Last post on Oct 13, 2010 at 4:13 PM
You are in the Pontiac GTO
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Pontiac GTO, Coupe
Jul 28, 2005 (10:40 am)
According to motortrend:
Spied: 2008 Pontiac GTO
All-new all-American Mustang fighter
By Editors of Motor Trend
Photography by Marc Cook
Motor Trend, May 2005
This one's a winner -- The design for the new GTO coming to Pontiac showrooms in 2007 as a 2008 model. The big, rear-drive sport coupe will be designed and built in the U.S., possibly at GM's Hamtramck or Wilmington plants, and it's likely to show up in concept form at a 2006 auto show, probably Detroit in January.
#3135 of 4353 Re: GM confirms new 2008-2009 GTO [elkiii]
Jul 28, 2005 (10:54 am)
I think they're trying to get their stock price up!
#3136 of 4353 Re: warranty service & check up [hammen2]
Jul 28, 2005 (11:50 am)
Hey Hammen and Coreseller--
They did a free wheel balance but they didn't have the machine that Hammen talked about, and it helped little in the shimmy department. The shimmy isn't very bad and it's most noticeable when the tires are cold. They reflashed the gages and MPH and that seems fine. They decided the car came wth dino oil, so I went back. The mobil1 oil change was like 65 which seemed a bit high.
My drivers seat has the jumpy problem, will have them check that next time. I already had the thunk in the trunk fixed. I'll look at the inside tires myself, and I'll have them check the bolts and freeze plugs next time too. Thanks for the tips!
#3137 of 4353 Re: warranty service & check up [dat2]
Jul 28, 2005 (12:06 pm)
they didn't have the machine that Hammen talked about, and it helped little in the shimmy department
Call and speak with the service manager. Explain to him that the balance they did didn't fix the problem. Ask them to refer you to a shop with the Hunter GSP9700 so that they can do a road-force balance, and to have GM reimburse you for that (or have the shop bill them, either way). This is the only way to fix shimmy/vibration issues on newer cars with a very stiff body structure (my Aurora, and all of the other G-body FWD vehicles, have this issue as well). GM normally doesn't pay for alignments or balancing past 12k miles, and I think you said you were close or over that, so I wouldn't wait/would call them on this right away.
Re: the oil change, I've been buying the oil and filters myself (5 qt. jug of M1, $20 at Wal-Mart plus $5 for a 6th qt, and then either an M1 or NAPA gold filter for $6-$7). I keep meaning to do my own oil change on the GTO (have to remove 3 of the 4 bolts holding the huge skidplate on, and swing it out of the way), but never have time. My dealer will do it for $20 or so - makes the change about $51.
#3138 of 4353 Re: 2008 GTO [exalteddragon1]
Jul 28, 2005 (1:02 pm)
Yep, the description of the original Zeta GTO I received sounded like the front end of that car looks.
Check out the '99 concept (which they supposedly based the design from) here:
Personally not a huge fan of it, but understand how it, and the retro-inspired hood, could interest people. The illustrations posted make it look like a recent (pre-'05) Mustang from the side, IMHO.
#3139 of 4353 Re: warranty service & check up [hammen2]
Jul 28, 2005 (2:08 pm)
Hammen, does the GSP9700 balance the wheel/brake assembly on the car? The reason I ask is that I've also encountered a situation where a replacement rotor was just slightly out of balance. I replaced the rotor and solved the problem because I couldn't find a shop that could balance the entire assembly. Knowing what to ask for in the future would be helpful.
Also, I had a problem in the past where the tire has a defect that caused a squriming between the tread and belts. This occured after about 25K miles. Since the problem seems worse when cold I'd make certain the problem isn't with the tire itself. The road-force balance may help determine this but I'm not certain.
#3140 of 4353 Re: warranty service & check up [dat2]
Jul 28, 2005 (2:17 pm)
Meant to get back to you on this. Check Sharrett in Hargerstown or Burdette in Hyattstown. One of them might have the machine hammen describes.
#3141 of 4353 Re: 2008 GTO [exalteddragon1]
Jul 28, 2005 (2:20 pm)
Geez, this almost looks like an update to the firebird to me.
#3142 of 4353 Re: warranty service & check up [elkiii]
Jul 28, 2005 (2:58 pm)
Info, and a shop locator, can be found at http://www.gsp9700.com/
Basically, this machine applies a counter-force to the tire (and rim), simulating the force of the road against the tire. It is able to measure whether the rim and or tire are round when rolling. It may be necessary to rotate the tire on the rim to reduce the amount of wobble. It may also be that the tires themselves are out of round, requiring replacement.
By the way, the KWDS on the GTO WILL flat-spot when sitting overnight. This will result in some vibration/annoyance, at least for the first minute or two of travel. It's this tendency to flat-spot which is the reason why the tire pressure gets pumped up to 60 psi before shipping - this eliminates the flat-spotting, but makes for an awfully uncomfortable ride and handling (not to mention, diminished suspension performance).
Hope this helps,
#3143 of 4353 Re: Warranty [preformancenut]
Jul 28, 2005 (5:38 pm)
do you know what performance mods I can make to my 05 that will not void the warranty. I would assume a ram air kit would be ok but what about headers? I know tweaking the computer is out of the question unless you are able to change the settings back to factory specs before being serviced.
You can install a K&N cone filter (they have kits for the '04's and '05's) without voiding your warranty. GM does have a TSB out for all their cars, warning that they may not cover a dead MAF sensor if the car's owner used a heavily-oiled third-party air filter, but that's about the worst thing you can do by installing the K&N. Lingenfelter and New Era also make intake kits for the GTO.
Regarding headers, this depends on your dealer. You should make friends with your service manager and ask them how far you can go. I'm sure headers and a cam wouldn't preclude them from warrantying, say, a battery, an ABS problem, et. al., but if you had driveline problems, that might be a problem. Depends on the dealer.
Regarding tweaking the computer, using a handheld tuner like a DiabloSport Predator
makes it very easy to tweak settings. The first thing this tuner does is back up your stock tune, so it's very easy (as long as your PCM is working) to restore the default settings back before bringing the car in for service.
Sorry for the delay in responding, hope this helps,