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09-11-2008, 03:02 AM
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Hummer Novice
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Join Date: Aug 2008
Posts: 16
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Re: Lots of noise on start up?
Cool, well I'll try to make a service appointment soon and get it in... glad my mileage looks right....
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09-11-2008, 01:56 PM
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Hummer Guru
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Join Date: Dec 2005
Location: In a FREE U.S.A. where Marxism, Socialism & Communism is not allowed !
Posts: 5,485
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Re: Lots of noise on start up?
My loudest noise is the brake grinding... guess i'm lucky...
using the gauge i feel good when i get 200 miles on the 1st half and another 100 miles on the second...don't understand why the gas gauges are not more accurate. 15 MPG is a good overall average for me. Highway only i get 19 to 20 mpg...
wherever possible i put on the cruise control and try and keep my highway speed under 65 mph
BTW...i use the A/C over 99% of the time
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History, be it in 1 Year, 10 Years, a Hundred Years or One Thousand, will show that those people who voted for John McCain in the United States Presidental Election of 2008 were true patriots...
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09-11-2008, 03:39 PM
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Hummer Guru
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Join Date: Sep 2005
Location: fort salonga ny
Posts: 3,789
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Re: Lots of noise on start up?
There was a thread some time ago about the tentioner pully making noise at start up ? I never had that problem  .
I have been living with the brake noise(normal says hummer rep  ) since 2005 GRRrrr.( a little brake lube at rotation is a temporary fix.)
My wife drives kinda hard 15 1/2 around town 14 1/2 in the winter using auto start. 75MPH on Hwy im getting about 18 on a trip a little more or less depending on speed.
Pulling a 4,000 camper about 12 1/2 to 13 MPG at 60/65 depending on hills.if I run 65 to 70 I wont get more then 12.
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H3 gray adventure,brushguard,hood handles,sunroof,steps,crossbows,smokers package,window/sunroof visor,Airbrushed spare tire cover,mudflaps,K&N filter,SS Hummer insert,Hummer rubber mats,cargo rubber mat + shade,12 volt airhorn,eclipse nav/dvd/rear camera/mini remote,autostart,12 volt fridge,high beam garage remote,underhood air compressor, taillight bezels ,clinometer ,trailer brake and hitch.
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09-27-2008, 11:55 PM
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Hummer Professional
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Join Date: Aug 2005
Location: Monroe MI
Posts: 278
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Re: Lots of noise on start up?
I too have this noise however I've noticed that it's usually only when it's cold outside. If I let it warm up before driving it usually goes right away.
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If the broom fits, fly it!
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09-28-2008, 12:56 PM
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Hummer Authority
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Join Date: Jun 2005
Location: Key Largo
Posts: 1,174
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Re: Lots of noise on start up?
I had the same noise, especially on cold start ups and solved it by spraying WD40 in the shaft of the engine belt tensioner pulley. The noise would come back after about 10 days and I would spray it again. Hummer replaced the tenison pulley under warranty and it never made any noises again. There's a thread about this the first winter the H3 came out, I think by F5stop, and it boiled down to a handful of H3s had noises from the tensioner pulley.
Last edited by HummerJim : 09-28-2008 at 01:01 PM.
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09-29-2008, 02:35 AM
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Hummer Novice
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Join Date: Aug 2008
Posts: 16
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Re: Lots of noise on start up?
I took it in, and it of course didn't repeat said noise.. took it on a road trip this weekend, and while in Lubbock, darn thing made noise the whole time we were driving around the town... and stayed on for first 35 miles after leaving town to head back home.
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09-29-2008, 05:27 AM
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Hummer Expert
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Join Date: Apr 2006
Location: cary nc
Posts: 765
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Re: Lots of noise on start up?
if I'm not mistaken it's a extra clutch that kicks into your cooling fan on start up and when your engine is running hot. Yes?
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