I read on another site about rearend whine and bolts falling out of it. Has anyone here had any problems??
Hideaway said:My GTO has that rearend whine problem. My dealer is in the process of replacing my differential. The problem first became noticeable at about 1600 miles, and got proggressively worse during the course of a 1000 miles.
I'll make this thread more active/current . I'm hearing the whine from 45-60 when pressing accelerator and no whine when coming off gas. Will visit Dealership with complaint and see what I can add...Hideaway said:My GTO has that rearend whine problem. My dealer is in the process of replacing my differential. The problem first became noticeable at about 1600 miles, and got proggressively worse during the course of a 1000 miles.
Uh-oh. Mine does that. Is it like a whirring noise from the back that you can hear if the radio is down but not if you had it up? Also, I am getting this loud clunking noise from back there when shifting. It clunks the loudest when I am going into 6th gear at like 45-50. If I put the clutch in, nothing, but when I let it out *Clunk*. It will do it over and over again every time I let the clutch out. Its loud too, I heard it over the radio, louder than the whirring noise.Xcommuter said:The Service Manager heard the sound and Ordered a Complete Rear Axle Assembly . He said that Pontiac/Dana are still trying to determine the origin of these noisy pinions. The idea was to get a complete rear axle assembly to be sure the problem is fixed. Bad news is new Rear Axle Assembly needed @ 2000 miles , Good news is the dealership didn't play games and knew of this problem hitting some percentage of GTO's , also under warranty (think it's 3-4 large). They say +- 2 weeks for parts and then I'll take it back in . The noise is a whining noise at 45-50 mph when giving gas , noise quits when come off gas. No Whining Noise at other speeds.
To Be continued...
Took mine in over 2 weeks ago for 45 - 55MPH whine. They've order a whole new rear and hope to have one in within another week or 2. It takes quite awhile. They are well aware of this problem and will just replace it.Pennsylvania Goat said:My GTO thunks and clunks...but whats worrying me is the whirring sound I hear @ 40-55mph from the rear. Not screaming, but its there. My car only has 550 miles on it. Great. Needless to say I'll be calling the dealership up this week. Not cool. :willy:
Same thing I noticed..... Let off the gas and it goes away. Apply gas and it whines.... But is this a cause for concern?Xcommuter said:The whine I am waiting for a new rearend for is : Comes from behind rear passenger seats at 45to55+- with gas applied , come off gas the whine goes away , press gas again and the whine is there. Sounds like a failing fuel pump from other vehicles experience... The whine is not present at other speeds in the on/off gas test. But others say the whine eventually is audible at speeds other than this 45-55 range...
My Service manager drove it - heard it and ordered the parts , no discussion...
This time of year I always have the A/C on in FL...
I've noticed that certain types of tire noise really transfer through the chassis and into the car. For the most part, the GTO is amazingly quiet -- but under certain conditions you'll get a noticeable harmonic buzz. Better than a noticeable harmonica buzz -- but it's still there.Cottonfarmer said:I am leaning toward tire noise on different pavement surface textures.
Concern ?? , Can you live with this whine for the life of your GTO ? I don't consider this normal so I complain to dealer and they order parts . They must also think it can be corrected. GTODEALER says he removed whine by replacingGTO judge said:Same thing I noticed..... Let off the gas and it goes away. Apply gas and it whines.... But is this a cause for concern?
The noise is not constant. On some roadways I get no noise. I do not notice the noise however when the A/C is not on. The whine is not deep nor is it a high pitched noise... I have heard the same sound on other cars I have owned in the past. I am going to give this one though a thorough evaluation.Xcommuter said:Concern ?? , Can you live with this whine for the life of your GTO ? I don't consider this normal so I complain to dealer and they order parts . They must also think it can be corrected. GTODEALER says he removed whine by replacing
rearend fluid with syn. fluid , which I might haved tryed if it were out of warranty - I took it to the dealer. I continue to drive my GTO while waiting for parts to arrive...
I took her out for a run to concentrate on the whinnying. It will whine as soon as I hit 50 mph. The whine does come from the rear. With the windows down I cannot hear it, it's that faint. Of course there is air flow noise, but the sound is not noticeable. When I put the window up I can hear it. It comes and goes with the depressing of the gas pedal. It does it on concrete roadways, as well as asphalt. It does it with or without the air on. It is a slight whinnying. Not a deep, or even high pitched whine. It does it at 50 mph but when I get to like 55 or higher I can barely detect it. I am going to suggest to my service rep to change out the rear gear oil and replace with synthetic before I have them tear out the rear. It's just not that loud that I am concerned about it. But if it is an issue in the future I ought to get it done. That's why I ask if this is an issue that I should be concerned about, and if it will harm anything if left alone.Xcommuter said:Some of us have this whine from the rearend others have the clunk in the trunk , your a/c noise is a new one for me. Atleast these noises/whines don't put us into reduced power mode like the bad pedal sensor does...
That's the whine I took in to complain about... Tough call on the future of thisGTO judge said:I am going to suggest to my service rep to change out the rear gear oil and replace with synthetic before I have them tear out the rear. It's just not that loud that I am concerned about it. But if it is an issue in the future I ought to get it done. That's why I ask if this is an issue that I should be concerned about, and if it will harm anything if left alone.
I have her going into the shop tomorrow. They are attempting to eliminate a high pitched noise coming from the A/C which comes and goes. They are replacing the blower motor in the dash hoping this will correct the problem. I'm gonna have them check out the differential as well, I'll keep ya posted.Xcommuter said:That's the whine I took in to complain about... Tough call on the future of this
problem if left alone , don't think anyone has lots of miles yet - maybe Goucho.
Hopefully the diff. fluid change will solve your noise. But if Dana is concerned and Pontiac is willing to eat the cost of a New Rearend - something is going on .
Maybe it's build date relative to a batch of parts ? As drastic as a NEW rearend is , the Dealer made the call and I'll take all fixes necessary during the warranty
period. My idea is to find and fix all problems during the warranty period and after that the decision process will change somewhat as I extreme commute...
Maybe your dealer will change the fluid and put you on the list to cover the delay factor in case it get's worse. Let us know how your dealer responds to the service call...