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GMC Yukon Noises and Sounds

76 messages,  Last post on Nov 10, 2009 at 6:09 PM

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What is this discussion about? GMC Yukon, GMC Yukon Denali, GMC Yukon XL, SUV

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#14 of 76 Re: Engine noise Heard inside and outside 04 YUKON [gmclover] by rymr2000 Feb 04, 2007 (12:35 pm)
Replying to: gmclover (Dec 12, 2006 10:21 pm) I don't know about a helicopter noise, but if it sounds like a prop airplane trying to take off when you raise the rpm of your vehicle when the temp is nice and hot than, believe it or not, this is normal. Your motor has a cooling fan that is attached to a fan clutch that is thermistaticly controlled. When your motor/radiator get to a certain temp then it will engage and cause your fan to turn close to the same rpm as the motor. When it cools down the clutch disengages and the fan turns at a fraction of the speed of the motor. If you want to test if this is the noise, than let your engine get nice and warm to were you hear that noise than bring your rpm up to about 2500 rpm (in park) and hold it. depending on the outside temp the noise should go away as the radiator gets cooled off and the fan clutch releases. A way to speed up the process is to "mist" some water in front of the radiator and it will do a swamp cooler affect and cause the fan to disengage faster.   As far as your rough idle after your injector flush, I would run a tank of good quality gas though it and than see how it runs. They may have put in a tank additive. if you still have a rough idle, than take it back.   Hope this helps, and that your husband makes it back soon!
#15 of 76 Re: Engine noise Heard inside and outside 04 YUKON [gmclover] by rsht Feb 10, 2007 (2:48 pm)
Replying to: gmclover (Dec 12, 2006 10:21 pm) gmclover, hopefully by now your 04 Yukon is all fixed and running normally... If so, can you share what were the problems and the fixes?   Anyhow, it is possible that during the process of removing and installing a fuel injector, so dirt may gotten in to the fuel rail or one of the injectors and caused the rough idle... assuming each injector was properly cleaned. Just a side note, if I'd to clean the fuel injectors I would also replace the fuel filter too(unless the filter in built in with the fuel pump inside the fuel tank, then forget about it).   I had a (small) cracked exhaust manifold once, I am not sure if I would describe the noise as a landed helicopter (sounded a bit flat, in my case it sounded more matel-ish, higher pitch); anyway, there was certainly loud Ticking sound when the engine was hot, shifter in Park or at low RPM with no load to the engine... Are you able to tell if the noise is coming from which area of the engine (e.g. top center close to the Intake Manifold, Right/Left front/rear close the valve cover, or front center close to the fan belts, and etc...)?
#16 of 76 The noise is still here....haven't went that EXTRA step yet by gmclover Feb 11, 2007 (12:37 am)
A guy at the dealership who listened himself told me that its not a normal noise, but it seems to do it when it gets hot and obvioiusly pressure may be involved, the longer the engine is on and geting hotter, the more pressure its building...but he wasn't the service guy, just a guy who has a suburban..He told me where to take it, I just have a lot on my plate right now and I'm trying to get there..lol I will keep ya'all posted! Thanks for the replies Replies to this message: rtaylor2 (Mar 09, 2007 1:28 pm) gmclover (Mar 09, 2007 10:03 pm)
#17 of 76 Re: The noise is still here....haven't went that EXTRA step yet [gmclover] by rtaylor2 Mar 09, 2007 (12:28 pm)
Replying to: gmclover (Feb 11, 2007 1:37 am) Have you found your problem yet? I have an 04 GMC and just recently had to change the belts and when we changed the belts the tension pulley started making this tapping noise big time and I am on my second tensioner pulley and for some rreason this makes a loud clicking noise mine is the one locatyed at the bottom and runs the smog pump and I was wondering if you figured your problem out yet. Replies to this message: gmclover (Mar 09, 2007 10:03 pm)
#18 of 76 Fan belt tensioner by rtaylor2 Mar 09, 2007 (12:32 pm)
Have a fan belt tensioner on a GMC 04 and when replaced it started to chatter, it eliminated the bearing sqeel but now I have a loud chatter noise and it stops when the rpms are increased. any ideas out there!
#20 of 76 Re: The noise is still here....haven't went that EXTRA step yet [rtaylor2] by gmclover Mar 09, 2007 (9:03 pm)
Replying to: rtaylor2 (Mar 09, 2007 1:28 pm) I need to take it in still, just not ready to have another person tell me, well if your check engine lights not on..don't worry? (grr)I have somewhere I am going to take it, I was actually given the name of another mechanic, here where I live...My yukon still smells like new...but has this issue? go figure! My noise seems to be (on the left hand side when looking under the hood) somewhere middle to the bottom, just hard to tell. I will repost when I get it figured out (hopefully).
#21 of 76 '08 Denali Engine Noise by ppc1 Nov 29, 2007 (3:01 pm)
I brought home my '08 Denali and the engine/exhaust noise is a loud rumble any time I turn on the car or touch the gas. The dealer said it is normal for the Denali engine but I don't remember this when I test drove. Any ideas or anyone with the same problem?
#22 of 76 Re: What's the noise I hear when I open the door? [10mikeymike] by mikestgerm Dec 08, 2007 (1:59 pm)
Replying to: 10mikeymike (Jul 25, 2007 3:46 pm) I hear the same noise in my '07 Denali. I just completed my 5,000 mile service, and asked the dealer to check out the whirring sound (which, at times, is not so faint). They said that it was a normal radio or cd/dvd start up sound. I am not convinced of that, but had to get back to work, and didn't have time to argue. I will go back to the dealer when I am in the area, as it is annoying.
#23 of 76 03 Denali rattle in headliner by tpwallac Dec 11, 2007 (6:37 pm)
Hello. I am hearing an annoying rattle right above driver's head anytime I hit a bump in my 03 Denali. I think something is loose where the speaker looking grate is in the headliner. If I apply pressure to the grate, it seems to go away. The dealer said they would have to take apart the entire headliner to tell what it was, and this would risk causing even more annoying rattles. Any ideas of an easier fix? I'm tempted to pry the grate off and see if I can put padding in through there, but I don't want to cause more damage. Any thoughts? Anyone else had this same problem? Replies to this message: jpf1603 (Dec 20, 2007 6:37 am) antifreeeez (Aug 24, 2009 5:06 pm) flyper (Apr 01, 2008 11:42 am)

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