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  1. #1 Rust Issues 
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    Hi guys,

    I'm sure you've have had a few of these threads. I'm including pics so that hopefully it helps to see how bad (or not) the problem is. I am trying to figure out whether I should have the rust dealt with. Here is what is rusting:


    • Rocker Panels - I understand this is very common. I knew it when my passenger side panel started rusting about 6-7 years ago and I saw all the other GPs on the road with the same issue. The driver side panel held up well, but it's starting to rust now too. I had the passenger side panel cut out and replaced five years ago and it is now starting to rust as well. The body shop told me they had to fabricate a new rocker themselves because none were available for the GP unless I bought a new set of doors, and that was expensive! I'm kind of doubting this now, as I see by reading this forum that you can buy these things on eBay. And that's why I registered, to get some opinions on whether I should even bother. Cost of that repair was $800. Well worth it for the last five years of mostly no visible rust. I'd hate to see what that panel would look like today if I didn't have this done. What do you think I'd be looking at cost wise to do the same today if I bought the panels on ebay and had a body shop do the work? Looking at the car, it looks like there is some rust on the door and rocker panel cover too.
    • Gas tank door - I see from the common problems thread that this is also a bit of a known issue. I have a spot of rust under my door. It seems to be spreading slowly, or even not at all. Is there an easy way for a body shop to take care of this?


    The car is a '97 with 230km on it. Great car, fun to drive. Wish it didn't have rust.







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  2. #2 Re: Rust Issues 
    I live here. brandonl2000's Avatar
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    Not to get off topic, but where did you get those mud flaps? Can't find any like that anymore. And I'm curious to see pics of the rust under the gas door..
    2003 Grand Prix GTP-3.5 setup, sold it, miss it
    2002 Grand Prix GT-top swap, GT1 Cam, SD Headers, 90# springs, 42.5 injectors, 3.4 pulley - sold
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  3. #3 Re: Rust Issues 
    Poppin 'em thangs mechguy's Avatar
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    It's Canada. Rust is living the high life. It's not economically wise to spend that on rust repair on a 1997 Grand Prix though. That would be murdering good money.
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  4. #4 Re: Rust Issues 
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    Quote Originally Posted by brandonl2000 View Post
    Not to get off topic, but where did you get those mud flaps? Can't find any like that anymore. And I'm curious to see pics of the rust under the gas door..
    Yeah, I didn't think to take a pic of that at the time. I'll take a pic of that this week.

    The mud flaps were purchased at a Pontiac dealer, at the same time I had the rocker fixed. The body shop was kind enough to install them for me. Just had to have them!
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  5. #5 Re: Rust Issues 
    I live here. brandonl2000's Avatar
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    *In reply to mechguy: Especially an SE that may or may not have a 3100?

    DR, have a part number for those flaps?
    2003 Grand Prix GTP-3.5 setup, sold it, miss it
    2002 Grand Prix GT-top swap, GT1 Cam, SD Headers, 90# springs, 42.5 injectors, 3.4 pulley - sold
    2012 Chevrolet Cruze LTZ-Summit White, 1.4Turbo
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  6. #6 Re: Rust Issues 
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    Quote Originally Posted by brandonl2000 View Post
    Especially an SE that may or may not have a 3100?
    No! That's an insult!

    It definitely has a 3800.

    Guess I kind of knew that repairing this wouldn't be wise. I plan to keep the car for however long it lasts. 1 year, 2, 3, who knows? I don't mind paying under $1,000, if it's possible to take care of the rust for that amount.
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  7. #7 Re: Rust Issues 
    I live here. brandonl2000's Avatar
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    Well you're fine in my book then lol
    2003 Grand Prix GTP-3.5 setup, sold it, miss it
    2002 Grand Prix GT-top swap, GT1 Cam, SD Headers, 90# springs, 42.5 injectors, 3.4 pulley - sold
    2012 Chevrolet Cruze LTZ-Summit White, 1.4Turbo
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  8. #8 Re: Rust Issues 
    GrandPrix Junkie redlinepontiac's Avatar
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    welding new patches and undercoating the **** out of it after wards to help prevent rust, you will never stop it, just slow it.

    for the gas door, theres a foam behind it that holds, salt, water, gas and causes the rust.. same thing weld in new patch and try and get undercoating behind to seal it.
    RayRay
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  9. #9 Re: Rust Issues 
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    Is the part number listed on the flap? If not I can check to see if I still have the receipt.
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  10. #10 Re: Rust Issues 
    GrandPrix Junkie ItHurtz's Avatar
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    sand blast then re paint the area
    2000 GTPT Sold-brandonhall10 built trans
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    http://www.grandprixforums.net/threa...uestion.....no
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  11. #11 Re: Rust Issues 
    GrandPrix Junkie redlinepontiac's Avatar
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    be warned about that, sand blasting makes the metal thinner and it will rust faster
    RayRay
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  12. #12 Re: Rust Issues 
    GTP Level Member Rico's Avatar
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    Quote Originally Posted by redlinepontiac View Post
    be warned about that, sand blasting makes the metal thinner and it will rust faster
    You should probably just paint over the rust.
    It's a CUMMINS Dodge not a Dodge Cummins
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  13. #13 Re: Rust Issues 
    Turbo is the way to go. REDCRAPGP's Avatar
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    Part it out...scrape the rest. Save and buy another gp with no or less rust. It's not smart to put the money into it that it's going going to cost to repair it correct. Plus Gp are a dime a dozen.
    Squirrels are my engine. I need a Ford Regal
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  14. #14 Re: Rust Issues 
    GrandPrix Junkie ItHurtz's Avatar
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    All cars cost money. Makes more sense to fix something before it gets worse, then shell out more $$ for another car. Sand blast it, epoxy primer and paint. For the babies, paint remover disk, rust remover solution then throw on some kbs rust seal or eastwood encapsulator.
    2000 GTPT Sold-brandonhall10 built trans
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  15. #15 Re: Rust Issues 
    GTX Level Member blackflag's Avatar
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    I don't know guys, rust? Seems like a money pit. Have you checked your strut towers and such?
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  16. #16 Re: Rust Issues 
    GXP Level Member 02 WS6 TA's Avatar
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    Silly putty and Zaino will cover that right up.
    I may say rude things but learn to take a joke. The internet is funny when you can laugh.
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  17. #17 Re: Rust Issues 
    The Blue One blueguy's Avatar
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    Ha,

    I used JB weld.

    Just buy a gray car, then you never have to paint it either.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
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  18. #18 Re: Rust Issues 
    GrandPrix Junkie CTKGP09's Avatar
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    repairing it will be cheaper than buying another car, but as stated above WATCH THOSE STRUT TOWERS, i had to get rid of my GT when one of them fell thru due to rust
    '04 Chevy Silverado LT 4x4 - intake, headers, full exhaust, zo6 cam, 799 heads, tune, leveled, 33's
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  19. #19 Re: Rust Issues 
    GTX Level Member blackflag's Avatar
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    Ok this is a 97 with 230km. It would be cheaper to buy another one with no rust, AND a s/c
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  20. #20 Re: Rust Issues 
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    Quote Originally Posted by BlackFlag View Post
    Ok this is a 97 with 230km. It would be cheaper to buy another one with no rust, AND a s/c
    Interesting thought. I considered buying a newer GP (2003). There are a couple of GT models in my neighborhood for sale at GM dealers with appreciably less kms on them, and no apparent rust. I was so close to going in to buy a blue one, pretty much fully loaded (leather, sunroof, two tone interior). It's a beauty. But, I think it makes more financial sense to lease a new car, especially with lease rates where they are than it does to spend $7,000 on a 10 year old car that I really don't know much about.

    But, getting a '97 for almost nothing might be worth looking into!

    I want to thank you guys for the suggestions, especially looking at the condition of the strut towers. I don't know a lot about cars, how they work and how to fix them. I'm starting to learn by watching videos and reading online. I'm going to write down the suggestions everyone here made and go into the body shop to see what they say. And perhaps I'll look into getting another '97 or '98, if the right one comes up.
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