titoerick

02 TB. with rattle noise from underneath when driving. Out of Warranty.
sounds like something is loose. taken to several dealers, and was told it was normal. noise has been present for over a year. really driving me crazy.

Mr. Northface

The same old Bullcocka story from the dealerships......"they all do that"
well, maybe they shouldn't! Don't think that they ever thought of that huh? But for enough $$$ they'll eventually find the problem eh?!

I think that there was other posts about rattling noises from the front or the underside. You might find something of interest there. They weren't posted to long ago.......

__________________
2003 TrailBlazer EXT 4X4 NorthFace Edition. Silver Green over Pewter
Every option minus the DVD 4 a MoonRoof.
5.3 V8 3.73 Locking Rear.
Performance:
TrueFlow Air Intake
Granatelli Mass Flow Air Sensor
FlowMaster 70 Series SUV Muffler
Predator Power Programmer
Airaid Throttle Body Spacer
Misc.:
Super White headlights 80W & 100W
Fog Lamp bulbs
Billet Grill
XM
Tekonsha Prodigy Brake Box
Valentine 1 Radar
Line Of Fire 49" L.E.D Brake Light

sporttezz

Check the prop rod that holds up the hood. I had a rattle at certain rpm's and tried everything I could to get rid of it. Turned out the prop rod was rattling up against the plastic shroud that covers the fan. I slid a gas hose over the prop rod and cable tied it tight. Rattle GONE ever since.

balboasdelight

Heh. Gotta love those high-tech solutions!