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SUVs Chevrolet Suburban & Tahoe 2007 and newer Chevrolet Tahoe and GMC Yukon
3125 messages, Last post on Nov 27, 2009 at 6:32 PM
You are in the Chevrolet Suburban & Tahoe Forum. Your Hosts are steve_ & tidester
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Replying to: summersby (May 14, 2006 6:19 pm) I do have a question about that though. Once the first year of Onstar is up...do you have to continue paying for onstar to use the verizon service on the system? I have had several Tahoes and Blazers with Onstar and never renewed it after the free year...because I have not needed it. Anybody know?
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I am providing some comments on the new 6.2 Ltr engine with 6spd tranny while towing. * Please note that the Denali 6.2 eng. is the same as the Escalades. The Escalade is tuned for Premium Fuel, so that's why it claims a few more horses. The Denali's torque rating is 2 lbs different, so they are equivalent by most standards. The total weight of the boat/trailer is 4200 lbs. Tongue weight is about 350 lbs (depends on fuel in boat). We went to a lake that's about 55 miles from home (Mother's Day outing). It required driving 20 miles on I-80 (over Donner Summit in the Sierra Nevada), and 30 miles on Hwy 20 to Nevada City. These roads are up and down, and Highway 20 has several 30 mph hairpins. There are several steep uphill and downhill grades, which RV's typically go 30mph floored (up). As indicated in my previous post, the reason I wanted the new GM was mostly because of the transmission. The previous GM 4 spds left much to be desired, since any uphills required 2nd gear, 4-5k rpm engine speeds to keep up with traffic. I'm am really happy about how the Escalade handles the hills. I usually would manually hold gears in the old GM's, but in the 6 spd, I just put it in TOW mode, and it does some amazing things (IMO). Going UP, the tranny would find a gear that did not require more than 3500 rpms (staying around 60mph). This meant that I could still STOMP on it, and get the next lower gear to pass (up hill). Going DOWN, the tranny would dn-shift anytime you slowed down. The gear it will shift to depends on how much brake you are applying. On one stretch of brake smoking downhill, I would normally manually downshift into 2nd gear (old GM) just to maintain about 60. However, even with the trailer equiped with 4 whl discs, it would still require some brake pressue to maintain speed. The Caddy dn-shifted into a gear that kept the engine around 4k rpm, and I did not have to apply brakes. It was a little un-nerving to have it do this at first, but once I understood the relationship between braking pressure, and the auto dn-shifts, it was welcome. No more using the shift selector to control speeds up or down. The OLD GM's would do too much gear seeking in just tow-mode, and this was annoying. Also, the Caddy's shifts are not as harsh like the tow-mode in the old 4 spd. The "old GMs" I refer to is an '01 Denali and '05 Denali XL. Dave 
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Replying to: awf_axis (May 15, 2006 10:22 am) My boat weighs right around 4800lbs and hills can be downright painful with my 5.3 4speed powered Suburban. Thanks for the detailed report. It answered many of my questions. Sharp looking rig.
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Replying to: justamom2 (May 15, 2006 5:46 am) |
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Replying to: justamom2 (May 15, 2006 5:46 am) |
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| My LT-3 with just over 5000 miles now sounds like a rattle trap. The door seals seem to be the culprit-they seem rub the inside of the doors over uneven roads. I have tried silicone spray and WD-40 but both wash off after rainfalls. Any suggestions? | |
Hey all, very informative forum. I've got a question for you pros out there... I am going to install a set of Helo Skid 20" wheels with 305/50/20 Nitto Terra Grappler tires. Do I need the 20x9.0 or the 20x8.5 so that the tire/wheel combo wont stick out of my fender well? Any advice on wheel offset as well? Also, never had Terra Grapplers or that size before....any words from the wise?
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Replying to: cecook (May 16, 2006 8:54 am) FYI: The factory tires with 20x8.5" rims are 275x55x20. As for the off-set, the 2007 design requires a higher positive off-set than in previous years. The factory rims on a 9" rim (22x9) is 31mm (I have an '07 Escalade with 22x9 wheels). The best you can do right now is find a 9.5" wheel, with at least 20mm to 36mm positive off-set. Otherwise, your tires will be outside the fenders, and throw water, mud, sand onto your mirrors and up the doors. Also, it makes the vehicle look odd, but that's a subjective opinion. Good luck, Dave
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Replying to: cecook (May 16, 2006 8:54 am) |
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Replying to: tourguide (Sep 01, 2005 3:01 pm) |
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