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2004 Grand Prix GTP CompG


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Selling my 2004 Grand Prix GTP CompG. I’m the second owner and I have owned and meticulously maintained this car since March, 2012. I bought it from a dealer auction and it was clear to me that whoever owned it took good care of it, so I jumped on it. Maryland/D.C. car until I brought it to PA last year so it has very little rust and a clean undercarriage for the year. It’s pretty smooth, fast, and runs well apart from needing a new torque converter noted below.

 

High-level details

Orange exterior, black leather interior, sunroof (works), heads-up display, heated seats (works).

 

173k miles, I bought it with 92k and the vast majority of the miles since were driving between D.C. and Ohio/PA for holidays and stuff. 50k of the miles were put on in the last 18 months on a weekly commute to DC from PA. I run 93 octane for best performance, but you don’t have to it runs fine on 87.

 

The car has not been modded -- none of the telltale signs of a modded 3800 are there such as a pulley puller scar.

 

I have kept up on literally everything this car needs maintenance-wise, and lots of things it didn’t but I wanted to keep it at peak performance so I didn’t get stranded on my commutes to DC. A list of nearly everything I’ve done is below, you will not find a better maintained GTP.

 

Comes with two sets of wheels and tires, nearly new Bridgestone Potenza RE970AS Pole Positions on Grand Prix GXP 18’s, and the stock 17” wheels with General Altimax winter tires that maybe have a season left on them. Two extra RE970AS tires are included as well that have about 50% wear.

 

The body is in what I consider fair condition for the year and mileage, save for the bumpers and side mirrors which are scratched due to living in DC and people using other cars as parking way finders. Such is life. Has its share of dings and stuff but it cleans up nice. The plastic covering on the front door window sills is flaking off revealing the chrome underneath (common).

 

Interior is similarly good condition, with only a few minor defects – small tear in the passenger seat, HUD cover is cracked (common).

 

"Mods": HID headlight kit, K&N air filter, 180 degree thermostat, and lowered fan turn on temperatures + fan at key off (it gets hot in DC).

 

Aftermarket speakers + dynamat in the doors (installed by previous owner).

 

Weathertech all-weather mats up front.

 

Inspected in PA until June, 2017.

 

Bad things I know of

Torque converter needs replaced. I have a temporary fix in the engine computer right now to keep the converter from locking which reduces freeway mileage a bit, but it’s time. Takes about 4 hours and a few hundred bucks. If you do it, I'll flash the computer back to having lockup again or you can take to the dealer and have the PCM flashed back there.

 

Sunroof leaks a little in huge rains, which comes out of the overhead lights. Common in the Grand Prix (yes I have cleaned the drains).

 

Heads-up display has the common “broken spring” issue, which can be fixed for nothing with 2 hours of spare time. http://www.atthetipwebs.com/HUD.htm

 

On hills, at very low fuel level, the fuel sender sticks making you think it has more fuel than it really does (hey, I live on a hill). Does not happen on level ground.

 

When taking off from a stop light, there’s a “crunch” which is the fucking motor mounts I just replaced** but you can’t buy quality mounts anymore so I just deal with it.

 

Maintenance history. Everything has been changed with genuine AC Delco (GM) parts where possible and desired:

 

Since I bought it, it has always been oil changed religiously with Mobile 1 synthetic

Rebuilt the transmission completely July 2015, including all upgraded hard parts and extra clutches.

Replaced the climate control unit and radio when I bought it because the buttons were faded (seriously).

Lower intake manifold gaskets upgraded to the aluminum “final” GM spec.

Coolant elbows upgraded to the Dorman aluminum spec .

Plugs and wires at 96k.

Both front wheel bearings with USA-made Timken’s.

All brakes redone with PowerStop rotors and pads and completely flushed brake fluid in April 2015.

The entire suspension including shocks and shock components completely replaced last November with factory FE3 (heavy duty/sport) units, all front end suspension and wear components (tie rods, end links, etc.) replaced with Moog greasable units.

Transmission cooler lines replaced last November (common to leak).

Intermediate steering shaft replaced with a Dorman that doesn’t clunk (common).

Battery and alternator in February this year

Water pump in July this year

AC condenser + recharged the AC in July this year

**Motor mounts in July this year (second set actually since I’ve owned it, they get beat up)

Radiator cap mostly recently in July (have done this twice)

Belts and engine pulleys most recently in July (have done these twice)

Headlights (old ones were foggy)

Locking gas cap

Cabin air filter in July

HVAC blower motor in July

Installed 2006+ rain deflector so the floorboard doesn’t get wet when it rains

Coolant changed every year

Transmission fluid and filter changed every year

 

I’m sure I am forgetting more, but you get the idea… I have kept this car up religiously because I relied on it to perform for me in a high stress job on a long drive every week. Other than the fucking motor mounts crunching and the torque converter needing replaced the car pretty much drives and runs like new. No shit.

 

I’m asking $4000, the car is located in Pittsburgh. You may want to bring a truck when you pick it up, you’ll need it for all the extra parts and stuff I have. But we can probably get it all in the car, because these things are pretty good at tetris with the folding seats and 90-degree open rear doors. But seriously, I have boxes of original components, spark parts, and fluids that go with the car. I think I even have a whole Mobil 1 oil change (oil and filter).

 

I’m reluctantly selling. I don’t really want to get rid of it because I have invested so much and it’s hard to find great beaters in this condition and history. But I just came off spending 18 months driving it long distance every week and I just don’t want to drive it anymore. This car is perfect for a commuter, beater, responsible kid car, spare wife car, etc. Replace the converter and you’re set for 100k more easily.

 

http://www.columbusracing.com/forums/picture.php?albumid=991&pictureid=8729

 

More pictures: http://www.columbusracing.com/forums/album.php?albumid=991

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Well, private party is like $2500 and it still need all that work. Id say youd be lucky to get that from it. Maybe 3 if it were fixed. I know it sucks having put money into it, but thats just my random opinion on it. You very well might just want to hang onto it.....or repair it and make a killing come tax time here shortly....then you might fetch closer to 4.
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Well, private party is like $2500 and it still need all that work. Id say youd be lucky to get that from it. Maybe 3 if it were fixed. I know it sucks having put money into it, but thats just my random opinion on it. You very well might just want to hang onto it.....or repair it and make a killing come tax time here shortly....then you might fetch closer to 4.

 

Good feedback. I decided to price it higher because basically everything mechanical was new, but maybe I value that too highly. The converter is an easy fix, but I was really hoping to avoid taking the time with two little kids, not a lot of free time. Blargh.

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Thanks for the feedback, guys. If anyone is actually interested in the car, PM me. I'll work with you on the price. I'd rather see it go to someone who would appreciate it instead of some yokel from Craigslist.
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