- #3050 of 3122
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Re: Tons of Issues [fed_up]
by gfraigun
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Jun 23, 2008 (10:50 pm)
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Replying to: fed_up (Jun 23, 2008 8:14 pm)
I think there are some service bulletins or recalls on some of the issues you're mentioning... Like the battery stuff... I've had a different set of problems with mine... Like 5 thinks that Chevy agrees are problems, but just isn't fixing.. Call the GM Customer Service line they will help you... Also, talk to the Service manager at your dealer and even try a couple of other dealers to see if any will help you better...
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- #3051 of 3122
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Re: Tons of Issues [fed_up]
by suvmom4ever
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Jun 23, 2008 (11:19 pm)
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Replying to: fed_up (Jun 23, 2008 8:14 pm)
I am fed up with the starter problem!!! A few months ago, my battery was dead. This concerned me because there was not a reason for this to happen, plus it was only a year old. The starter problem began about 6 wks. When I crank the car, it turns over but will not start and just keeps going like I am holding the key. I quickly turn it off worried its going to cause damage. When I try again, it would start as usual. On the first repair visit, the service dept. said, " The diagnostic test results did not detect a problem and they said, "this is normal". That's BS!
It continued and sometimes would not start until the third try. On the second visit to be repaired, they said the problem is the battery and it wasnt getting enough juice to start, so I bought a new battery. I am headed back tomorrow but not with a patient attitude... After replacing the battery, it is worse! When i turn the key it does not start and is making a grinding noise. It is taking a minimum of 4 trys to crank. It's driving me crazy and I have no more patience for their computer testing especially when anyone that hears it ask if I an having car problems.
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- #3052 of 3122
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Re: Tons of Issues [suvmom4ever]
by fed_up
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Jun 24, 2008 (11:57 am)
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Replying to: suvmom4ever (Jun 23, 2008 11:19 pm)
I agree with you on the starter issue!! When I first brought up the issue at the dealership they said they couldn't find anything wrong and it's normal! It's normal for a new vehical to sound like trash?!
I'm going to take the advice to call the GM service center AND try another dealer's service dept. The thing that irritates me is that I have taken more than enough time out of my life trying to get this thing fixed!
Good luck!
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- #3053 of 3122
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Re: Tons of Issues [fed_up]
by candyk
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Jun 25, 2008 (8:40 pm)
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Replying to: fed_up (Jun 23, 2008 8:14 pm)
I have put two transmissions in my 07 Tahoe. 1 week after we purchased our tahoe the transmission went out, I had just under 400 miles they put a new one in. Two weeks ago I had with 22000 miles on my tahoe and they had to rebuild it. I am checking into the lemon law. 
candyk
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- #3054 of 3122
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Re: Tons of Issues [suvmom4ever]
by tholliday
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Jul 25, 2008 (10:13 am)
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Replying to: suvmom4ever (Jun 23, 2008 11:19 pm)
I have a 2007 Suburban and have had the same problems. I went to start the car last week and it sounded like I was holding the key. It happened at least three more times and I called the service dept. They at first told me that it might be the cheap gas that I had in my car. One service manager told me that he had 2 other customers last week with the same problem with their new Suburbans. They took the car and called me later that day and told me it was the fuel pump. They replaced the fuel pump and everything seemed fine until later that same day it started doing the same thing again! I will be calling back the service dept to let them know. Obviously this is a problem! I will post again if I get a solution.
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- #3055 of 3122
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Re: Tons of Issues [candyk]
by zepres
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Jul 25, 2008 (10:44 am)
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Replying to: candyk (Jun 25, 2008 8:40 pm)
Hi, I too am researching into lemon law. Our 07 Tahoe LTZ been leaking trans oil since day 1. Service tried to fix it 5 times already. Now seeing drops of oil on garage floor again.
Please post your finding.
Thanks
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- #3056 of 3122
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Re: Tire Pressure Monitor System ( TPM) [73shark]
by mtmsimple
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Jul 31, 2008 (3:19 am)
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Replying to: 73shark (Jun 12, 2008 3:50 pm)
I just found the OE replacement TPM sensor from Belle Tire (it seems Orange *** brand, don't remember exactly), it much cheaper than original. just share with you. Jason.
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- #3057 of 3122
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AFM Reprogram to get better fuel economy
by bill2007yukon
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Aug 14, 2008 (10:02 am)
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Has anyone hd any experience in getting the ECU reprogrammed so as to make the engine stay in V-4 mode more often? With our 2007 Yukon, we NEVER get on it and pretty much just baby it around town so as to get better gas mileage so I think this rig could stay in V-4 pretty much all day.
So what is the logic that the ECU uses that tells the engine to go from V4 to V8 and back?
I am working with Jason Gadberry at Blackbear Performance and he is really sharp...and he thinks he can crack the code.
So has anyone actually got this done to their truck? What kind fuel mileage of performance did you get?
Any pit falls of things to avoid?
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- #3058 of 3122
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Re: AFM Reprogram to get better fuel economy [bill2007yukon]
by obyone
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Aug 14, 2008 (10:54 am)
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Replying to: bill2007yukon (Aug 14, 2008 10:02 am)
As with any type of ECU reprogramming, unless returned to stock when taken into the dealer for any type of warranty work, warranty may be void. I've seen it go either way depending basically on the service manager and what kind of mood he is in. That is if they find the programming.
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- #3059 of 3122
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Re: AFM Reprogram to get better fuel economy [bill2007yukon]
by 73shark
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Aug 14, 2008 (11:29 am)
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Replying to: bill2007yukon (Aug 14, 2008 10:02 am)
The ECU program puts it into the V4 mode when it determines that the engine can safely handle the load. It can stay in V4 for up to ten minutes and then has to go to V8 to allow temperatures in the engine to equalize. I've found that w/ 3.73 gears, mine stays in V4 more in town when in the tow/haul mode. Sometimes that results in higher mpg and sometimes it doesn't because it does cause rpm to be higher as it kicks out OD at lower speeds.
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