Onstar Speaker???

[joshw1303]

First off,If your truck does not have On-Star you cannot add it,It must be factory installed.

Secondly,The speaker your talking about is actually called an "Aspirator".It is for the automatic climate control,Heres a bulletin on it......

 

 

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.

 

Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

 

 

 

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

 

 

© Copyright General Motors Corporation. All Rights Reserved.

 

Document ID# 1639237

 

Actually you can now buy Onstar from Best Buy as a kit.

 

http://www.trucktrend.com/features/news/20..._buy/index.html

[jediscuba]

If you're willing to remove the plastic grill cap and make the hole a little larger, you can then pull the bugger right through the hole. Of course, to cover it back up, you need a slightly larger cap. I had a small speaker grill that screwed right over the opening. On an 11 year old truck, some mods are acceptable.

[dsr611]

First off,If your truck does not have On-Star you cannot add it,It must be factory installed.

Secondly,The speaker your talking about is actually called an "Aspirator".It is for the automatic climate control,Heres a bulletin on it......

 

 

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.

 

Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

 

 

 

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

 

 

© Copyright General Motors Corporation. All Rights Reserved.

 

Document ID# 1639237

 

Actually you can now buy Onstar from Best Buy as a kit.

 

http://www.trucktrend.com/features/news/20..._buy/index.html

 

 

Correct...you can buy the aftermarket OnStar now, but the post you quoted was made in July 2006, over 5 years ago. There was no aftermarket Onstar in 2006.

[jrrod2004]

Can someone that's removed it, chime in? I was able to get two of the prongs on the plastic grill cover off, with one to go. It kinda looks like the fan will be free floating inside the headliner when the cover is off. Do I have to pull down that side of the headliner to access the aspirator or is there an easier way to do it? Does it have to replaced or is there something than can be done to get some more life out of it? Thanks much.

 

Yeah...mine was buzzing pretty bad, and my climate control wasn't performing properly, so I decided to replace the aspirator. I pulled the cover off without much effort, and then (of course) discovered that it left the aspirator free-floating above the headliner. I had to remove the driver's side visor and loosen the A- and B-pillar trim pieces before I could get my '03 crew cab headliner down JUST far enough to reach it. I replaced it with a new part and snapped it together with the original cover easily. That resolved my HVAC issues, although I occasionally still hear a faint buzz from the aspirator.

 

 

 

 

 

 

Hey, what is the trick to removing the A- and B-pillar trim pieces? I don't really want to break them to figure out what holds them in.

 

 

 

It is best to have trim panel puller tools but you can pull on the panel since they are heavy duty clips. use a flashlight to find each clip and then pull near that clip to avoid bending/breaking the panel

[Babyhauler]

Wow, An old post, but it had the answer for the buzzing sound above my head in my recently acquired 2002 2500 Crew Cab.

Search and ye shall find... sometimes... if you enter the right keyword and have time to read post that are titled HELP! Which should be immediately removed.

I'm buzzing off to work now.