25th Aug 2007, 22:22

I bought a 99 GT about 4 1/2 years ago for $9,000. It was sporty looking, drove well, and had plenty of power. For 4 1/2 years I drove it putting about 50,000 miles on it, and not much else in terms of upkeep aside from oil changes.

However, last week, while driving back from a long trip, I was traveling along at about 90 mph, and floored the car to get around some traffic. Sadly, that was the last time I'll ever put my foot to the floor in that car. 83,000 miles, and the engine is blown. I'm not very happy about that, but otherwise, it was a great car, except the leaky sunroof.

30th Aug 2007, 21:15

I have a 1999 Grand Prix GT with 194,000 miles on it... bought it a year ago with 180,000, installed cold air intake and have a heavy foot... and I use 89 gasoline and mix in racing octane booster...haven't had any problems in the engine or tranny... struts are starting to go. I love this car so much I'm looking for a supercharged one. would recommend it to any and everyone.

12th Dec 2007, 20:54

I am new to this posting group, but I had to chime in. I have a 1999 GTP. Bought it in 2001 for half of new value ($15,000) with 59,000 miles on it. I now am looking for an a new car... if this one would ever DIE and give me an excuse too!!! I have 230,000+ miles on that darn thing and it runs great! I had the transmission replaced about a month after I bought it under the after market warranty. It was my first automatic and I honestly now think it was just my imagination of a problem. Anyway the things that are bad now are: Heated drvier seat broke, cruise control, windshield wipers don't "seat", heads up display is out and a home repair on the driver master window switch. Yep I am happy! Looking forward to 300,000! I'll have a sign on the side of the road!!!

14th Dec 2007, 22:32

To the original poster...

It's unfortunate you had such bad luck with your car...

Most likely the head gasket was bad when you bought it and you didn't know it... When head gaskets go bad they often "lose" coolant into the oil long before you see any symptoms... Sometimes a head gasket can go bad for months and have no other issues besides needing to add coolant..

As far as the shop "fixing it for free"...the shop only does that for 1 reason... If it is their fault... I don't care how good of friends you are with the owner or who you know... Shops fix cars for free ONLY when it is a comeback.

As far as your misfire it is possible that the shop didn't properly time your engine... the gas mileage would also show that... Or you have a dying MAF or 02 sensor.

Sounds like you got screwed and bought someone else's race car, and took it to a incompetent shop.

4th Oct 2009, 17:20

If they told you the spark plugs were going to cost that much, they ripped you off. The plugs went bad in my Grand Prix GT and I got them repaired for under 50.00, labour included.

31st Jan 2010, 21:36

Been drivin' a company car 99 GP 3.8 (non SC) for ten years. 147k, no tune ups, no engine work, can get up to 30+ mpg on the road. Has not been babied. I have driven the heck out of it. I am a long time MOPAR man and this GP is one tough car. The 3800 is bulletproof.

14th Feb 2010, 16:06

Hey, I have read all your comments, and am still debating buying a 1999 Grand Prix; it will be my second car and has 215k on it... Do you think that it is a good investment? My mom had one and had to replace the muffler twice, but my dad thinks it's a good deal, since the car is only 3k. What do you guys think??

15th Feb 2010, 17:18

Based on the age of the car and the km's, if he won't take 2500 then I would pass on it. There was a engine fire recall on all 3800 engines, expensive to fix, door seal leaks and the GP's burn a fair amount of gas. Use these problems to your advantage in negotiating the price, good luck on whatever you decide..

29th Jan 2011, 18:12

I own a 99 Grand Prix GT 3.800. I've had it for six months, and it has broken on me twice; my alternator and my air compressor. The alternator was ten years old, and time just caught up with it. As far as the compressor; I drove the car from Gary, IN to Pittsburgh, PA, and once I got home, it broke.

Other than that, this is a great fast, fun sexy car. The acceleration is very good considering it takes off quicker than my buddy's 06 Charger RT Hemi; yeah, it really does!! And I only paid 2500 for it. Love the car, would never sell.

16th Mar 2011, 13:12

I bought a Grand Prix GT 4 door black once and I lost it. I just bought another one, but a 1999 GT black. It looks the same. I'm good for the moment. I like the 2007-2008 also, but there's something different about 1999-2001 models.

29th Jun 2011, 19:53

I have owned my GTP 99 for about a year and I love it man!

It is fast, comfortable and just plain not bad. I am not happy with the MPG, but in my defense I can't keep my foot off it. Even at 6'5 I am comfortable in this car. You are reading a post from a suburban owner. I've got 20in rims on it running 245/35/20 on it and man does it run well. No scrapes or tire rubs. I put new struts in the front and spring spacers in the back. People get in the back and still no rubs. Went out of town in it and even at 90 miles an hour the car rode like butter, and still had plenty in the power dept. to pass others uphill.

I love this car and am currently looking for a two door GTP.

18th Feb 2022, 03:25

I have a 1999 Grand Prix GT. It has 208,000 miles on it. It's on its 4th transmission. The original one I had rebuilt, big mistake, lasted 12,000. The next one was a dealer installed rebuilt which lasted about 100,000 miles and the current one a rebuilt has about 40,000. The engine is fine and bullet proof. I will keep driving this car until this transmission or motor give out. The car is very easy to work on and parts are cheap. All the transmissions had their fluid and filter changed at 30,000 mile intervals. I really like the car or I would not have been putting transmissions in it.

I also have a 2001 chevy Monte Carlo with the same 3.8 motor and 4 speed transmission. That car has 48,000 on it. No problems whatsoever except a bad oil sender switch. Same maintenance both cars.