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2007 and newer Chevrolet Tahoe and GMC Yukon

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#2561 of 3122 Re: Low fuel warning hyperactive [gfraigun] by 73shark Jun 04, 2007 (7:22 pm)
Replying to: gfraigun (May 30, 2007 8:21 pm) What's happening when you go to tow mode is it takes it out of OD which puts the engine in a higher rpm band (approx. where it would be w/ 4.10 gears). It also changes shift points but that doesn't affect V4 mode. You can't duplicate this by just putting it in Drive because that inhibits V4. Replies to this message: gfraigun (Jun 04, 2007 9:12 pm)
#2562 of 3122 Re: Low fuel warning hyperactive [73shark] by gfraigun Jun 04, 2007 (9:12 pm)
Replying to: 73shark (Jun 04, 2007 7:22 pm) Yes, I understand that about the V4/Tow mode that it switches the shift point and puts the engine in a higher RPM. However, I've been playing with it, and on a steady speed drive with slight uphills the Tahoe will stay in V4 mode even on the uphills and I've noticed a slightly higher mpg when doing this vs. letting it stay in V8 mode with no tow mode on. Is it something I'm going to do by habit, no, not in the San Fernando Valley, just too much stop and go traffic.
#2563 of 3122 Re: Finally... My first tank of Ethanol [saratogalake] by junglegeorge Jun 05, 2007 (3:51 pm)
Replying to: saratogalake (Jun 04, 2007 11:56 am) Steve, Thanks for the feedback on E-85, I have also tried it but must admit I have not received the same results. I also live in up-state NY (Guilderland) and my 07 Tahoe only has 18K on the clock. My BEST tank on Reg Gas was 17.9 with an average of 15.4 I just returned from a trip to NC,1900 miles, best tank, 16.4, worst tank 14.2 again on Reg gas, we won’t talk about the numbers when running E-85, as they are to depressing. I have an open case with GM, actually the Tahoe goes in for service next week, they are going to change several sensors and the body control module. The service manager drove it for a week with similar results, so we both are convinced it is not driver related. Are you running 3:73’s or 4:10’s ? FYI, still no word on the wipers, but at least it stopped snowing for a while. George Replies to this message: ahightower (Jun 06, 2007 11:56 am)
#2564 of 3122 Re: Finally... My first tank of Ethanol [junglegeorge] by ahightower Jun 06, 2007 (11:56 am)
Replying to: junglegeorge (Jun 05, 2007 3:51 pm) I know there are a few E85 stations in my area, but I've yet to try it. I like the idea. It looks like E85 is about 15-20% less expensive than gasoline, so I'd need to see about 13 mpg in mixed driving to break even. Looking forward to trying it out sometime soon.
#2565 of 3122 Re: Finally... My first tank of Ethanol [saratogalake] by mark133 Jun 07, 2007 (3:03 am)
Replying to: saratogalake (Jun 04, 2007 11:56 am) Hi Steve name is Mark on this end. Im from the Albany area What dealer do you recommend I am in the process of purchasing a 2007 Suburban for my business. I had a problem with Denooyer so wont go there any other thoughts thanks Replies to this message: saratogalake (Jun 07, 2007 12:56 pm) stoli2 (Jun 08, 2007 4:45 am) junglegeorge (Jun 07, 2007 4:29 pm)
#2566 of 3122 Thoughts on my new LTZ Tahoe by gregeas Jun 07, 2007 (11:03 am)
So far I have put about 3k miles on my 07 Tahoe LTZ. First, I'll say that I think it's a big step up from the two Eddie Bauer Expeditions I owned previously. The Tahoe is better looking (much), smoother riding, and more intelligently designed across the board. The Tahoe's interior space seems smaller, but other than that the only drawback versus the Expedition is the third-row seat design. The fold-flat seat in the Expedition is much better than the heavy removable one in the Tahoe.   On highway trips I've gotten up to 19 MPG, which is pretty damn good.   I've had two problems so far: a dead battery (for no reason -- it was so dead that jump starting wouldn't help, and I had to call OnStar) and an *extremely* annoying rattle in the headliner. I'm taking it in next week to have the dealer fix the rattle.   Here's my question: has anyone tried driving offroad, and specifically on the beach, with the factory 20" wheels? I've read that the bigger sized wheels do not perform as well in off-road conditions. One of the reasons I bought the Tahoe was for its 4WD performance (versus, say, the Yulon Denali with AWD), and I'm disappointed that the 20" wheels, which I didn't really want, can hinder performance. Any thoughts here? Replies to this message: tom213 (Jun 07, 2007 3:51 pm) rockman59 (Jun 07, 2007 6:26 pm) gfraigun (Jun 08, 2007 7:11 am) rockman59 (Jun 08, 2007 6:45 pm) and 12 more... timd32 (Jul 22, 2007 4:12 am) dmyer3 (Jul 23, 2007 4:02 pm)
#2567 of 3122 Re: Finally... My first tank of Ethanol [mark133] by saratogalake Jun 07, 2007 (12:56 pm)
Replying to: mark133 (Jun 07, 2007 3:03 am) Hi Mark, I purchased mine from Maltbie Chevrolet in Lake George.. Got the best deal. I ordered mine as there were none on the lot last june. Mine will be one year old on June 30th.. Very happy so far.. Good Luck.. Replies to this message: stoli2 (Jun 08, 2007 4:45 am)
#2568 of 3122 Re: Thoughts on my new LTZ Tahoe [gregeas] by tom213 Jun 07, 2007 (3:51 pm)
Replying to: gregeas (Jun 07, 2007 11:03 am) I had that same "extremely annoying" rattle in the head liner, over the 3rd row seat, too. I took it in to the dealer and 2 hours after I dropped it off, I get a call saying they didn't want to take the head liner down for fear of causing more problems. Once I convinced them that this isn't brain surgery, I said that all they really need to do is remove the dome light and insert as much foam packing (like used in packages), 1 1/2 to 2 inches in thickness. It's the HVAC duct work and/or wiring bundles that are bouncing around in there. I would have done it myself if I was sure I wouldn't have accidentally broken the dome light trying to remove it. It took them all of 10 minutes to find some foam from a box in the parts department and do the job itself. Haven't heard a rattle since!   As for your wheels comment; I've got a Z71 which has the 18" wheels, which I presume is better for off-road driving and why that size is what comes with the Z. So maybe you could get OEM Chevy 18" wheels for your off-road adventures and keep the 20"ers for other times. Just a thought. The 18'ers that come with the Z71 ride surprisingly smooth compared to my former 2004 Z71. I guess it's all in the new suspension system on the 2007 models.   Tom S.
#2569 of 3122 Re: Finally... My first tank of Ethanol [mark133] by junglegeorge Jun 07, 2007 (4:29 pm)
Replying to: mark133 (Jun 07, 2007 3:03 am) Mark,   I am in Guilderland, and have purchased my last 3 Tahoes from Hand Motors in Manchester VT, give Chris a call, he will bend over backwards for your out of town business. I also purchased a set of factory 17 inch wheels and sensors last year that I did not use, as the 20's are working fine for my needs. If you are going to purchase smaller wheels, maybe we can work a deal. 19 MPG sounds good, what gears are you running 3:73's or 4:10's ? George
#2570 of 3122 Re: Finally... My first tank of Ethanol [saratogalake] by junglegeorge Jun 07, 2007 (4:32 pm)
Replying to: saratogalake (Jun 04, 2007 11:56 am) Steve, Do you know what gears you are running? 3:73's or 4:10's ? Thanks George

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