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Loud vibration noise underneath while idle!!?? [Archive] - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum

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Got5onIt
12-26-2006, 11:18 AM
When I start the SS up in the morning, I can hear a very loud vibration coming from underneath the truck. It almost sounds like something is "tapping" at a very high rate. I've tried putting it in different gears thinking it was the tranny and nothing seems to set this noise off. It's almost if the fuel pump is vibrating or just very loud. Any ideas?? :confused:

VTODD
12-26-2006, 02:09 PM
air compressor?

Blulytes
12-26-2006, 04:03 PM
I agree,
Probably the air ride compressor... kicks on at startup until level...

2002SLT
12-26-2006, 07:00 PM
It's the air compressor and should turn off within 30 seconds. If it doesn't, take it in for service.

Got5onIt
12-26-2006, 11:17 PM
You know what, that's exactly what it sounds like, an air compressor.
The SS has an air ride compressor? What in the world does it do? Level teh truck during hard cornering?
:o

CARBONGSXR
12-26-2006, 11:19 PM
You know what, that's exactly what it sounds like, an air compressor.
The SS has an air ride compressor? What in the world does it do? Level teh truck during hard cornering?
:o

just levels the rear out.. start your truck and jump in the back seat, leave your door open you should here it right away..hope this helps.:yes:

FDZ-Denali
12-27-2006, 12:02 AM
My Envoy Denali has one of those. Start getting used to the noise.. I already did :crazy: