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    C68 Blower Motor

    I believe my blower motor in my 86 GN is squeaking . Usually gets better or disappears after running for awhile. I have the electronic controls which I believe uses a different blower motor than the manual C60 controls. Are the bearing on these blower motors replaceable and if not where can...
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    AC PF52 Oil Filter

    Doing my first oil change A quick search shows many recommend the AC PF52 . I have my 86 GN configured in Amazon. When I search that filter on amazon it says "does not fit my car" ? If I search PF 47F it says it does fit my car.
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    Turn signal noise

    All my turn signals work. When engaged I see the light on the dash flashing as it should but I don't hear any clicking . Signal disengages as it should when wheel goes back to center. What produces the turn signal clicking noise ? Is this the flasher ?
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    Bumper Fillers ?

    I saw an older video (2012) from Kirbans saying they don't recommend fiberglass bumper fillers and don't sell them. I also have seen recent videos on spool fools fiberglass bumper fillers and they look very nice. Any opinions ?
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    Power seat switch

    Anyone know where I can get one ? 86 GN
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    Stock engine more power

    Hello everyone, What are the best mods without going crazy for a stock 1987 GN engine besides a chip. Looking to gain approx 50 -100HP over stock
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    MAF replacement ?

    Hi everyone, Would this MAF be a suitable replacement for my 87 GN ? https://www.summitracing.com/int/parts/aaz-74-7866/overview/year/1987/make/buick/model/regal/submodel/grand-national
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    What is this ?

    Anyone know what this is ? looks like a lighter or power port ?
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    Rough idle when engine cold

    Hi everyone, I am new to the turbo world. Just bought an 87 GN with a few mods. I don't know all the details of the mods but I do know it has an upgraded turbo, upgraded cam, Shift kit and stall converter and upgraded inter cooler (sits in front of rad) Car runs great once warmed up. On cold...
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    General question on GN's

    Hi everyone, I am new to this forum and looking to purchase an 87 GN. I don't know a lot about these cars other then I want one. I have read some general info I found online on what to look for when buying one. I am very picky about cars and have owned many muscle cars over the years but never...
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