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2007 and newer Chevrolet Tahoe and GMC Yukon
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Comments
Does anyone know if anything will help besides burning it and calling the insurance company?
:mad:
Ever wonder why Edmunds is in lock step with the mfg's mileage claim of 17-21 MPG on the Tahoe? Maybe they are afraid of losing GM's advertising?
You can also confirm this along with the 9 MPG CITY mileage that consumers reports got when they tested a Tahoe just like mine and yours.
When the dealer responds with another "reason" or possible cause for missing the 16 MPG city estimate for your Tahoe ask him if the GM District Representative can become involved in determining the actual cause of the problem.
Every $1000 that you spend on gas at 11.5 MPG (not 16 MPG) and $2.25 per gallon is $282 dollars that could have been spent on something else. At 15,000 miles per year it costs us $4219.
I understand that EPA may not match real world numbers, but the Consumer Union's difference of 7mpg seems a little too far off to be satisfying..
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Kelly Blue Book trade-in on your vehicle is somewhere between $16K and $18K so you will have to give up your Yukon and $7K to $9K. My advice is to keep driving your Yukon. You can fix a lot of "problems" for what you will have to pay to end current deal.
I guess my only gripe is that there is no telescopic wheel like my previous 4x4 and for me at 6'2'' it was appreciate.
That and the 20' tires that came with it....i so should have ask for the off road version cause it plainly suck when you're outside in muddy road....so much that i'm willing to exchange my nice 20' tires with mag for the other version...so far i'm still hoping , my seller looking at it and i only drove 10000 km before changing for the winter tires...
About mpg....well i never look at it and it surely wasn't a selling point for me....i mean here we have one of the biggest suv on the market....so yeah it eat gas like a growing child but heh i knew what i was getting at the first place...
So so far so good....being the first american car i purchase i back it up with the all-around extended warranty ...but for me this was the DREAM car i always wanted....so everytime i put the key in the ignition there is a big smile on my face and i feel like a child again....:)
I have been driving myself nuts with this--is there a way in the menu for the Nav to convert from miles to kilometers? I still do not have the owners manual for my new Yukon (dealer is attempting to track it down)...HELP!!!
Zyborg
I would go by the recommendations provided in the owner's manual.
tidester, host
The general information about "break-in" is that current assembly line engines are "pre-spun", which supposedly seats the bearings and rings.
What is contradictory is that my ski-boat (new in '02), with a 5.7 GM engine, required a very tender break-in, or the warranty could be voided.
In looking around the forum here just now, I found this post about the idea:
gvmelbrty, "How to properly break-in your new engine" #117, 13 Jun 2003 3:41 am
Like Tides says, it's hard to bet against the owner's manual.
Pick a theory, any theory - just tell your service manager you are going by the manual. :P
Edmunds is just not all that scientifically involved in these topics. That disappoints becase they have a good reputation, make a ton of money off the advertising and have been at this for a long time.
Any data to support the conclusion...one way or the other would be appreciated. Edmunds?
What can you say about ring seating...compression and oil rings?
What about valve seating? Valve stem seal material?
What about actual compression testing on an engine as a fxn of time?
What about fuel economy testing during the so-called breakin period?
What about actual measured wear profiles taken off internal components?
tidester, host
Do you not agree?
That's not the issue. There simply would not be enough time for hosts to handle all the requests for information and data in these Forums. Instead, the Forums are set up for members to share information and interact with each other.
tidester, host
I actually read up on all the manuals before I took delivery of my 2007 Avalanche
Found out yesterday that there is a recall on our 2007 Suburban (recall number in subject). Dealer said it's to re-program the ECM however they didn't say why GM wants to update this. Anyone out there know what this update does? Improve gas mileage?? Fix battery dead issue?? ??
Thanks
- Gregg
Boston, Mass
I have an early 2007 Yukon with every option. Vehicle has had nothing but electrical problems. One day doors won't lock. Another day no nav, xm, steering wheel audio controls. Another day backup camera ad sensors out. Washing car and listen to radio for 30 min - key in acc mode - battery dead. And every combo in between. Dealer had to reprogram 22 out of 24 modules and reprogram keys. Dealer has been great, rental car etc however I still travel w/ a set of jumper cables and additional snacks for my 2 year old. Dealer claims numerous programing updates issued for these modules and my problems should be over - we'll see. All said and done still love my Yukon.
Only 14,000 miles and seals are already leaking. Even though I love the thing it drives me nuts that GMC engineers/manufactures so poorly.
Paying ~$50K for something that leaks is a quick way to get customers upset. I would have not settled for anything other than them fixing the leak.
Kind of like the Harley Davidson legacy. Although in the case of GMC it could play a part in ruining them further.
One more comment for kicks, when the service rep told me that my rental was a Saturn I guess he was expecting me to blow up. Although it is pathetic that they give Yukon/Tahoe owners little compact ($12K) cars to drive while their SUV's ($50K) are tied up being fixed for a manufacturers defect it isn’t that big of a deal for one day.
GM is calling it an "enhancement" for flex fuel vehicles (FFV) and are planning on updating dealer inventory and customers I assume as they return to the dealer. It is not a safety related recall. The date of the recall was 12/12/06.
From what I have observed the AFM system may have been desensitized and seems to drop into V4 mode more readily and stay there. Haven't had an opportunity to do some MPG studies to see if it has actually improved.
I suspect, and this is pure speculation on my part, that a lot of the compliants about MPG with the 2007s may have been related to FFVs and this is GM's answer to the issue. I'm really really curious whether anyone out there has had this update applied and noticed an MPG improvement.
BTW this board has been really quiet lately - guess everyone's out there enjoying their 2007's!
Regards,
- Gregg
Boston, Mass
I learned about this recall on this forum and when I asked my dealer he said my car was due. I never received a recall letter. Is this a recall or simply an enhancement performed by the dealer at will.