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2007 Chevrolet Tahoe/GMC Yukon

3125 messages,  Last post on Nov 27, 2009 at 6:32 PM

You are in the GMC Yukon Forum. Your Hosts are steve_ & tidester

What is this discussion about? Chevrolet Tahoe, GMC Yukon, SUV


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#3053 of 3125
Re: Tons of Issues [fed_up] by candyk
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
#3054 of 3125
Re: Tons of Issues [suvmom4ever] by tholliday
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.
#3055 of 3125
Re: Tons of Issues [candyk] by zepres
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
#3056 of 3125
Re: Tire Pressure Monitor System ( TPM) [73shark] by mtmsimple
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.
#3057 of 3125
AFM Reprogram to get better fuel economy by bill2007yukon
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?
#3058 of 3125
Re: AFM Reprogram to get better fuel economy [bill2007yukon] by obyone
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.
#3059 of 3125
Re: AFM Reprogram to get better fuel economy [bill2007yukon] by 73shark
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.
#3060 of 3125
mileage for 07 Tahoe by gmarugg
Aug 16, 2008 (4:46 pm)
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I am getting about 16.5 MPG with mostly hwy miles. I have heard people talk about getting 20 MPG. What is normal?
#3061 of 3125
Whats causing my 03 Yukon XL's battery to die???? by gpierce2
Aug 16, 2008 (6:57 pm)
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I'm new here. Hi i'm Gregg. Last week I purchased an 03 Yukon XL. The truck would not start after a two hour trip. I jumped it and ran it next morning dead again. Sounds like a dead battery right? Well all this week it starts up no problem. tonight I went to the grocery store went in for ten minutes while the family stayed out with the radio on(truck was off) and the head lights on . When I went to start it the truck was dead. I needed a jump start. I came home just try to start it with no problems. Does this sound like an electrical problem???I thought when cranking batteries died. That was it.
#3062 of 3125
'07 Tahoe leaking lots of oil... by hardin_thicke
Aug 16, 2008 (7:25 pm)
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I have a bad oil leak that appears to be coming from directly above the oil filter, (it's not the filter) on the block somewhere. The entire bottom side of the vehicle and rear glass is covered with an oil mist. Anyone else encounter this problem? I have 45K on it. I lost about a quart during a recent 700 mile trip.

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