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#1
07-01-2004, 05:32 PM
Join Date: Jul 2004
Location: Northern Virginia
Posts: 6
Happens when first starting in drive with AC on, and only when accelerating... Any ideas?
#2
07-01-2004, 05:32 PM
Join Date: Jul 2004
Location: Northern Virginia
Posts: 6
Happens when first starting in drive with AC on, and only when accelerating... Any ideas?
#3
07-01-2004, 05:32 PM
Join Date: Jul 2004
Location: Northern Virginia
Posts: 6
Happens when first starting in drive with AC on, and only when accelerating... Any ideas?
#5
07-01-2004, 05:59 PM
Join Date: Jul 2004
Location: Northern Virginia
Posts: 6
Don't know if that would help you understand the problem any better =) However, to clarify a little better... When I start the engine with the AC on, put the vehicle in drive let off the brake and press the gas pedal, there is a metalic flapping noise that comes from somewhere under the engine. It stops when I let off the gas, or as the engine shifts into 2nd, and then about 1/2 way thorugh 2nd, it starts again, and the flapping noise gets faster... and it usually happens mostly when the engine is cold.
#6
07-01-2004, 06:15 PM
Hummer Messiah
Join Date: Apr 2003
Location: Virginia Beach
Posts: 37,474
Welcome Chick. No idea here either, and my suggestion was taken.
I'd hate to think it was your a/c compressor so soon. 
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#7
07-01-2004, 06:27 PM
Join Date: Jul 2004
Location: Northern Virginia
Posts: 6
I hope it's not the AC compressor, since it only makes the noise as I accelerate, and only sporadically, (hope I spelled that right
) It sounds like a plastic grocery bag on someone's bumper would sound like, only more like a tin or aluminum material. And kinda like a card in the spokes of a 5 yr old's bicycle wheel 
#9
07-01-2004, 06:59 PM
Join Date: Jul 2004
Location: Northern Virginia
Posts: 6
Yes, it is a 2003, and it was just there 2 weeks ago for the noise, that they couldn't figure out. They thought is was the heat shield, and "tightened" it and the muffler... Didn't fix it, and I will be making another appt with them for another "look-see".
#11
07-01-2004, 07:29 PM
Hummer Guru
Join Date: Nov 2002
Location: CSA
Posts: 2,511
Could be this:
http://elcova.com/groupee/forums?a=tpc&s=2826088551&f=6706011751&m=761608666 3&r=7616086663#7616086663
#12
07-01-2004, 07:57 PM
Banned
Join Date: Jan 2003
Posts: 24,247
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Klaus:
Could be this:
http://elcova.com/groupee/forums?a=tpc&s=2826088551&f=6706011751&m=761608666 3&r=7616086663#7616086663 <HR></BLOCKQUOTE>Sounds like the culprit to me. Print the TSB and take it with you to your service appointment and tell them to check according to it.
#13
07-01-2004, 08:40 PM
Hummer Veteran
Join Date: Feb 2004
Location: Ridgeland, Mississippi
Posts: 29
Klaus' service bulletin reminded me of another possible cause. A friend with an '03 model exhibited a similar flapping noise to me last winter. We thought the bearings had failed in the a/c fan motor. Turns out a blade or two of pine straw had somehow or other gotten into the vents on the cowl and all the way to the a/c fan. As the fan blades hit the pine straw, you could hear a loud clicking or flapping sound. Check for that too if you think the noise is coming from the a/c fan.
#14
07-02-2004, 01:41 AM
Hummer Professional
Join Date: Mar 2004
Location: Arizona
Posts: 324
What about a fan belt comming apart. Air intake shroud loose. sorry spelling.
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