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Coupes & Convertibles Pontiac GTO Pontiac GTO
4348 messages, Last post on Nov 08, 2009 at 9:33 AM
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Replying to: elias (Oct 20, 2007 3:26 am) Is these the "revised-pontiac-factory specs" for the GTO? Is there a sevice bulletin out on GTO Alignment? Can my "tire -dealer" perform this alignment ....or is it wiser to have it done at my dealership since  they speak to Pontiac Tech Center? Please advise? Any "new" stuff coming -out on 2 year old..3 year old GTOs? Hello Robert? Can not wait to see our cars on "Barrett-Jackson" . Wonder what our 2005/2006 cars are going you?
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Replying to: mparis1 (Jan 15, 2008 11:06 am) for all I know, there are double-secret re-revised alignment specs from GM by now. good to check with tech center. my GTO will need tires soon so I gotta consider whether to realign and who to trust doing the realignment. the 2nd set of tires are also wearing inner edges first, i think it is due to the continued but less-than-factory negative camber but the know-it-all tire store dude disagreed. i had tire dudes rotate side to side to balance the wear and get another 5k or 10k miles out of the tires - thatrequired dismount/remount/rebalance due to directional toyo proxes. i tihnk the Pedders dudes advise a different alignment and are suspension gurus so i doubt you could go wrong to find an official pedders shop ps - my GTO is too dirty to sell on BarrettJackson, they would slap it to the curb, parked with the taxis outside. (i wish it was "yellow jacket" but it is road-grime-cyclone-grey.) |
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Last time .....should I use the specs provide by PEDDLERS SUSPENSION/OR THE DOUBLE SECRET ALIGNMENT SPECS ....given in message #4267 above. NOTE: MY Tire Shop 2005 Pontiac GTO "printout" was the same as given in message#4267..........as Pontiac finally got it RIGHT ? 
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Robert Lutz said the cancellation was result of new 35mpg legislation........................................no new GTO..................................see your car at Barlett-Jackson ...in a few years..................enjoy the car............................................IT IS THE LAST ONE.......... 
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Replying to: mparis1 (Jan 16, 2008 8:42 am) new V8 program cancelled, hey, the current V8 seems awfully nice.
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Replying to: elias (Jan 17, 2008 4:04 pm) What should now do?? 1. Is there a "SECRET" Tech .Service bulletin on GTO tires,I can tell my dealer about? 2. Wheel alignment at dealer? 3. Should I tell the dealer to call" Pontiac" ...asked for Jorge? since i see his name mentionned on various "forums" 4. Tell then to replace "radius rod bushings" ?....since they are known to leak Thanks 
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Replying to: mparis1 (Jan 28, 2008 11:55 am)
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Replying to: ssguy69 (Jan 28, 2008 5:05 pm)
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with the factory 17 settings, the inner edges were destroyed by 14000 miles, almost worn to the belt. with the latest pontiac settings posted 271828 posts ago, the inner edges were over-wornout compared to the rest of the tread after 15k miles, but nowhere near as bad as with the factory settings/tires. even so, to ensure another 10k out of the toyo proxes, i had them rotated side to side (dismounted/remounted/rebalanced.) also the rear tires inner edges get munched just as much as the fronts, if not more, despite very rarely losing traction, really. yes mparis1 this inner-edge tire wear is an inherent issue and the solution is to monitor tire wear very closely and not expect more than 25k out of a set of tires, even with optimal rotations. ps - i've been driving it for most of the winter except during/after the big snowfalls. 20 mpg isn't quite so bad compared to 40 mpg diesel, when 87 octane is 2.97 and diesel is 3.50 . (i think GTO gets equal or better winter mpg with 87 than with premium octane - try it if you are in really cold climates!? same for LS1 & LT1 Z28s...) |
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I'm still alive, just not super enthralled with Edmunds forums these days so I'm not here that often. mparis1, regarding your tires/alignment, strongly suggest you make a trip to a Pedders dealer. Being in NYC my guess is your closest one is Rocksand Racing in NJ. They can do a free 28-point inspection of your car and let you know if you have any failed bushings/components. Suspension is a weak area on our cars, stock. In particular, the fluid-filled radius rod bushings, as well as the stock strut mounts, are weak and should be replaced. Either one of these could cause camber variations, which would make your alignment move all over the place while driving, thus causing irregular wear issues. The rear springs are also subject to sagging (if your car looks like it's riding on top of the rear tires, that's probably the issue). You could push this issue with a Pontiac dealer and try to get either of these items covered under warranty. However, the replacement parts are the same as the stock parts, so you won't really be solving this problem for long. I put ~$1200 into my GTO's suspension back last June (did both front and rear radius rod bushings, inner control arm bushings, front struts, springs, strut mounts and bearings, and rear shocks and springs) and I couldn't be happier with the car. I installed SuperPro bushings, the balance of the parts Pedders, and switched to their Comfort Gas struts and shocks. Not only has the ride quality improved dramatically, so has the handling. There is virtually no body roll, brake pedal and steering feel has improved, and I know I can take corners at speeds 10-15 mph faster than I could before. I used the aggressive Pedders alignment specs http://www.peddersusa.com/images/PDFS/Pedders%20GTO%20Alignment%20Specs.pdf but I'm not seeing any irregular tire wear with a set of takeoff stock 18" Potenza's I installed on my CV8-R wheels. Suspension mods didn't kill my powertrain warranty and are something I can enjoy every time I drive the car (power mods, not as much, though I hope to get headers/catback later this year, as well as do the X-member bushings and install a diff insert and complete the suspension work). Highly recommend this if you love to drive your car aggressively...
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