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145 Amp Alternator


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#1 BILLS04SS

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Posted 21 January 2009 - 02:21 PM

I bought a new 145 amp alternator and got the correct belt for this setup. Does anyone know if it is just a plug and play setup?? Using the existing bracket.. etc..?? Thanks in advance. I hope this in the correct section.
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#2 Mr. P.

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Posted 21 January 2009 - 03:18 PM

Yup, plug and play. There was a change at some point where GM changed the electrical plug on the alternator (!) but as long as the plug fits the only other issue that is a possible concern is the change in belt length (we found a TBSS belt fit ok). But physically the alternator case mounts are the same, they bolt into the existing power steering bracket with your existing hardware. A very worthwhile upgrade.

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#3 Hankg42

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Posted 21 January 2009 - 04:34 PM

This is something I plan on doing real soon too. :thumbs:
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#4 10zin

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Posted 21 January 2009 - 04:36 PM

is ther anything biggger than 145?
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#5 Hankg42

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Posted 21 January 2009 - 04:48 PM

is ther anything biggger than 145?

GM Parts Direct lists a 160 amp alternator for our trucks, and some have also upgraded to 200 amp. Both of those probably would need other upgrades to support them, such as what Krambo told me... "fusing the main power lead off the back of it since the stock fuseable link may melt under heavy demand". I'm not enough of an electrical whiz to elaborate on that or other requirements of a larger alternator than a 145 amp.
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#6 10zin

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Posted 21 January 2009 - 05:06 PM

what do we got in our trucks?
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#7 NoMoreSS

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Posted 21 January 2009 - 05:52 PM

105
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#8 detjoe

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Posted 21 January 2009 - 07:12 PM

The newer alt have different plugs than my 03. I heard you could get a adapter plug but have not seen it or heard where to get it from.

I have a 145 sitting on the shelf b/c of this
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#9 NoMoreSS

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Posted 21 January 2009 - 07:23 PM

FYI NAPA sells them
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#10 Hankg42

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Posted 21 January 2009 - 07:58 PM

The newer alt have different plugs than my 03. I heard you could get a adapter plug but have not seen it or heard where to get it from.

I have a 145 sitting on the shelf b/c of this

Damn... I hope the one I ordered has the right plug.
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#11 zippy

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Posted 21 January 2009 - 10:22 PM

I've put a few of the larger alternators on SSS's. Even on the 03's they should be a direct bolt on if you get the right one just so long as you have the longer belt.
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#12 detjoe

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Posted 21 January 2009 - 11:21 PM

I got the alt from my L92 donor...so I am guessing an Escaladew ould have the 145 but it has the newer plug.


If I went to napa what part am I asking for?
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#13 Fireman31

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Posted 22 January 2009 - 06:25 AM

what do we got in our trucks?


AWD w/clutch fan - 105 amp

RWD w/factory e-fans - 145 amp
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#14 BILLS04SS

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Posted 22 January 2009 - 12:08 PM

Thanks everyone for your feedback.. I'll be doing this upgrade this weekend :) Will post some pics :cheers:
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#15 SSThunder

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Posted 22 January 2009 - 02:02 PM

easy upgrade. I got my 145 amp off ebay and it was a direct plug-n-play. I've got a radix so I did order a different belt but so far the belt I was running still fits, just a lot tighter.
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