Hi, I hear a buzzing noise under the driver's door ( I mean under the car) i located the fan type of thing connected to some woses, it sounds only when it starts and its cold, like in the mornings during the day it doesn't, it sounds like a freaking spaceship....any answers... thank u!

Hi there,

The sound you hear, is it a whining, popping, grinding, scraping or rattling sound?
If you drive a manual transmission vehicle and notice a grinding noise, it can indicate the clutch gear is no longer disengaging correctly.

runn a scanner take it to auto store for scan

The only thing I can think of is some type of relay to cause a buzzing sound.

need more info.what kind of noise or where does it sound like its coming from.

That "speaker looking thing" above the drivers head on the headliner is a part of the climate control system.

Here is the GM bulletin regarding it if you are running in to these issue:

Document ID# 1639237

Subject: Buzz Noise From Headliner Above Driver - keywords ac air aspirator cover fan grille HVAC interior microphone sensor speaker temperature vent vibration #PIT3511 - (03/29/2005)



Models: 2000-05 Cadillac Escalade

2002-05 Chevrolet Avalanche

2000-05 Chevrolet Silverado, Suburban, Tahoe

2000-05 GMC Sierra, Yukon, Yukon XL, Yukon Denali

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in the PI.

Condition/Concern:
Dealer or customer may comment that they have a buzz or vibration noise emanating from the headliner in an area that looks like microphone or a speaker.

Recommendation/Instructions:
The plastic escutcheon grill, which is round and about the size of a half dollar and located just above the driver to the left, is the interior ambient temperature sensor. The sensor is used in conjunction with the automatic HVAC (C68). On occasions, this sensor has been known to make a buzz or rattle sound. The sensor uses a small fan to pull air over the sensor. This buzz noise may be intermittent.

Although it may not be possible to alleviate all of the buzz or noise from this sensor, Engineering has found that if the sensor is installed incorrectly that it may bind and cause the fan to make a buzz noise. Remove the sensor and while doing so check for any binding. Reinstall the sensor and re-test. If the noise is still present, the sensor itself may be noisy and require replacement.

The description isn't clear but I will take a stab at it. It sounds like there are two things going on. First the key won't work, this could be caused by the key being worn out, or the door key cylinder or door latch is broken. Second, When the door is opened and you then start to hear that buzzing sound. You are hearing the (door open) chime.

sounds like the fuel pump which is actually in the gas tank but will sound like under the seat if it never made the sound before it might be getting worn out have it checked out

Re:- the buzzing behind the dash:-
Its tiny a fan which carries on running in humid conditions to circulate the air so you dont get blasted by warm air when you use your climate control.It circulates air across the humidity sensor. It keeps running for a while after you switch off, and starts again when you open a door. It does this so that there is less delay in getting the climate control to the right setting when you switch on (or restart).

Sounds like a motor, or a s stuck mechanism. Either way the door panel must come off and this is no easy task.