Dash Noise

**glp08** · 02-27-2009, 12:18 PM

I have a 2008 Silverado Ext Cab with a 5.3L. When I'm going down the rode at a steady pace between 30 and about 50 mph I get a sound coming from the dash. It sounds like a vibration or rattle. Almost like its a very small ball bearing shaking around in a very small area. Does anyone else get this or know what it is. I'm also wondering if it is a switch or something to tell the convertor to lock up. Driving me nuts

**RVJ** · 02-27-2009, 07:34 PM

Try removing the black plastic engine cover, (it snaps into rubber grommets) then go for a ride and see if it's gone. My 08 Sierra did the same thing and it was a wiring loom rattling on the engine cover. I used wire ties to secure everything and the rattle has been gone ever since.

**GreenZ71** · 03-15-2010, 11:48 PM

I get a rattle in my 99 Seirra that seems to be right in the middle of my dash. Sounds about the same what you have. I will try the same suggestion though.

**canislupis69** · 03-16-2010, 12:38 PM

I have the same exact noise from the dash of my 08 1500 4x4. I took it to the dealer a while back and of course it would not reproduce the noise while it was there. I am going to try taking off the engine cover also.

**lsutoms** · 03-16-2010, 12:50 PM

i seem to have this noise that ya'll are talking about in my 09 ext cab... except mine comes more often on my drivers side column it sounds like.... i cant figure out what it is....

**Greg84** · 03-16-2010, 01:45 PM

The trim around the windshield can make a rattling noise, its really noticeable if you have a bug shield on the truck. A little silicone adhesive under the rubber molding on the sides of the windshield will stop it if thats whats causing it.

**mkruluts** · 03-16-2010, 02:58 PM

My truck has a knock sound that seems to come from the dash as well... It only happens in cold weather and I just assumed it was the tubes and hoses under the cold conditions...

**cobra2end** · 03-16-2010, 04:02 PM

A friend of mine has a 99 gmc and his had the plastic part in front of window that rattled going donw the road. Might be the same thing

**Loggerhead Mike** · 03-17-2010, 03:45 PM

its pretty common for the front dash trim (the long piece under the windshield w/ the sunload sensor) to rattle. pop it off and put tape around the retainers. you want a "bushing" between the panel and dash