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As for the exhaust ringing, others have reported defective mufflers (a loose internal baffle, I believe). This too should be covered under warranty, but you might need to be a little bit assertive (trying to remain nice for better results) to get them to fix it. Still, unless you have a poor-service dealer, they should come through for you. Seems like they could handle both in one visit....
I have an 04 Denali with only 6k miles. The problem is when i put on my left turn signal the "Hazard Lights" come on. This happens at lest every 1 in 5 attempts. This only happens with the left turn signal. The dealer replaced a "Multifunction Switch", but the problem still occurs now every 1 in 4 attempts. It is presently at the dealers today. Has anyone else exprerienced this and if so what cause of action was taken. Please help will be a father for the 2nd time any day now and this was suppose to be our family vechicle!!
Experienced the same Left Turn Signal controling the hazard lights. Took it into the dealer 3 times. The first time it only did it 1 of every 4 times, but I also think weather may have had something to do with it. Or maybe how the Sun, Earth and Moon were alligned at the time. Seemed like the wet weather made the problem worse.
The dealer of course couldn't replicate it so I walked out of there looking like an idiot.
About 3 weeks later it started happening every time. In addition the driver's seat controls went crazy. The memory positions stopped working, the seat lost range, and the controls were the exact opposit. Meaning pull the lever back the seat should move back. It moved forward. Pull it up and the seat goes down. etc...
The dealer had it in the shop for 2 days searching for the problem. (At 39000 miles) Finally found some control switch that went bad.
About 3000 miles later the problem reappeared.
I was fed up and traded it in for a new 05.
I took the dash face off (it snaps off easily) and modified it by applying several small dots of silicone sealant, no different than tub and tile sealant. When you see the back side of the dash, you will notice where the factory had applied very small streams of silicone in certain areas, probably in an effort to do what I'm describing.
Allow the silicone to dry, and for good measure, spray the areas with silicone lubricant too. Also with silicone lubricant, spray the spring clips that hold the dash in place, and the open dash where the spring clips mount (the holes).
I've never heard a sound from the dash after this procedure.
For the record, I too had a muffler replaced (under warranty) at 27,000 miles. This was due to the classic rattle sound. That was the only repair this vehicle has had.
I love my Denali, and it rides like a dream, compared to the Tahoe LT that preceded it.
I have a very good dealer too. After reading the other messages, I think many of the issues relate to poor service from a dealer. However, as you can see from my reply, I take a pro-active role in my car's needs. Most people may not be willing to take the dash face off and de-squeak the thing. But I assure that it was easy, it took no more than the time for the silicone to dry, and it will stop the squeaking cold.
I read in MotorWatch that with the full size GM trucks, "moisture trapped between the inner and outer layers of the muffler causes steam and makes a loud popping/cracking noise".
So my question to those owners who have/had this same problem - do you notice the noise to be constant or just when its wet outside? Since I've only starting hearing it on my truck this winter, I'm curious if the noise will stop when the weather dries up & gets warmer or even if drilling a small hole will help the moisture escape.
Thanks in advance for any feeback!
Does anyone have any advise on the value of purchasing the extended warrant for this vehicle.
I had a similar problem with the Stabilitrak on my 2003 Denali. I took it to the Dealer they reprogram it per a TSB and I have never had another problem with the Stabilitrak System. Unfortunately, I do not have the TSB number to pass along.
Additionally, it sounds like you have a poor Dealer versus a bad vehicle. Save all your documentation and try another Dealer. I found changing Service Dealers worked for me.
The 2002 I sold had 2 compartments with a Writing area. The New 2005 does NOT have the Writing area - and only one DEEP storage Section.
Thanks
Mr. Bill
The Corsa system that was posted on the Yukon/Denali forum really got my attention. I'll probably look into it when the stock exhaust finally goes.
What I find interesting is that the popping sound does not happen all that often with my truck. The way some other owners complained on the Yukon forum and the Tahoe forum, I thought the popping would be more constant. I guess time will tell if the sound on mine will get any worse or not.
My 2001 denali has been in the service dept. over 6 times in the past 2 months. We had a hard start problem when hot.. that took 3 times for them to finally put a new fuel pump in.. and tons of bitching.
Now this hard ride is driving me crazy.. they say I have bad tires. So I go out and
buy 4 new michillin cross terrain's at about 800$ Now it rides just slightlly better.
and pulls to the right a little. had it aligned 3x allready. went through the whole tire pressure game..jeese it only has 50,000 on it. When I hit a reflector in the road i can feel it forget about a bump in the road.. you'll spill your drink..I went and drove a new 2005 XL and wow.. what a nice ride.. worlds different from what i have.
Anyone know what I should do about this. I just cant go and buy a new one.
Thanks!
Robert.
I have about 30 PSI in mine. Still stiff as a board. How does yours ride ?
Thanks,
Robert
I run 32 PSI. I do have 4 new shocks. It is not a good idea to replace the left shock without replacing the right shock. Fortunately, I had a problem with each shock so they were all covered.
Robert
But yes, you are correct in describing the integration of Stabilitrak and ABS in helping to detect and correct wheel slippage...I guess you could call it a "software" solution of a limited slip diff, versus a "hardware" solution...LOL!
I have a 2004 Yukon XL and I am having the pinging noise you mentioned after shutting off the truck. I am in the preliminary stage of being heard by GMC. I would like to keep in touch to be a unified force against this giant. After reading the post in the forum I think we might be in for a battle. I spoke with GMC (very nice, so far) and they connected me to my local dealership. From what I have heard GMC is so aware of this and are willing to do some things to "fix" the problem, but apparently there is no sure fix. I am so disappointed! I would think when you spend 10's- of- thousands of $ on a vehicle you shouldn't here embarrassing pinging sounds.
Sincerely,
Lanya
Heck this sort of popping sound as things cool off is something even my TV does and I can sometimes hear clearly at night from the one in my bedroom.
Just fixed this same issue again two days ago. Made a big improvement on idle. Also runs smoother during all driving.
Arrie
I will try the Spark plug wires - hopefully that will work -
Thanks
I have a 2001 Denali XL and I had a similar problem when turning. It initially only happened with sharp turns, but then got worse until it was happening every time I turned into a parking space. The sound was kind of a grinding sound and the front wheels felt like I was running a 4 wheel drive vehicle on dry pavement. It was a choppy jerking feeling along with the grinding sound. It took several trips to the dealer and a lot of patience to fix this.
First they changed the power steering pump, no luck. Then they tore apart the transfer case and put it back together, with no luck. Next, they replaced the front differential, with no luck. On my fourth visit, they replaced a coupling in the transfer case and it finally worked right!! After changing that coupling in the transfer case, I have not had any more steering problems, going on 4 months now.
I would love to hear what solves your problem, if they ever figure it out. As I recall, there is a technical service bulletin for some denalis that experience a "shuddering" in the front when turning sharp. My dealer never would acknowledge if that was related to my issue.