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2007 and newer Chevrolet Tahoe and GMC Yukon

3122 messages,  Last post on Oct 29, 2009 at 11:39 AM

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

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#876 of 3122 Re: Leaking air and tail light gap...... [rockin_ltz] by 07tahoeguy Apr 24, 2006 (8:48 am)
Replying to: rockin_ltz (Apr 23, 2006 4:06 pm) I don't have the gap problem. I have noticed the air escaping on both rear doors and around the rear window during remote start and when I fan speed is set to max. Dealership had no idea if this was normal so they checked the other 20 tahoes on the lot and they did the same thing. Dealer told me it must be designed that way or it wouldn't happen on all of them. Wish I knew... Replies to this message: jay_24 (Apr 24, 2006 10:34 am) 73shark (Apr 25, 2006 4:45 pm)
#877 of 3122 Re: Leaking air and tail light gap...... [07tahoeguy] by jay_24 Apr 24, 2006 (10:34 am)
Replying to: 07tahoeguy (Apr 24, 2006 8:48 am) If you don't have the system set to recirculate, where does the air go? It has to leak out some where or blow-up like a balloon. Even on re-circulate I bet some fresh air is brought in.   I've always wondered where the air went out. guess I know now.   --jay
#878 of 3122 Re: Tahoe MPG [shawnhackett] by bodi77 Apr 24, 2006 (3:09 pm)
Replying to: shawnhackett (Apr 19, 2006 11:57 am) 93 octane is a total waste of money, not just because it cost more, but because your tahoe wont run as well. The higher the octane the, the lower the energy the gas has. High octane gas us used to slow down the ignition in your cylinders. The slower the ignition the less power you have. The reason high end cars require high octane is because the run at a higher compression ratio and a quicker ignition will damage the pistons and rings. The higher octane is used to prevent detonation. Replies to this message: 06lly (Apr 26, 2006 7:54 am) shawnhackett (Apr 30, 2006 5:38 pm) 73shark (Apr 30, 2006 6:09 pm)
#879 of 3122 Cold Air Intake by junglegeorge Apr 25, 2006 (12:59 pm)
Does anybody have any experience with these, do they effect MPG? Prices seam to range from $180 - $300. Any feedback would be greatly appreciated. Replies to this message: tidester (Apr 25, 2006 1:18 pm) awf_axis (Apr 25, 2006 2:25 pm) tdoh (Apr 26, 2006 1:10 pm) and 1 more...
#880 of 3122 Re: Cold Air Intake [junglegeorge] by tidester HOST Apr 25, 2006 (1:18 pm)
Replying to: junglegeorge (Apr 25, 2006 12:59 pm) I don't have any experience with Cold Air Intakes but my understanding of them is that you can achieve improved mileage only if you do not use the enhanced horsepower they are supposed to provide.   Anyone know for sure?   tidester, host Replies to this message: awf_axis (Apr 25, 2006 2:25 pm) tdoh (Apr 26, 2006 1:10 pm) junglegeorge (Apr 27, 2006 4:09 am)
#881 of 3122 Re: Cold Air Intake [tidester] by awf_axis Apr 25, 2006 (2:25 pm)
Replying to: tidester (Apr 25, 2006 1:18 pm) If you believe "Truckin" magazine, they took a 2007 Tahoe, with the 5.3 engine, and achieved increased HP on the Dyno. Sorry, don't have the numbers with me, but it was double digits.   It's in this months issue, which includes the McGaughys 2007 Tahoe lowering kit install "how to".   Dave Replies to this message: tdoh (Apr 26, 2006 1:10 pm) junglegeorge (Apr 27, 2006 4:09 am)
#882 of 3122 Re: Leaking air and tail light gap...... [07tahoeguy] by 73shark Apr 25, 2006 (4:45 pm)
Replying to: 07tahoeguy (Apr 24, 2006 8:48 am) Older GM cars had a vent on the lower rear door pillar that allowed the internal overpressure to equalize. Not sure where they currently vent at.
#883 of 3122 More ponies? by adjmcloon Apr 25, 2006 (5:34 pm)
I'm curious about the AEM intake. Although my '07 is better than the '00 was power-wise, it still could stand a little more pep. Does anyone know of any custom ECM's or programmers available for the 2007 models yet?
#884 of 3122 Re: Tahoe MPG [bodi77] by 06lly Apr 26, 2006 (7:54 am)
Replying to: bodi77 (Apr 24, 2006 3:09 pm) Hold the phone there Mr. Bodi. You are exactly right about the higher octane being needed for higher compression ratio, but your off track a little with the "slowing down the ignition" bit. The higher octane actually delays the ignition rather than slow it down. High octane fuel does not have less energy than low octane. The purpose of delaying the ignition is to avoid any pre-ignition that causes pinging.   With these modern engines, the engine modules are constantly trying to advance the ignition to get the most out of whatever fuel you are using. Then, when some preignition is detected, it backs the timing off a bit to avoid the pinging.   By running high octane fuel, you get the most out of your engine both in performance and efficiency. Problem is, it is not hardly enough to notice unless you do some very careful and elaborate testing. And it is not enough to justify the higher cost.   So, if you are looking to save $$, the best bet is run the lowest octane that your engine will let you get away with. Then take it easy on the throttle if there is any hint of pinging. The pinging is not good for the engine.   If your goal is to beat the other guy away from the stoplight, go with the highest octane. You will have a few more ponies but less dollars to spend on beer.
#885 of 3122 Re: Ordered 07 Tahoe [stakeout] by tdoh Apr 26, 2006 (12:20 pm)
Replying to: stakeout (Apr 07, 2006 2:19 pm) How true!!! Just like in the old days--before car manufacturers started to offer "real" vehicle start immobilizers, they were pushing that Loctronics cr*p. Heck, my brother (he runs an auto accessories shop) told me of how he was able to get one of his customers--who was there to get an aftermarket alarm installed in her vehicle--to make the dealer give her a refund on the Loctronics that was installed in her vehicle by instructing her to show the dealer how easy it was to bypass it w/ just a paperclip, thus negating the need for that "special" Loctronics chip you had to stick in the unit before starting the vehicle.   But yeah, none of that "special" after-the-fact paint sealant for me; and especially for as much as some dealers offer it for...if I had to choose between spending that much money on paint sealant vs. allocating it towards an extended warranty (not that one would necessarily need to get one)...the choice is obvious.

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