Thread: Want to get a Grand Pix GXP. ( Need opionions)

Originally Posted by marines542

yea the impalas have same size tires all the way around. i would switch impala ss and gp gxp personally but thats just me. the shift kits only cost 90 bucks and are easy to put in. its literally unbolt a few bolts drop the tranny pan. then unbolt a couple more bolts...drop the accumulator. then pull it apart put new springs and seals in put it all back together. and no the air box's arenot the same as i had an 04 gp and there is small differences. and personally i prefer spectra filters over k&n just because you dont gotta oil them and their cheaper. there are new headers in progress of being made that will be strictly bolt on for 350 buck then do 3 inch exhaust from there. im slowly but surly working on modding mine but its a really slow process

Ya i agree i would switch the two around because i dont have to worry about the tires but i thought i did, guess i did not pay attention. Well if they are not the same then ill just use it some how to make a good CAI if not then maybe just buy one Made or do a complete custom one.

Seems pretty simple to do but i got to get the car raised up tough, if anything ill possibly do that shift kit and Air intake only. Then Later on see if i want to do headers and stuff. BTW the Intake itself will be a good increase in power right? If so i just do that and the shift kit and the trans cooler and then that's it, that on the impala if i get the GXP then add getting same tires on the list and thats all the mods. Its going to be a DD so i dont want later on like after 90k or 100k miles later for it to become a money pit like our other 07 GP base did.

Hey thanks again Marines542 and the rest of ya guys for all you help, If and when i get the GXP im sure you guys can help me out with the GXP or SS which ever one i get lucky with. OR if i get really really luck and find a S/C GP or Impala then hey i dont have to worry about all that stuff and just do intake, exhuast and tune and there ya go a good DD right there. But i got to get lucky and find one around here. been looking for one within 200miles and under 13k with less than 70k miles but no luck. Soon though Soon, Thank you all again i really Appreciate the help.

Trans cooler as previously mentioned. Get the 18x8/255 all around. Don't skimp on rubber as the performance is similar to a 3.2 pulley GTP.

tune is prob not a bad idea either.

Originally Posted by Tuner-Extraordinaire

tune is prob not a bad idea either.

O yes and that. Overkill does the best canned tune as I am waiting for mine

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Ok so even if i just put a CAI and that"s it or no mods at all will the Tranny still go bad or i need a rebuild after the 90,xxx miles you said about? Even with the way i drive that i mentioned a little bit before? Oh and with a trans cooler and shift kit and no other mods will my tranny last longer than say 120,xxx miles before needing a rebuild? again making it a DD so i dont want to put so much money in into it.

Ya thanks for tip Tuner, i know i wont go cheap on the tires that and brakes you dont go cheap on at all. Also if the tranny can handle it i would get possibly the Cooler, Shift kit, CAI, and then a tune, would all that be fine for tranny past 100,xxx miles?

Other than the tranny problems everything else should be fine on the GXP/SS Right, and not need to constantly be putting money into it to fix everything that breaks? Also the GXP is a fine car as a DD right? And if it is then thats great and i will diffidently be looking for the S/C GP or Impala first before the GXP/SS, and if i can find the S/C then ill get the V8 one. Only if the V8 one is reliable.

Any other GXP/SS owners i will appreciate your opinions too and thanks to everyone else that helped i think im sold on the GXP but the tranny problems is what is stopping me in being 100% sold.

You seem to worry too much about a trans issue.

Every single one of us can have a trans problem, they are pretty much all the same. I am rocking a stock trans with 126k, I beat on it from time to time, when it dies it dies. No-one can tell you that its going to last 5 miles or 150,000 miles. I've seen many GXP's, SS, buicks etc go 140K+ on the stock trans. You pretty much just have to buy one and drive it till it dies, who knows how long it will take.

As stated the impala SS uses the same size wheel and tires all around. The GXP had larger wheels in the front to accomodate the torque steer. But you can run the same size tire all around. I have also seen some GXP owners run the 18x8's all around which looks really good.The GXP also got the larger brakes and all of the suspension goodies of the LS4 bunch, other than the Lacrosse Super. Cal Speed performance is working on a releasing their set of headers which are supposed to be cheaper in price. Doug Thorley is currently running a special price over on ls1tech for becoming a vendor over there.

A shift kit is easy to install. I see you are in anahiem. You could always have a mod day to get us So Cal guys together.

Originally Posted by Fivefingerdeathpunch

You seem to worry too much about a trans issue.

Every single one of us can have a trans problem, they are pretty much all the same. I am rocking a stock trans with 126k, I beat on it from time to time, when it dies it dies. No-one can tell you that its going to last 5 miles or 150,000 miles. I've seen many GXP's, SS, buicks etc go 140K+ on the stock trans. You pretty much just have to buy one and drive it till it dies, who knows how long it will take.

Your right i am worrying very badly on that issue but ya i guess your right when it dies it dies ill see what happened. You say lots of people have had their trans run that long so i guess mine can too as long as i dont beat on it a lot and but one that is in good condition and not abused. thanks again you helped me a lot an now i am sold on the GP GXP/ Impala SS, now if i cant find a GTP/SS S/C then ill get the GXP/SS.

The Guz ya thanks for the info, thats good to know when i go look for a GXP and i think i will run 18x8 if i get the car. Ya ill keep that in mind to have a Mod day here at So Cal with all you guys, that can be very helpful and funner and less expensive. I think.

Thanks all you guys for the help i think i got enough opinions on the GXP that i will want one. BUT more opinions will be appreciated by other GXP/SS owners, the more the better and great to hear about other stuff about the GXP/SS and learning new things. Thanks again

Hey guys i got another question, First off our SUV need some maintenance so it was at the dealers and we rented a Impala LT 2013 for the weekend. let me tell you if this Impala is like the 06-08 SS with the V8 then hey it will haul ass. This rent a car has a 3.6L Direct injected VVT V6 with 300HP, and this thing hauls ass. For a 2013 model it looks pretty darn good but the there are thing wrond with it like the back seats are not that spacious, the side rear view mirrors are Puny. The mirrors are so tiny and the car is so low to the floor, i remember our base GP was a little higher than this. The steering sucks at low speeds and is very hard too. But the Impala is fast thats for sure, i see that this impala is like a preview of what the LS4 SS impala or GXP will be.

But to get to my question is i want a GTP or S/C SS more than the GXP, but i would like to know would the Tranny be more better in the GTP than the GXP since it has less HP? Also can the GTP be AS fast as the GXP with some mods and hurt the tranny less than the GXP would? I know they have the same tranny but would the GTP/ SS S/C be better to the tranny than the GXP? Would it last longer on the GTP than it would on the GXP.

Also what is the highest mileage you guys would recommend when looking for the GTP/SS? I think 70k would be ok and then no more higher than that? And would the CAI make a noticeable difference in the GTP than it would on the GXP since of that S/C?

Thanks again in advance.

Originally Posted by SF9777

Hey guys i got another question, First off our SUV need some maintenance so it was at the dealers and we rented a Impala LT 2013 for the weekend. let me tell you if this Impala is like the 06-08 SS with the V8 then hey it will haul ass. This rent a car has a 3.6L Direct injected VVT V6 with 300HP, and this thing hauls ass. For a 2013 model it looks pretty darn good but the there are thing wrond with it like the back seats are not that spacious, the side rear view mirrors are Puny. The mirrors are so tiny and the car is so low to the floor, i remember our base GP was a little higher than this. The steering sucks at low speeds and is very hard too. But the Impala is fast thats for sure, i see that this impala is like a preview of what the LS4 SS impala or GXP will be.

But to get to my question is i want a GTP or S/C SS more than the GXP, but i would like to know would the Tranny be more better in the GTP than the GXP since it has less HP? Also can the GTP be AS fast as the GXP with some mods and hurt the tranny less than the GXP would? I know they have the same tranny but would the GTP/ SS S/C be better to the tranny than the GXP? Would it last longer on the GTP than it would on the GXP.

Also what is the highest mileage you guys would recommend when looking for the GTP/SS? I think 70k would be ok and then no more higher than that? And would the CAI make a noticeable difference in the GTP than it would on the GXP since of that S/C?

Thanks again in advance.

I would assume that the tranny would be better off in an SC engine over gxp just for simple fact that it has no where near as much torque which is part of what destroys the gxp and impala as tranny. And the ls4 has tons of heat which it just shi*s on the tranny with.
And from reading on here u can easily make a gtp faster than a gxp just cause the gxp weighs so dang much and costs so much to mod. The SC motors from what I've read are also easier to mod.
As for mileage when buying used I personally don't like to buy one with more than 50xxx unless I buy from a private seller and get a good deal

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Originally Posted by marines542

I would assume that the tranny would be better off in an SC engine over gxp just for simple fact that it has no where near as much torque which is part of what destroys the gxp and impala as tranny. And the ls4 has tons of heat which it just shi*s on the tranny with.
And from reading on here u can easily make a gtp faster than a gxp just cause the gxp weighs so dang much and costs so much to mod. The SC motors from what I've read are also easier to mod.
As for mileage when buying used I personally don't like to buy one with more than 50xxx unless I buy from a private seller and get a good deal

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Ok so i would not need a trans cooler for the GTP, but would a shift kit help?

I will only buy from a dealer, how would i know if the GTP is in a good condition. What should i look for? I know i saw a thread on here that could answer that but i could not find it and i think its for the 97-03 GTP and i want the 04+.

So you think no more 70k is ok, if its in good condition from the dealer AND if they give me some good Warranty's? Can you guys List some warranty's that would be good for the GTP, i know this one guy online had a impala SS a 2007 and had a warranty for his car that was for the tranny which sounds good to have with that weak tranny. I think he got it rebuild by paying just his deductible which was like 300$.

Hey also ive been looking on the thread on how to do a retrofit for the 04+ GP, i want to know is it easy to do and not that costly? like can it be done for like under 400$? I got my GPs old headlights so i could use them. I saw what the output looks like on a retrofit headlight and it got me hooked on good.

No need for a trans cooler for a GTP that's more of a requirement w/ the Gxp because they seem to enjoy heat.

I would do a shift kit with either.

They improved most of the common issues with the previous generation. Check the headliner for any sort of water stains..the onstar antenna likes to leak..very easy fix though. Check to make sure the lim gasket are aluminum and not plastic. Check the passenger floorboard for any water (another easy fix) the air duct deflector where the cabin air filter is tends to be crappy and leak when it rains (cheap/easy fix). Make sure the trans isn't slipping and check for typical rust underneath the car and the rear struts just like you would any car.

GTP can be just as fast is faster then GXP with a couple simple bolt ons.

Thanks, ill make sure to look for those especially the LIM gaskets as that was a pain when it got shot in my last GP.

Hey it looks like if i dont get the GXP, im thinking of the 97-03 GTP instead of the 04+ because they will be a lot cheaper. So i want to know, are they pretty reliable too like the engine is pretty good and well what is the difference in the Series II vs the Series III? Also is the older GTP better to work on/fix and has more parts, both Aftermarket and maintenance parts?

I know im like changing my mind a bunch of times but i just want to know since im now getting doubt about being able to get the GXP so know im looking at the GTP mainly the 97-03 because they will be cheaper and more affordable too. They are also great DD and will the trans me better in that GTP than the 04+ since they have a little less Torque and HP? Also could that GTP be faster than the 04+ since of the weight difference?

Thanks for all the answser i knows so much more than i did before and ill be researching more on the GTP so i know which one i can get and ill know what to look at on the GTP so i know its in a good condition. Thanks to all of ya again.

Its the al block that transfers heat to the trans easier. same trans except for starter mount location.

Originally Posted by SF9777

Thanks, ill make sure to look for those especially the LIM gaskets as that was a pain when it got shot in my last GP.

Hey it looks like if i dont get the GXP, im thinking of the 97-03 GTP instead of the 04+ because they will be a lot cheaper. So i want to know, are they pretty reliable too like the engine is pretty good and well what is the difference in the Series II vs the Series III? Also is the older GTP better to work on/fix and has more parts, both Aftermarket and maintenance parts?

I know im like changing my mind a bunch of times but i just want to know since im now getting doubt about being able to get the GXP so know im looking at the GTP mainly the 97-03 because they will be cheaper and more affordable too. They are also great DD and will the trans me better in that GTP than the 04+ since they have a little less Torque and HP? Also could that GTP be faster than the 04+ since of the weight difference?

Thanks for all the answser i knows so much more than i did before and ill be researching more on the GTP so i know which one i can get and ill know what to look at on the GTP so i know its in a good condition. Thanks to all of ya again.

An L67 is just dependable as an L32. The L32 got the Gen 5 blower which is more efficient. The trasmission is the same between the 98-03's and the 04+ so expect the same issues if you beat on it constantly. The 97's have a different trans among some other slight differences. The 03's are also different. The aftermarket is the same for both and both can make about the same amount of power. All maintenance parts are the same other than some slight suspesnion changes on the 04-05's.

Originally Posted by The Guz

An L67 is just dependable as an L32. The L32 got the Gen 5 blower which is more efficient. The trasmission is the same between the 98-03's and the 04+ so expect the same issues if you beat on it constantly. The 97's have a different trans among some other slight differences. The 03's are also different. The aftermarket is the same for both and both can make about the same amount of power. All maintenance parts are the same other than some slight suspesnion changes on the 04-05's.

Thanks you answered everything, and i see your sig you got a 99 GT what ar eyour opinions on it? Like do you like the interior and the looks of that body style?

Any of you guys that have the 97-03 style GTP, what do you guys like about it and is it a great DD car?

Originally Posted by SF9777

Thanks you answered everything, and i see your sig you got a 99 GT what ar eyour opinions on it? Like do you like the interior and the looks of that body style?

Any of you guys that have the 97-03 style GTP, what do you guys like about it and is it a great DD car?

I have an 06 but have test driven a few older ones...a 98 and an 00. Personally I like they way they look but at the time I was thinking about having to fix em when they brake. Well turns out doesn't matter the year they all need work. I've spent 2000 in parts on mine and that was stuff like cv half shafts ( and now drivers side needs replacing) hubs tie rods rack and pinion PS pump and all the lines so on so forth. So if I could go again id probably would if got the gtp I test drove. Just cause I wanna learn to mod. And don't get me wrong I do still love my GXP and aren't planning to get rid of it

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Thanks, i just forgot to mention about the buick regal GS too, they are pretty much teh same as the S/C GTP and impala just a differ body right? Its hard to find the older GTPs so I think i might get whatever i find between these cars:
Buick Regal GS 97+ or GP GTP 97+
Impala SS 04+ or Bonneville SSEi 97+

You guys think all those cars ^^^ are great DD, fast, reliable, and just good cars better than crap corollas or honda's and etc?