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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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#3063 of 3125 Re: Whats causing my 03 Yukon XL's battery to die???? [gpierce2] by tidester HOST Aug 16, 2008 (7:53 pm)
Replying to: gpierce2 (Aug 16, 2008 6:57 pm) Yes, it could be an electrical problem. The first thing I would check is the alternator. It sounds like your battery isn't being charged properly.   tidester, host SUVs and Smart Shopper
#3064 of 3125 Re: '07 Tahoe leaking lots of oil... [hardin_thicke] by kiawah Aug 16, 2008 (8:28 pm)
Replying to: hardin_thicke (Aug 16, 2008 7:25 pm) You sure it's not from the oil filter? You could have a gasket from the old oil filter separate from the filter....and stay on the engine (I've had that happen with the original mfg filter on my 07 Sub). I always check to make sure the old gasket comes off with the filter, else you will have a leak with the new filter.
#3065 of 3125 Re: Whats causing my 03 Yukon XL's battery to die???? [gpierce2] by 73shark Aug 16, 2008 (9:04 pm)
Replying to: gpierce2 (Aug 16, 2008 6:57 pm) Places like Advance Auto will check your alternator and battery on the vehicle for free. Replies to this message: gpierce2 (Oct 06, 2008 7:20 am) gfraigun (Oct 06, 2008 12:45 pm) kiawah (Oct 06, 2008 2:41 pm) 73shark (Oct 06, 2008 5:46 pm) gpierce2 (Oct 07, 2008 4:08 pm) and 2 more...
#3066 of 3125 Re: Whats causing my 03 Yukon XL's battery to die???? [gpierce2] by ahightower Aug 17, 2008 (7:56 am)
Replying to: gpierce2 (Aug 16, 2008 6:57 pm) Hi Gregg. I'm certainly no expert, but I suspect it may just be the battery. I had the battery die on me once at about 2 yrs/25K miles (just before heading off for vacation). I had been using a portable air compressor plugged into the cigarette lighter. Lights, radio, etc. worked fine, but the car would not start. Not even a click. OnStar button worked, so I called and they sent a guy out to jump it and it was fine for a full year. Then this past Mothers Day weekend (about 3 yrs/40K miles on the car), it died again. I was renting a little travel trailer (these things always happen just as we are headed out of town!), and again the radio, lights, etc. worked fine. I know because I had to test everything and make sure the trailer was properly connected before heading out. Then, again tried to start and nothing, not even a click. So, I got a jump and went directly to NTB. I shut the car off in their parking lot, and when I started it up again to pull it into the garage, it was perfect. No hesitation, nothing. But the guy at the garage there said 3 years was about the life expectancy of an OE battery and I decided I better just get a new one before heading out to camp in the middle of nowhere.   So, short story long, it seems to me that a dead/jumped battery can be recharged and behave well for a while and then start to stutter again after a while. If you have the original battery still, I'd go ahead and get a new one. Someone smarter than me can recommend a good brand, I ended up with whatever they happen to have at NTB because I wasn't in a position to go bargain shopping with a trailer attached and three kids in the car and a road trip set to begin the next morning. Replies to this message: gpierce2 (Aug 18, 2008 4:44 pm)
#3067 of 3125 '07 Transfer case fluid.... by hardin_thicke Aug 17, 2008 (9:52 am)
Anybody know what color the transfer case fluid is? I have a lot of greenish fluid all over the bottom of my Tahoe. Replies to this message: rockman59 (Aug 23, 2008 4:44 pm) hardin_thicke (Aug 23, 2008 6:56 pm)
#3068 of 3125 Re: mileage for 07 Tahoe [gmarugg] by gfraigun Aug 17, 2008 (7:52 pm)
Replying to: gmarugg (Aug 16, 2008 4:46 pm) #3060 of 3067 mileage for 07 Tahoe by gmarugg Aug 16, 2008 (5:46 pm) I am getting about 16.5 MPG with mostly hwy miles. I have heard people talk about getting 20 MPG. What is normal?           Normal seriously depends on your driving style. My first summer, I averaged, 13MPG and now, 2 summers later, I'm at about 15MPG. A majority of street driving. My advice, use cruise control as much as possible. When approaching lights, let the momentum of the truck carry you as far as possible. Start up, nice and easy. Finally, cut 5mph off of your average speed.   I have a lot of up and down driving where I am at, but if I am on the highway using cruise control I can get around 19 to 20mpg. But since my daily commute is heavy street driving I usually don't get that.   Also, look up Hypermiling. Practice the safe techniques of hypermiling and you will see a big difference.
#3069 of 3125 Re: AFM Reprogram to get better fuel economy [bill2007yukon] by gfraigun Aug 17, 2008 (7:55 pm)
Replying to: bill2007yukon (Aug 14, 2008 10:02 am) **Quote** 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? **End Quote**   I would suggest using cruise control as much as possible. I notice on my Tahoe, if I'm just driving I will rarely see V4, but with cruise control I'm in V4 a lot more. Replies to this message: nosbor77 (Aug 28, 2008 8:01 am) nosbor77 (Aug 28, 2008 8:05 am)
#3070 of 3125 Re: Whats causing my 03 Yukon XL's battery to die???? [ahightower] by gpierce2 Aug 18, 2008 (4:44 pm)
Replying to: ahightower (Aug 17, 2008 7:56 am) Thanks for the info. It has'nt let me down for a couple of days and I had Autozone check the battery and the report read that the battery is fine. I dont know we'll see. Thanks Gregg
#3071 of 3125 Re: '07 Transfer case fluid.... [hardin_thicke] by rockman59 Aug 23, 2008 (4:44 pm)
Replying to: hardin_thicke (Aug 17, 2008 9:52 am) I have a lot of greenish fluid all over the bottom of my Tahoe. _____________________________________________________________________ Green fluid is almost always from a coolant leak. Check your hoses and radiator and heater hose connections. Replies to this message: hardin_thicke (Aug 23, 2008 6:56 pm)
#3072 of 3125 Re: '07 Transfer case fluid.... [rockman59] by hardin_thicke Aug 23, 2008 (6:56 pm)
Replying to: rockman59 (Aug 23, 2008 4:44 pm) Nah, it wasn't coolant. It was the transfer case. The oil pump ate a hole in the transfer case cover, resulting in the leak. It took 3 days for them to find it, order the parts, and fix it. Tahoe is 18 months old with 45,000 miles.

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