View Full Version : Just purchased an 05 GP GXP my


Aaron Arceneaux
06-16-2012, 12:03 AM
I bought my GXP two days ago with 49k miles. I am new to LS4 and have been doin some research. I have a few questions after I popped the hood and was amazed my "future" mod list was there already.

It has DT Headers, Intense CAI, no cats with stock mufflers and resonator. I think It has a shift kit since the shifts are comparable to my silverado with a vette servo.

My questions:

Is it tuned already since there are no CEL and idles nearly perfect?

I am almost positive I don't have a LS4 TB. It looks just like the one that was on my 4.8 silverado (LS1 Style) I have pics posted up soon.

One thing I can say is that it pulls way harder than my bolt-on tuned 265whp Altima 3.5 that I sold to buy this beast.

sway99bird
06-16-2012, 12:33 AM
From what I hear your future mod will be a transmission but GL and post pics when you get a chance !

crazyjoe
06-16-2012, 10:38 AM
Is it dark cherry metallic by chance?? Quite possibly is my old car. If so, you also have an LS1 intake, lowering springs, and yes it has been tuned but no shift-kit. Where did you buy the car from?? I'm guessing from the mileage and mods, it's my old car. LS4 emblem on the trunk?

http://i73.photobucket.com/albums/i234/bighink/076.jpg
http://i73.photobucket.com/albums/i234/bighink/065.jpg

Look familiar???

Joe.

TheMonteMan
06-16-2012, 10:55 AM
post pics when you get a chance. it may pull way harder than your altima because of the huge torque difference between that 3.5 and the ls4.

06MonteSS
06-16-2012, 12:59 PM
if it has the headers and no cats and you're not getting a CEL, then yes, it's been tuned...

Aaron Arceneaux
06-16-2012, 06:09 PM
Is it dark cherry metallic by chance?? Quite possibly is my old car. If so, you also have an LS1 intake, lowering springs, and yes it has been tuned but no shift-kit. Where did you buy the car from?? I'm guessing from the mileage and mods, it's my old car. LS4 emblem on the trunk?

http://i73.photobucket.com/albums/i234/bighink/076.jpg
http://i73.photobucket.com/albums/i234/bighink/065.jpg

Look familiar???

Joe.

HOLY SHIT!!!!!!! That's it lol I bought it from TexasDirect in Stafford,TX.

This is it but I paid a whole lot less http://houston.craigslist.org/ctd/3076413041.html

neilownz
06-16-2012, 06:35 PM
Pretty much any ls4 with dt headers is/was a member here.

crazyjoe
06-16-2012, 06:51 PM
Hahaha, I love it! I ever wondered if it would show up on here, I'm glad it did! She's a long way from home now, Texas!!! Wow!

I replied to your PM as well, any other questions feel free to ask!

Sadden
06-16-2012, 10:37 PM
Its , funny , as soon as he mentioned the mod list the first thought to come to my mind was if it was your car.

I love that CAR!

ryans06gxp
06-17-2012, 12:49 AM
Aaron,

Atleast he admitted that it was his.....I've been trying for 6 mos to find my former owner and nobody will buck up and admit it. Mines dark cherry and modded before I got it too. Now it has a new trans and ready to go. Good luck with her and enjoy it.

Sadden
06-17-2012, 04:12 AM
There have been quite a few members ditching rides , post up a mod list and some pictures. someone might recognize it.

neilownz
06-17-2012, 10:16 AM
If it has headers look up the group buy threads.

Aaron Arceneaux
06-17-2012, 10:21 AM
All washed, waxed and repolished the tips and wheels. I love it!! My future mods are shift kit, trans cooler and retune.
Already added my BLOX filter with velocity stack.

http://s15.postimage.org/a9ojjb793/2012_06_17_09_15_47.jpg (http://postimage.org/image/a9ojjb793/)

http://s15.postimage.org/hsca5onzr/2012_06_17_09_16_13.jpg (http://postimage.org/image/hsca5onzr/)

ImpSS07
06-17-2012, 07:25 PM
So you bought it in Stafford huh? Do you live in the area? I'm not too far away in Pearland, it would be nice to meet another local LS4 person.

DavidGXP
06-17-2012, 10:23 PM
I still love that color.

jsmith309
06-18-2012, 12:43 PM
I have an 06. 120k. I've have it 25 days and fixed several things on it. Enjoy it while it lasts. Not very durable. Well, at least mine is a damned lemon

The_Madcat
06-18-2012, 04:27 PM
120k miles though, that gives plenty of time for abuse from the previous owner(s). Lemons will normally have issues way before 120k.

TheMonteMan
06-18-2012, 08:15 PM
agreed^^^. thats a good amount of mileage. what did you pay for it if you dont mind me asking.

gxp-miller-gxp
06-19-2012, 03:02 PM
thats pretty awesome that happend, and you got well over 1,000 in mods.
800 ish for headers
200 at the least for tune
probably at least 500 all together for ls1 intake set up

i live in louisiana and you really should get a trans cooler as well as a shift kit, its not hard to check either. and its easy to do if you have the pan already dropped. at 50 thousands miles though now is the perfect time to change out the trans fluid

JessmoMonteSS
06-19-2012, 03:51 PM
God dayum I love that color! What a small world. You picked up a sweet ride, especially with the mods it already has. I agree with GXP-miller....trans cooler and shift kit are much needed and you'll be really happy with the improvement in your shifts. Congrats and welcome to the boards.

blkchevyz
06-19-2012, 04:05 PM
what springs are on it? its got a perfect stance.

jasongantt
06-19-2012, 04:25 PM
i bought one when they first came out....it was a beast but every once in a while, the car would just shut off while driving. dealer couldn't figure it out, so i sold it before it hit 5000 miles.

crazyjoe
06-19-2012, 04:38 PM
what springs are on it? its got a perfect stance.

Canuck Motorsport/SSC springs, 1.7" on all 4 corners.

And for what it's worth I was able to do the LS1 swap on the cheap. Intake was given to me, my buddy had an extra tray that we were able to mod and not lose any down time, the only cash I had in the swap was the throttle-body adapter. :)

Aaron Arceneaux
06-21-2012, 05:35 PM
Thanks guys for the warm welcome...I've been looking at the Thrasher shift kit and Hayden OC-1404 cooler. I live in Port Arthur,Texas which is about 2.5 hr drive from Stafford! I just got the windows re-tinted 25% in front and limo in rear makes me look gangster lol Also I'll be going by Flaco to get it tuned for the LS1 intake...should I port the TB or leave it alone?

Jay z28
06-21-2012, 06:33 PM
lol small world.

On another note. I wish someone would have spent the money to mod the one I hadbefore I bought it! Haha

Aaron Arceneaux
06-25-2012, 06:22 PM
Got pulled over today lol The officer was nice and realized that I got a little too happy with my new car. He let me off with a warning :thumb:

Took him 2min later too catch up after I park smh!!

http://s7.postimage.org/9flw75azr/403892_356608807745385_2090522692_n.jpg (http://postimage.org/image/9flw75azr/)

http://s7.postimage.org/blg71neg7/563419_356617214411211_1907379462_n.jpg (http://postimage.org/image/blg71neg7/)

neilownz
06-25-2012, 09:04 PM
Maybe just because you have a temp tag.

TAZDEVILGXP
07-02-2012, 12:03 AM
new to this site, just purchased a 05 gxp and in the past month (after the 3rd day ) its been cutting out on me. says accelorator pedal assembly sensor, p2138, 2128, 2122 I have had it at the dealers now 6 times they have replaced the pedal assembly sensor, drove it out of the driveway (after they said it was fixed) and it cut out reduction power again. they now have this car (which is my baby ) color dark cherry with all the extras. they cannot find the problem with this electrical situation. now going on day 6 of being there, thanks god the dealership is taking care of me on this. But now says if they cant get it right then I need to trade it back in. I dont want to trade it back in does any one have any ideas whats causing this to continue to do this. when this has occured I pulled the circuit connector on the strutt mount (throttle connector) aired it out plugged it back and in and bam runs god for a day or 2 then cuts right back out. please help me with this matter. I dont want to give the car back. I LOVE THIS GXP thanks

neilownz
07-02-2012, 02:12 AM
Start a new thread.

TAZDEVILGXP
07-03-2012, 11:50 PM
im good they finally fixed the thing as i was getting ready to turn it back in to them as a lemon

Aaron Arceneaux
07-16-2012, 10:17 PM
Got the cooler and Intense shift kit installed. Had to cut one of the longer brass bushings to create the two smaller bushings that Intense forgot some how smdh. I can say that the shift quality is a major difference and little to almost no time between shifts (nice and firm).I guess because it's 90 degrees out here and humid that's why my temp is still around the 190 area.

Aaron Arceneaux
07-16-2012, 10:56 PM
Also the cooler is bypassed from the factory radiator.

baltsk8er69
07-17-2012, 09:09 AM
That's incorrect. The cooler needs to be in conjunction with the factory cooler. You will not cool the fluid enough bypassing the stock cooler.

The_Madcat
07-17-2012, 10:44 AM
That's incorrect. The cooler needs to be in conjunction with the factory cooler. You will not cool the fluid enough bypassing the stock cooler.

Bypassing the stock radiator cooler is the only way to go in my opinion. Why reheat the fluid by putting it in the radiator cooler?

I was on the fence about this prior to getting one myself. Logically, bypassing makes the only sense. The radiator has engine coolant in it that is ~200 degrees, heating up the rest of the radiator, including the trans cooler section. By using the radiator, you are heating the fluid up to engine coolant temps and then cooling it using the additional cooler. If you bypass, you are just cooling the fluid. Also, if you have had trans issues you could have bits and pieces of broken trans components contaminating the radiator section. You can flush it but it's not going to clean that cooler 100%.

Since swapping over to a standalone cooler, my trans has yet to approach the hot temps it used to get. I don't think I could recommend using the radiator cooler if you are going to the trouble of installing an additional cooler, you might as well do it proper.

My stand alone cooler is a 20,000 btu cooler. I live in the south end of Wisconsin so if you have higher average temps, a slightly larger cooler might be needed. After I had it installed, I drove around the outskirts of Chicago, got caught in bumper to bumper for ~2 hours. It was ~85 degrees out and no airflow, trans sat content at 170-180 degrees. Just the day before the install I drove the same road, did not get caught in traffic and same temps/airflow - 205 degrees using the stock cooler. If I had to sit in traffic I am sure it would have hit 220.

Aaron Arceneaux
07-17-2012, 02:17 PM
I have a 22000GVW cooler. Does it matter how it is mounted on the radiator? I have mine vertically mounted instead of horizontal because I couldn't to fit behind the core support(I think that's what it is)

The_Madcat
07-17-2012, 03:13 PM
Depends on the cooler itself. Most of the ones I have seen need to be mounted in a particular way. The one I have is mounted horizontally in front of the radiator, I believe the input/output connections are at the topside. I would have to look again to be positive (Dave @ TEP installed mine). I check the connections for leaks at oil change intervals so I'll have it uncovered enough to verify that for you. It will be 2 weeks before I do the change though.

4GWS6
07-18-2012, 04:15 PM
I have an 06. 120k. I've have it 25 days and fixed several things on it. Enjoy it while it lasts. Not very durable. Well, at least mine is a damned lemon

sounds like my 05 Comp G GTP,but i got it from a young douche bag LoL!