GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

25k Maintene on NNBS

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Old Dec 8, 2007 | 01:16 PM
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ob_silverado's Avatar
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Default 25k Maintene on NNBS

Hey guys I have 24k on my truck and am looking at doing 25k tune up. Not like it needs it but here what I was thinking what do you guys think?

Change Oil well obviously.(royal pruple)
Change tranny fluid: not sure if I just drain and fill with new filter or flush it and add new filter and sysnthetic. I am also thinking about a deep trans pan.
Transfer Case drain and feel.
Front and rear axles drain and fill with synthetic and add rear diff cover for better cooling. Mot sure which one
Add a higher capacity tranny cooler. Not sure which one.
New plugs and wire. Not sure which one.
New rims and tire probably

Anything I am missing.

Sorry for the spelling
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Old Dec 8, 2007 | 02:16 PM
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I cant see any reason you would need to change plugs and wires yet. They should last much longer. Other than that the synthetics are great and I would look into Mag-hytec trans and diff. covers.
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Old Dec 9, 2007 | 11:18 PM
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sounds to me you are wanting to waste a lot of money. only thing i think you should do is the trans flush and oil change. call the dealer and ask i think the diffs and transfer case come with synthetic. If you open the transfer case and a clearish blue liquid comes out it is a special fluid. call and ask i think you are about to waste $$. but the diff cover and trans pan i like.
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Old Dec 10, 2007 | 08:42 AM
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I've read on this site that synthetic ATF is not recommended in these transmissions.
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Old Dec 10, 2007 | 10:27 AM
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the fluid in your trans and diffs now are long life fluids and are rated to at least 30k.... you have dexron VI in your trans no wand that has a way better service life than the old dex III and you may want to make sure the synthetics will be ok for your trans.... i would probably stick with the dexVI unless you hear different
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Old Dec 13, 2007 | 08:24 PM
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I guess i ll just flush the tranny and put trans and diff covers on.
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