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Discussion Starter #1
Hey guys, i just purchased a 2005 STS, very clean inside out, fully loaded A-Z...

The funny thing is, it says STS4 on the back of the car, but it says RWD on the carfax....weird...
I am looking to install 245/45/17 BLIZZAKS all around for winter within a few days, and found a great deal for a set of 4..I also am interested in doing a full 5000K HID install as well as converting the interior and exterior lights to LED's. Blacking out the Grill, and tinting it out, 5% in the rear, 20% on the sides and 35% up front! I am very new to this, the car has 105K on it. Is there a DIY led conversion on how to install ths interior pieces or in general, a DIY's for the STS? Thanks!
 

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05 STS4
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If you have 17s it's not a loaded 1sg. Optioned 1sf likely

Also you don't have factory hids? Then sounds like a 1se with options... If you do have factory hids do not do the high beams. It'll destroy the ballasts with intelibeam on (awesome feature). Also make sure you seal the headlamp assemblies well after tampering or you'll have a swamp in them.
 

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05 STS4
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1sa 1sb 1sc v6 rpo options base to options

1se 1sf 1sg v8 "..."

18s are standard on c and g cars. Optional on b and f.
 

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2006 STS4 V8 1SG & 2007 STS V8 1SE
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I recommend against any tint on the windshield. Legalities aside, some tints can interfere with GPS. That antenna is in the dash.

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18s are standard on c and g cars. Optional on b and f.
I thought the staggered 17's (back's 1/2" wider) were standard on 1SC.
 

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05 STS4
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I could be wrong on the v6 but I swear the c got all the g treatment minus magnetic ride and obviously the n*.
 

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Discussion Starter #9
Anyone put an intake in these before? Change it to the cone or just replace stock air filter to a better one?
 

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'10 CTS4 3.6L Wagon prem; '06 STS 3.6L base; '98 Seville STS
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I could be wrong on the v6 but I swear the c got all the g treatment minus magnetic ride and obviously the n*.
I got a 1sc its 17 staggered loaded with every other option except ride, hids, and hud
 

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2005 White Diamond STS N* 1SF RWD ACC/HUD
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Congrats on buying the fastest color :D Look at the option code label under the spare tire cover. You will then know all options installed on the car. If you don't have the little rectangles next to the headlights then they are not HID. But I'm sure you already know since you are planning to upgrade to them.
 

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Congrats on your 05 STS. It's a great car. I purchased my 05 1sg new and now have over 183,000 miles. I kid you not people still ask me if I just got a new car !

Enjoy
 

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Discussion Starter #15
Congrats on your 05 STS. It's a great car. I purchased my 05 1sg new and now have over 183,000 miles. I kid you not people still ask me if I just got a new car !

Enjoy

Thanks man, its def a nice ride, i had a G35 coupe so im lovin all the room it has and different options!
 
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