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GMC Yukon and Yukon Denali Problems

779 messages,  Last post on Oct 31, 2009 at 6:36 AM

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What is this discussion about? GMC Yukon Denali, SUV


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#571 of 779
Re: GMC Yukon Denali Problems [chevy156] by obyone
Jul 23, 2007 (10:25 pm)
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Replying to: chevy156 (Jul 23, 2007 7:40 pm)

That solved the problem for the speedometer but what about the odometer?
#572 of 779
Re: 2007 Denali: Serious problems and design flaws [skytop1] by dunracin
Jul 24, 2007 (7:03 am)
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Replying to: skytop1 (Jul 13, 2007 8:57 pm)

I agrre with most of what you have said. I am very disappointed in my 2007 Denali. My 2002 Tahoe was better.
 
Flaws:
1. Dash and guages are unreadable in daytime.
2. Back up camera comes on far too slow.
3. Suspension stinks.
4. Gas mileage is terrible - 14 mpg on highway
5. The transmission is terrible and shifts hard.
#573 of 779
2007 Yukon Denali by snake3
Jul 30, 2007 (12:30 pm)
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$55,000! And the dealer told me there was nothing wrong with the transmission. I almost got killed this am on the Katy Freeway in Houston, Texas because when I pulled out and accelerated, the big D didn't go anywhere, just bogged down. Gas mileage is 13.8 in city driving and 16.9 on the highway under 75 mph. The fit and finish of my unit is very good. It's just this crazy transmission that won't go when I want to go and will go when I try to stop. Seems like GMC has a problem.
#574 of 779
Re: 2007 Yukon Denali still MORE PROBLEMS [snake3] by skytop1
Jul 30, 2007 (3:28 pm)
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Replying to: snake3 (Jul 30, 2007 12:30 pm)

I cannot believe what you have stated in your post! My piece of inferior crap Sierra Denali does the exact same thing and does not accelerate or shift correctly!!!
 
Also Snake3, you will unfortunately become frustrated with the standard GM corporate reply to your serious defects and problems with the phrase "your vehicle is operating within normal parameters." They will routinely deny the existence of defects and problems while you suffer with them. They keep stating this worn out phrase which serves to incite and ignite pure disrespect and loathing disgust toward GM and their little minions. They spawn and actually ferment customer alienation. They don't have a clue how to treat their valuable customer or regard them. Their methods are tantamount to a tragic and vile corporate policy. They are committing business suicide.
 
My GMC Sierra Denali junk truck is now in for its sixth major service repair. One of the major issues is the symptom of depressing the gas to modestly accelerate and the engine RPM's ACTUALLY DECREASE!!!! Yes, pressing on the gas causes the engine to slow down. You can hear the motor bog and see the tach drop about 300 to 400 RPM's. To make this TURD move you absolutely have to STOMP on the gas and hope the transmission finds the right gear. My transmission will upshift and downshift rapidly searching for a correct gear to use. Meanwhile, nothing is happening in the speed department.
 
This truck is a TOTAL DISGRACE and ROTTEN EXCUSE for a "world class" vehicle. I am so disgusted and livid at GM AND their virtually useless and in fact UNTRAINED mechanics. The "tranny specialist" assigned to my truck told me on the initial diagnosis test drive that my truck was the first 6 speed model he ever saw or worked on. I asked if GM had provided special training for the new 6 speed and he said no, they had not. And you wonder why GM mechanics cannot deal with the new technology or fix vehicles? You can become nauseous watching this kind of gross ineptitude in action at the GM dealership.
 I totally regret ever hearing the name General Motors or GMC.
 
General Motors is a JOKE, a humiliation and a tragic example of what was once mighty but now is humiliated and disgraced by their own ineptitude and incompetance. Maybe some lucky people are not having problems with their vehicles or don't even know if there are defects but that is all cold comfort to the multitude of those suffering and victimized by the corporate treachery, half baked engineering designs and maladroitness of the service department.
#575 of 779
2004 Denali Yukon XL Headlights by ubiert76orc
Aug 02, 2007 (11:43 am)
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I recently purchased a 2004 Denali Yukon XL. On high beams the lights cast shadows on the road in front of the car like there were fence posts in front of the lights. Has anyone else had this problem? Is this the way they are designed? This is what the dealerships are telling me. I find this unacceptable. Low beams are off when high beams are on. How can this be corrected?
#576 of 779
Re: 2004 Denali Yukon XL Headlights [ubiert76orc] by obyone
Aug 02, 2007 (12:52 pm)
Reply

Replying to: ubiert76orc (Aug 02, 2007 11:43 am)

go here for the wiring to have the low and high lights on at the same time:
 
http://www.painlessperformance.com/webcatalog/catview.php?SearchField=20
#577 of 779
Re: 2004 Denali Yukon XL Headlights [ubiert76orc] by skytop1
Aug 02, 2007 (2:25 pm)
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Replying to: ubiert76orc (Aug 02, 2007 11:43 am)

Don't you know that ALL Denali problems reported to GM service are classified "as being within normal operating parameters."
 
Welcome to the bizarre world of GM.
#578 of 779
Re: GMC "Professional Garbage" not "Pro Grade" [bnr] by kfmdt00
Aug 14, 2007 (5:23 pm)
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Replying to: bnr (Mar 17, 2007 5:07 am)

Hello,
We just purchased an 07 Denali about 8 weeks ago. We noticed that the RPMs would really go up at any slight up hill slope. Also, the mileage is not accurate, something the dealership is telling us can be attributed to its "newness" and not having been "broken in" quite yet.
 
We are taking it for its first real dealer visit on Thursday to have them check out the RPM issue...I have been looking up the Lemon Law in Texas and it really looks like the consumer has to prove a pretty tough case in order to get the vehicle deemed a lemon.
 
You mentioned that you are seeking legal assistance. Are you hiring your own attorney or doing the research yourself?
 
It's really a shame that one pays over 50K on a vehicle for this! It really hit me that we had a problem when I recently went truck shopping with my sister and we test drove a few SUVs and NONE hesitated up a steep hill much less a slight one. In fact, she accelerated right as she was going up the slope and none of the SUVs hesitated or RPMs raised. We cannot even keep the same speed we are going in our Denali when we encounter an uphill slope, much less speed up!
Does this sound like any of your problems?
Thanks for reading.
#580 of 779
Re: GMC "Professional Garbage" not "Pro Grade" [kfmdt00] by lerenis
Aug 15, 2007 (3:33 am)
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Replying to: kfmdt00 (Aug 14, 2007 5:23 pm)

I have an '07 Denali as well and it does downshift when going up a hill but not to the point of becoming a irritating problem. The engine is excellent but the six speed tranny doesn't like anything but the highway.

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