Has anyone experienced a whining noise in the rear axles on the C5? I've got a '98 Coupe, automatic w/2:73 rear end. I changed tires recently from the GY F1 Runflats to Kumho 712s. The road noise experienced with the runflats has gone away and on some surfaces there is absolute silence except for the sound of my modified exhaust and that annoying whirring sound coming from what I believe to be the rear axles. Since I'm in the driver's seat the noise is most apparent on the passenger side. Anyone else had this experience? IS there a problem? Solution?

Problem#2.....grrrrrrrrr!
I was going on a trip to Boise from Portland and decided to "top off" my fuel before leaving. I can usually make that trip with one tank of gas. About 25 miles into my drive I noticed the "Check Gauges" indicator was on and looked at the fuel gauge...it read EMPTY!! Once I stopped at a rest area shut off and restarted the car, the gauge went back to it's proper setting. Shortly thereafter....plunk....EMPTY AGAIN!!
Now I called the Chevy dealer and they said that GM acknowledged that there is a problem that existed and a tech bulletin was released about it. But in no case has there been a recall!!! 1997 thru 1999 were built with questionable sending units that are subject to failure at around 35-36K miles!! Interesting....just as the warranty expires, so does the sending unit! Well I was also informed that since I was over 36K miles and past 3 years it would not be a warranty service repair...roughly $375 for the part and $180 labor for installation!!
When I'm driving around the city and fill the tank I don't seem to have the problem. Any clues if it might be something else going wrong!? Anyone had this problem and if so, did you get GM to fix it as a defect?

Here's wavin at ya!
:seeya

KoolKat Enterprises

 

Your rear wheel bearing(s) may be going bad. Looks like this is a common problem
with the C5s. I've just encountered and solved this problem.

Search the forum for 'bearing failure' and click on the first link.

There's several good discussions within this thread. If you deduce that it is
a bad bearing, go to my new site: http://www.c5corvette-diy.com and I've got
a bearing replacement procedure that you can use, complete w/ tool list, etc.

-Jason

:flag

 

The sending units are a PITA! Your noise could be several things; 1. Your diff needs a fluid change and some limited slip additive; 2. You are hearing the fuel pump for the first time, because you interior noise level has gone done now. Not much you can do for that, unless you want to lay out more big bucks; 3. You have a bad wheel bearing(s); 4. Gears are bad...... :(


[Modified by carpe dm, 4:07 PM 10/29/2002]