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Pontiac Grand Prix GXP 2006



  • chats1chats1 Posts: 158
    Another thing I thought of last night. Do you know that you don't have a spare in your tire well, but a tire inflation kit? You probably had a spare with your GTP. I actually do have a spare though in my tire well in addition to the tire inflation kit which we put in the rear of the trunk. The reason I have the spare is because I made a big fuss about "no spare" at the dealership so the owner told me that they would get me a GM approved full-size spare for this GXP and squeeze it into the tire well. It's in there because when I picked up the car, I said open the tire well and I saw it squeezed it there. Have no idea if it will fit the front which are 8 inches wide or the rear which are 7, but I'm not worrying about that. If I ever have occasion to use it (and I have never used a spare), if it's not the right size, that is not my problem; it the dealer's because they got the tire for me free of charge and said it would fit. I also had a 2002 GTP which I loved but sold it only because it had 51,000 miles on it and have a long commute to work and I really wanted this GXP.
  • dblducedblduce Posts: 58
    Actually, i had heard that there was no spare tire, i just never really looked. I did notice the other day when i went to get in my GXP, that there is a sticker on the bottom edge of the door sill that states what the tire inflation should be for the front and rear. under the title "Spare", it says "NONE", lol.
  • dblducedblduce Posts: 58
    when i went home for lunch today, i thought id try to see if i could hear if my GXP has the infamous "hissing". i put my ear down to the large speaker in the driver's door when it was opened, and sure enough, i could hear it. thats the first i ever noticed it though, so im not going to worry about it.
  • chats1chats1 Posts: 158
    That's how I found out I had the hissing sound. I said I didn't have it and someone on this forum told me that I did and to put my ear next to the speaker on the door. I did and sure enough, I heard it too.
  • dblducedblduce Posts: 58
    can the hiss be heard in every speaker? ie, passenger side? rear dash?

    one thing i found peculiar is that there is no switch on the door to activate the lighting system inside the car. how does it know when the door is actually opened and/or closed? it sounds to me like it has something to do w/ the lighting system.
  • chats1chats1 Posts: 158
    I didn't listen to the speakers in the rear -- just on the driver's side and the passenger's side and I could hear the hissing which lasts about 15 seconds on both sides, then goes out. when you put your ear near the light in front of the rearview mirror I hear a hiss, but I really don't know if it's coming from that light or the rearview mirror. I can't tell. My brother is the one who insists it's coming from OnStar. I really don't know. I don't know where any light switch is either.
  • ocmike3ocmike3 Posts: 232
    - Sunroof; mine is the same as other GM's I've owned and it operates the same and has about the same noise level. I've never been a sunroof fan, so it really doesn't matter to me. Folks I know who don't like the noise have purchased an add on air deflector that seem to eliminate some of the noise and wind buffeting.
    - I've owned a number of vehicles and several GM vehicles with the auto-climate control same/similar to the one on the GXP. The A/C on my 2005 GXP operates the same as the others. I turn it off it stays off. If in defog/auto it does come on for defogging. Maybe yours ismisprogrammed or out of calibration.
    - I have never noticed the hissing and have tried listening for it. Got the Monsoon, XM & OnStar... I say - just leave the stereo cranked and you'll not be bothered by the hiss. (you'll also go a bit hard of hearing like me.)
  • eagle75eagle75 Posts: 16
    600 miles on the GXP -- so far. so good. A former Trans Am owner posted a few months ago that the GXP is like a FWD 4dr TA. I second that. I owned 6 TA's, and while the GXP is no TA, it has a lot of the same characteristics. Certainly a hoot to drive. And where is the torque steer that some of the magazine reviewers talked about? I feel a little tug now and then--like when going up an on-ramp and I hit a bump--but nothing to get excited about. I have Monsoon and OnStar, but I don't hear any hiss; my AC system operates just like my two prior Bonnevilles, so I'm OK with that; Ray's suggestion on reducing sunroof wind noise works fine; and not having a spare doesn't particularly bother me given that I have never had a catastrophic tire failure over the years--just a handful of slow leaks. All in all, pretty happy at this point. Love the styling, power and that good old V8 sound. My wife has a GTP. She wants a GXP at the earliest possible date--a few more months on the lease.

    On the wheel locks, I may just forget about them and put the original lugs back on. That one lock on each wheel is kind of ugly looking even if the fronts were the proper length. Most people probably wouldn't see them, but I do, especially when I wash the car--which is frequently--and I really don't like the look. Besides, the locks on my wife's GTP have rust in the little grooves, which makes them even more noticeable.

  • guttegutte Posts: 1
    The Red GXP Badge looks great. Where did you get it?
  • eagle75eagle75 Posts: 16
    Billgxp and Gutte: There are lots of graphic overlays for the GXP at GXP Overlays

  • Entering second month with our GXP and it is one truly sweet ride. The only bad thing about it: my wife hogs it most of the time. The car is so mellow when you putter around in it but when you put the hammer down it really is wickedly fast. Now that I've broken our car in, I've noticed mpg have risen and the car is even quicker. Anyway, not much else to report. I give the car a wipe-down....I'm pleased that there are no door dings.

    Nothing more to report. I find myself looking for errands to run late at night just to drive the thing...
  • chats1chats1 Posts: 158
    Gee, we haven't heard from you all week. It's been quite a dull week. You entertained us quite a bit last week. I hope you didn't drive drunk to the Cape at 100 miles an hour. Is that why we're not hearing anymore about your ac problem? The cops got you?? All kidding aside, I was wondering how you made out with the killer switch and also, hope you're not fed up with the kidding and this forum. Chats1
  • gxpjoeypgxpjoeyp Posts: 38
    I want to propose a toast to all the 2006 grand prix gxp owners: May you love your gxp as if it were your last car you would own,cherish every riding moment,blast the tunes like you wanna go deaf and put the pedal to the metal if you damn well feel like it!!! Its friday everyone enjoy your weekend!!!
  • ocmike3ocmike3 Posts: 232
    Can the 2000 or so of us that got the 2005 GXP's also toast?
    Loving mine :shades:
  • gxpjoeypgxpjoeyp Posts: 38
  • It's Sunday night...late, and I'm almost toast, but I'll raise a glass of 91 octaine to ya'all....
    This car has been a hoot. People sure check me out when I drive easy down the road.....they come up, go by, slow down...a GP with a v8 and four fat pipes out the butt??? They're rare, and fun...and, I gotta go to bed...
  • rmozolrmozol Posts: 124
    Yeah, I like it when they look at the calipers and rotors and ask where I bought them. I tell them Pontiac, of course. Speaking of which, I've emailed a few places about cleaner pads. Anyone else look into this yet?
  • dblducedblduce Posts: 58
    Has anyone ever tried using the octane booster/additives to this car? Im figuring for the price of gas the way it is, wouldnt it be cheaper to fill up with 87 octane, and add a bottle of octane booster instead of using 91 or 93 octane?

    Ive actually been filling up with 87 octane since last fall, and my GXP still runs great.

    I highly recommend the K&N air filter for the GXP. The exhaust sounds so much better, and the throttle response is crisper with it.
  • A month or so ago, i purchased a K & N ait filter for my gxp, and it's made absolutely no differance on sound, fuel mileage, throttle response. If any one out there is looking for the best deal anywhere on a used gxp, check out the black gxp with 1400 miles on it. this is the best dealer for prices on any used car ive ever found. Killer deals on cadillacs too.
  • gxpjoeypgxpjoeyp Posts: 38
    Hi all my fellow gp gxpers,i have a question,i have read on 2 diffrent websites that the top speed is 138 governed and also 143 governed,which one is correct or are they both wrong....shhhh im tempted :confuse:
  • rmozolrmozol Posts: 124
    I've e-mailed the Pontiac site a few times, but they never have an answer. I don't think they know, personally. The fact that these have "W" rated tires, good for sustained speeds up to 168 MPH, is a little strange, if the speed is limted that low. Why not just stick a "H" or "V" rated, and be done with it? I'm guessing that these have the power to pull these to beyond 150, which is where most U.S. cars used to be limited at. I see even Chrysler has gone beyond that with the SRT-8's.
  • I've seen legit video of the car going 140+. Have yet to take mine out....yet.
  • dblducedblduce Posts: 58
    Ive had mine up to at least 100 mph on a few occasions. It didnt take very long at all before i realized i was at that speed. One of those times was just messing around, and i only had the pedal about halfway down to get there, so im sure they would have no problem reaching at least 140.
  • I've seen conflicting stuff on the top end. I've read where the car's computer limits top speed if tranny heat is an issue...and I've seen different figures: 143, 146...I know one of the motor mags did a test of the impala ss with the same engine and they found it went over 150. I'd be curious what the car will do on a cool day. The engine and gearing seem right to run in the mid-150s, and the car is certainly slippery enough to do it.
    Someone out there take this car to Bonneville and see what it will do :shades:
  • rayainswrayainsw Posts: 2,954
    One thing that I have found frustrating about GM is that even when I am trying to help THEM, my sense is that many at GM do not really care. At least not enough to actually do something.

    One non-GXP example:

    Heck, I have now personally contacted GM twice regarding incorrect EPA ratings for the STS-v listed at this GMBuyPower url: eId=006&identifyThumbnail=showAllMake&

    Still incorrect. (sigh.)

    Back to the GXP.

    While I really like my 2005 GXP, and admire the effort it must have taken (and $$s) for Pontiac \ GM to bring such a niche vehicle to market in these times, I am absolutely astounded that for 2006 they added no additional refinements and actually de-contented the GXP slightly:

    At least 2 reasons that I like my 2005 better than the 2006 (interior) are:
    1 - My understanding is that for 2006 they reverted to the GM corporate cruise control stalk. I like and appreciate the separate control on my 2005.
    2 - And they removed the up \ down movement of the driver's seat lumbar support adjustment for 2006.
    On long trips, I use that - a lot.
    ( Old decrepit back - sigh )

    From a product and from a competitive standpoint I actually expected that Pontiac would do something to further enhance the 2006. One possible example that would have been relatively inexpensive (since I believe that it would only involve software upgrades) to implement is a “rev match on downshift”. Since the TBW is already there, the issue would seem to be one of integration between downshift command (manual \ TapShift generated) and coordination between the PCM and TBW to achieve an appropriate amount of “throttle blip” based on the current RPM and calculated \ expected RPM after shift execution. To smooth the transition.

    Again, this would require no additional hardware components – and achieve an additional measure of driving refinement. ( This works quite effectively in the Infiniti M45 Sports I have driven on occasion. )

    Just my .02 gallons worth . .
    - Ray
    13,000+ miles and many, many smiles . . .
    2016 BMW 340i
  • bubbaman999bubbaman999 Posts: 54
    Ray's recent message got me thinking,

    2 - And they removed the up \ down movement of the driver's seat lumbar support adjustment for 2006.
    On long trips, I use that - a lot.
    ( Old decrepit back - sigh )

    What do you think the average age of the GP GXP buyer is?

    Late 40ish/Early 50s

    Food for thought,
  • billgxpbillgxp Posts: 13
    Any fellow GXPers out there live in the vacinity of Englishtown Raceway Park in NJ? They are holding the annual Pontiac Show & Go this Saturday. Typically includes a cruise style display of Pontiacs and drag racing of street muffled vehicles. Details are available at Anyone planning to attend and show their GXP? Might there be a small contingent of GXP's to attract attention?

  • gxp4megxp4me Posts: 7
    Ahh, I hope that estimate you made is slightly off otherwise I may have just become my parents! ;) LOL :P

    I am a PROUD GXP owner and I am 24 ... I will be 25 this September.

  • dblducedblduce Posts: 58
    I just turned 35, and bought my 05 GXP last june. This is the 4th Pontiac Grand Prix I've owned. I bought my first one in 1993, when I was 22. I made the car payments and insurance payments all by myself, only had my dad co-sign for the loan.

    There are too many teens out there today that dont know the value of a dollar, esp. if they dont have to earn it themselves. I think a lot more parents should make it a requirement that their kids at least pay some portion of a vehicle if they want one bad enough.

    I was 17 when i bought my first vehicle. it was in 1988, and it was a full frame-off restored 1965 chevy pickup, customized with a nice 350 cid, AT, wooden bed, etc. I bought it at a car swap meet for $7,000. My dad paid the owner for it, but i repaid him every penny over 3 years. He didnt charge me interest, but at least i appreciated and took care of the vehicle more, knowing that it was mine, and everything that went into it i had to make the money for. he owned 2 gas stations, but i still had to pay for my own gas. im thankful i learned about purchasing, and the upkeep of cars that way. it makes owning your own much more fun.
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