Squeaking from the back

**Nixon** · 03-20-2013, 04:35 PM

I have had a squeaking sound coming from the back of car once last year. I pulled my car out from storage last weekend and noticed it was still there. I located it coming from underneath the area between the back seats and the hatch. It squeaks when I drive 70mph or faster and when I accelerate quickly. Has anybody ever experienced this and/or having any suggestions on what I could check? It really sucks driving around with it squeaking. Any help would be appreciated.

**Too Fast** · 03-20-2013, 04:39 PM

Inside the car or outside? I had a bad squeak that turned out to be the latches on the fold down seat. It needed a little grease, problem solved.

U-joints can also squeak, more loudly under acceleration especially from a stop.

**pajeff02** · 03-21-2013, 02:31 AM

The hatch seal can also be a noise maker. There is a seal conditioner made by GM, or you can apply spray silicone, and see what happens. I generally apply spray silicone to the rubber seals on all our cars twice per year.

**ls1camino** · 03-21-2013, 04:09 AM

Check the hatch struts...mine squeaked till I put some grease on the pivots.

**The Machinist** · 03-21-2013, 07:36 AM

I had this problem until I applied Napa Sil-Glyde to the hatch seal. It worked well. It also worked on my squeaky t top seals

**Nixon** · 03-21-2013, 08:25 AM

Thanks for the feed back. Well I don't think it is the hatch, although I think I will grease them anyway like many suggested. I took the car on the freeway while my cousin drove a squeezed my head into the hatch area. I pin pointed the noise to be coming from under the car in the center around the axel area. I lowered my car, but didn't put in an adj Torque arm. Think that has anything to do with it?

**ls1camino** · 03-21-2013, 08:44 AM

I'd attribute the panhard bar before the torque arm if you just lowered it.

**Nixon** · 03-21-2013, 10:00 AM

Originally Posted by ls1camino

I'd attribute the panhard bar before the torque arm if you just lowered it.

I have a new UMI adj PHB on there now. What do you think it is doing that would make it squeak? What remedy should I try?

**pajeff02** · 03-21-2013, 10:38 AM

The high speed presence has me puzzled. Air buffeting the hatch seems to make more sense than a suspension component.

**Nixon** · 03-21-2013, 10:49 AM

Originally Posted by pajeff02

The high speed presence has me puzzled. Air buffeting the hatch seems to make more sense than a suspension component.

The sound is definately coming from underneath the car. It isn't off and on either. It is every time I go over eighty. I am trying to find out where to start looking for a fix.

**35th-ANV-SS** · 03-21-2013, 02:33 PM

Are you sure it isn't the exhaust rubbing?

**Nixon** · 03-21-2013, 04:05 PM

Originally Posted by 35th-ANV-SS

Are you sure it isn't the exhaust rubbing?

I never checked. That might be it. When I accelerate the exhaust woul come down and when I am at higher speeds it would be closer too. That should have been my first guess. Thanks, ill let you know what I find. I have a LM2 over the axel back. So the exhaust has been enlarged.

**35th-ANV-SS** · 03-21-2013, 04:17 PM

Then my guess is it is rubbing. I had the same exact issue. Right where it goes over the axle. You'll see a shiny spot on the exhaust where the metal to metal contact is.

**bhunter0830** · 04-01-2013, 03:42 PM

Same problem here. It sounds like you have added some mods and lowered it. I too did the same things. Once I installed everything I realized I did not grease the points on the PHB, LCA's etc... once I greased the points and made sure everything was snug after some driving the highly annoying squeak went away. I also have the LM2 exhaust, but no clearance issues in the back. Just my thoughts and worth a try.

**Nixon** · 04-02-2013, 07:34 PM

Yeah I did that last year. I was thinking the new parts werent lubed well. I should do it again soon. I can't remember if it went away after I greased it last year. I have t had a chance to check if my exhaust is rubbing yet. I will this weekend, now that the weather is getting better.