque wrench on everything.

JusticePete · 07-11-2016, 04:31 PM

Unless you used all new GM bolts and fasteners, the torque values are going to be off. Almost every suspension nut is quenched and single use. Installing once and removing in once reduced the quench. Most people reuse these fasteners. In that case they need to be mechanic tight and installed with LocTite. Road debris, corrosion and rust alter TQ values. Damaged threads alter torque values.

Following factory procedures and torque specs is never a bad plan. However, factory specs are set for everything in new condition under ideal assembly conditions. Just something to keep in mind.

06-29-2016, 05:20 PM	#1
sun47me Drives: 2011 Camaro 2SS Join Date: Mar 2011 Location: Dewitt Posts: 5	Rear suspension popping noise after BMR trailing arm replaced I replaced the trailing arms on my 2011 camaro as. After 1500-2000mi. I can hear popping noise coming from the rear supension when going thru rough roads not all the time but 100% when body twist. Does anyone have same problem and what was the cause and fix?

06-29-2016, 08:27 PM	#2
JusticePete Drives: Camaro Justice Join Date: Jun 2007 Location: Virginia Posts: 20,174	What did you replace them with?

07-03-2016, 06:25 PM	#3
sun47me Drives: 2011 Camaro 2SS Join Date: Mar 2011 Location: Dewitt Posts: 5	I replace the stock trailing arm and bushing with a BMR trailing arm and Bushing. I was fine for more than 2 months. I have taken it a dealer and a friendly service station. They can replicate the noise but cannot find what is causing them

07-03-2016, 06:26 PM	#4
JusticePete Drives: Camaro Justice Join Date: Jun 2007 Location: Virginia Posts: 20,174	What endlinks do you have?

07-04-2016, 06:08 PM	#5
sun47me Drives: 2011 Camaro 2SS Join Date: Mar 2011 Location: Dewitt Posts: 5	If you are talking about the sway bar end links. They are still the stock. Aside from the trailing arms all are still stock.

07-04-2016, 06:39 PM	#6
Magz_rule Drives: 2011 Camaro SS Join Date: May 2014 Location: NY Posts: 180	Grease them until they are bulging/oozing out the sides of the bushing.. and then a bit more lol. I have to constantly regrease them or they make noise over any rough roads

07-05-2016, 01:45 PM	#7
sun47me Drives: 2011 Camaro 2SS Join Date: Mar 2011 Location: Dewitt Posts: 5	I will try to grease them, this weekend and let you guys know. Thanks for the input.

07-05-2016, 01:48 PM	#8
BMR Sales Drives: Race Car Join Date: Sep 2009 Location: Seffner, FL Posts: 6,226	Sorry, I've had a few Vacation days. Let me know the results

07-09-2016, 05:22 AM	#9
sun47me Drives: 2011 Camaro 2SS Join Date: Mar 2011 Location: Dewitt Posts: 5	So I had the time to grease it Friday. I pumped grease with the vehicle wheel on the ground as BMR recommended. I pumped greased until I saw grease oozing on the sides, and I give it a couple more pums. When I removed the greaser, grease was oozing out of the zerk fitting. Wipe off the extra grease and took the car for a test drive. The noise was still there but now it has a higher frequency. Before it sound like a popping noise, now it sound like metal to metal. Everything looks tight. My paint marks on the head bolts and nut when I installed the trailing arms are still aligned. Any other suggestions? Thanks in advance.

07-09-2016, 07:20 AM	#10
hesster Drives: '10 C5 SS, '77 Bandit T/A Join Date: Dec 2015 Location: Michigan Posts: 639 View My Garage	Was anything other than the RTA bolts/arm loosened up during installation? Did you replace the Knuckle bushing with the Knuckle still installed in the vehicle? I imagine this is a challenge and required a press tool as I used. So - IF you are sure it is the RTA causing the issue, unbolt one end at a time, articulate it fully to check for free movement and no binding, and inspect the sleeves in the bushings for grease etc.

07-09-2016, 08:14 AM	#11
flyer08 Account Suspended Drives: 2010 2SS/RS Join Date: Jun 2009 Location: Texas Posts: 3,418	Had a similar issue and it was a couple of bolts weren't torq'd properly and were really loose.

07-11-2016, 04:31 PM	#14
JusticePete Drives: Camaro Justice Join Date: Jun 2007 Location: Virginia Posts: 20,174	Unless you used all new GM bolts and fasteners, the torque values are going to be off. Almost every suspension nut is quenched and single use. Installing once and removing in once reduced the quench. Most people reuse these fasteners. In that case they need to be mechanic tight and installed with LocTite. Road debris, corrosion and rust alter TQ values. Damaged threads alter torque values. Following factory procedures and torque specs is never a bad plan. However, factory specs are set for everything in new condition under ideal assembly conditions. Just something to keep in mind.