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Bonneville GXP/ Northstar Powered Cars Discuss your Bonneville GXP and/or any other Northstar powered Olds or Cadillac... Including the 3.5L Twin Cam V6 (Short Star ) 4.0L and 4.6L Northstar V8's. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-10-2007, 07:38 PM   #1
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Default Oil Change

I put a K&N air filter in today and I changed over to synthetic oil. I ran into a problem while changing the oil. The catch can I have is only 5 litres. Needless to say alot more oil than 5 litres comes out of that 4.6. Now that was a huge mess. Other than that it went as planned.

On another note, are these the proper instructions for clearing the corners on a gxp??

2000+ models, follow this:

OK...here is the scoop. Yes, it can be done and rather easily (if you do it right).

What I mean by this is that taking the head lamp assembly apart and putting it back together takes some time. We aren't talking about cracking a walnut here.

To remove the headlamp, remove the one screw like the owner'* manual says (under bulb replacement). Take out the longer screw at the pivot point, disconnect all the bulbs and the lamp should pull out with a little wiggling back and forth, while pulling straight out.

Once the assembly is out, you will notice that there are 7 or 8 spring clips holding the clear lens to the enclosure. Using a small pair of needle-nose pliers and/or a large flat blade screwdriver, remove all the clips. Starting at the large end of the assembly, start prying the lens off. You may need a screwdriver to get it started. You will notice that the entire edge of the lense is coated with black silicon. As you start to get the lens away from the enclosure, you may need to slice the silicon with a razor blade to make things easier. Keep doing this until the whole thing comes apart.

Once it is apart, you will see that the entire amber piece inside the lens is a removable section. Carefully pry it out by flexing it inward and releasing the four prongs holding it in. Be careful not to break it, as it will not hold properly if you ever want to put it back in.

This is the tricky part...putting the assembly back together. Carefully align the lens back on the enclosure and get it seated the best you can. The silicon will help keep it in place while you do this. You will notice that since you pried it apart, the black silicon stretched a bit. This will seem like the lens does not fit right. Don't worry, just be patient. Install any spring clips that you can. The ones that don't seem to fit will take some work. What seems to work best is using a pair of needle-nose pliers adjacent to the area where the clip sits to compress the seam. While you are compressing the seam, use another set of hands to get the clip(*) back in place. I would try to make sure that you get them all back in.

Just to be sure, I would spread a small (I mean small) bead of the same type of black silicon (you can pick it up at any auto parts store...I think it is called windshield silicon) around the entire joint of the lens. Let it cure before you try to put it back on the car. Otherwise, the installation is the reverse of the removal.

Thanks alot
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Old 03-10-2007, 07:58 PM   #2
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The LD8 requires 7.5 guarts of oil. If you want to clear your headlamps, remember the GXP headlamp is put together with a butyl glue, much tougher than silicone. And very expensive to replace the unit if you crack the lense.. Be careful if cleared is your preference.
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Old 03-10-2007, 08:53 PM   #3
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Quote:
I put a K&N air filter in today
I was doing thinking of this. What are the advantages and are they noticable? Is this the unit where you take out your OEM air box?
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Old 03-10-2007, 10:18 PM   #4
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Quote:
Originally Posted by two bonnies
Quote:
I put a K&N air filter in today
I was doing thinking of this. What are the advantages and are they noticable? Is this the unit where you take out your OEM air box?

K&N'* are great they give you added HP because your car can breathe better. Plus they have a lifetime warranty, they can be cleaned and re-oiled then reinstalled.
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Old 03-10-2007, 10:22 PM   #5
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Do I have to take out my air box in the GXP or does the K&N fit in it?

My BiL got a K&N for his 99 SSE and took out the air box. I'll prolly get one for the 96 since I just did the UIM/LIM and can tell the wifey that it is "needed".

Will it invalidate a GM 3/36 warranty?
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Old 03-10-2007, 10:34 PM   #6
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Quote:
Originally Posted by two bonnies
Do I have to take out my air box in the GXP or does the K&N fit in it?

My BiL got a K&N for his 99 SSE and took out the air box. I'll prolly get one for the 96 since I just did the UIM/LIM and can tell the wifey that it is "needed".

Will it invalidate a GM 3/36 warranty?

It depends on which version, I have the filter which fits right into the original air filter box and does not void the warranty. But there'* another version which invovles installing a pipe and other stuff, I'm not too sure about that way. But my warranty ended ages ago so I don't worry.

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Old 03-11-2007, 12:23 AM   #7
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Supposedly they have to prove that the modification you did caused the failure for them not to cover it.
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Old 03-13-2007, 12:41 PM   #8
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Two Bonnies, K&N has a drop in filter for our GXP LD8 Airbox. Its is a rather new listing and all parts stores dont have the number listed as for a GXP. The correct number is listed on the K&N web sire, when I have some time, I will dig it up and post it here as well. It doesnt affect the warranty in any way. results are noot much, but it will breath a little better. Dont believe totally falsestatements you may read on the web or in advertisements. Changing out merely your air filter is not going to give you a apreceable power defference.It can help other mods get the air needed, but alone its very small.
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Old 03-13-2007, 01:34 PM   #9
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I used the drop in air filter. I would say it took 30 seconds to do. I dont think there is a noticable difference in performance or gas mileage. If there is it is very minimal. The filter that I removed though looked like it was probably original. Half of it was black but the other half was clean. It seems like It is only pulling air from where the tube connects the two air boxes. Has anyone tried opening this up with any success?
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Old 03-13-2007, 06:21 PM   #10
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Jarvis..

If you want to clear your Corners we could possibly do that when we hook up more then likely come right to Trenton I think my aunt can get us on the base for some pics.

drop me a pm when its good for you i was really hoping this week was going to be nice but i dont think its going to be.

If you want i can swap out my inserts with you take a look at my corners

http://www.bonnevilleclub.com/forum/...=799110#799110
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