Thread: 2007 gxp

Issues with gxp. Is the dod the afm. The trans temp. It burns oil but that's an ls thing lol gas is gonna be a little lower. 91parkave needs to chime in

like you said, obviously the v8. however it has a way better suspension set up from the factory, top of the line struts, bigger sway bar, and lower by an inch. the tires are staggered sizes. the fronts are 255's and the rears are 225's. bigger brakes and drilled rotors from the factory.
depending on where you are from, look for rust. i know its a 2007, but still. the main issue with these cars is the transmission. when you drive it, make sure it is shifting smoothly and see if you can get it up to operating temperature. make sure the driver information center works (not an issue normally), but it has a temperature gauge for the transmission on it and it shows how hot its getting. make sure the torque converter isnt slipping when going into overdrive at about 45 mph.
good luck and sorry about your wifes accident. glad shes ok.

Comp g or gxp


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GXP or comp g, or any supercharged car all need premium gas. (supercharged would be GTP, or comp G, or 2006+ GT)
"dod" stands for displacement on demand. the car will shut off 4 cylinders while cruising to save fuel.
"afm" is essentially the same thing- it stands for active fuel management.
do you do a lot of city driving? there can be problems with the torque converter because it would be switching from 4 cyl to 8 cyl a lot and that can wear down on the torque converter.
other things the GXP has standard. it has electric heated leather seats with suede inserts and i think all come with an upgraded sound system called the monsoon system.

I would do a trans fluid replacement, add a shift kit, a bottle of Lucas and a trans cooler. To help the trans.

You can also have dod tuned out IIRC

Originally Posted by Below Average Joe

I would do a trans fluid replacement, add a shift kit, a bottle of Lucas and a trans cooler. To help the trans.

Big tranny cooler and a shift kit the trans go one

it all depends on how you drive it too.
its got the same trans except this one is "heavy duty" and it has tapshift. the thing that kills them is the heat. buy a transmission cooler and it should last a while.
you can get a tune to get your dod tuned out, itll keep it in 8 cylinder mode all the time, and i hear that a tune will help you extend the life of your transmission.
overall, i would say there is more of a chance for the transmission going out on the GXP than the other models. some are really lucky some arent, but that goes along with any car on any platform what so ever.
if its JUST reliability you want, maybe go for another GT or a GTP. i think those models are more reliable.
from personal experience, i took a chance and bought a GXP and i still love it. 6 months and no problems.

^^^ ahhh nope same trans. Not heavy duty

I bought an 05 GT and within a few months I had to replace the trans. Bought one from TEP and a cooler to go along with it. We don't beat on it as its my wife's dd/kid hauler. Trans temp would hit 221 and start to slip and hard shift.

Cooler and kit you can do yourself there are two good write ups. Tune I assume you would need to send out for. To overkill or find someone close to you that knew wtf they were doing

Unless you have HPTuners, you will have to have it tuned. Not sure on cost though. Cooler is easy and something you can do. Grab a shift kit from ebay for cheap.

You can get most stuff pretty cheap from Amazon or Ebay, but here is a great place to check out.

http://tripleedgeperformance.com/Home-Page.html

you can find more information on a site dedicated to the LS4 platformed car.
http://www.gmls4.com/index.php/board,14.0.html

and yes, it is an HD trans.