View Full Version : Low/High Beam Bulbs

06-16-09, 07:51 AM
I am new here, so be patient. I bought a 2005 STS back in February for a great deal. However, I have a low beam out now.

How can I tell if I have the HID/Xenon lights without ripping the car apart? I want to purchase all new bulbs so I only have to get into the assemblies once. I do not want to open it up, verify the bulbs, get bulbs, then open it up again.

06-16-09, 09:23 AM
I'm sure the HID Xenon lights were part of an option package. Can you tell us more about what options your car has, like V8/V6? Nav? 17/18" wheels?

06-16-09, 12:13 PM
I think all the HID cars also included the headlight washer system.

But to be sure, check your RPO codes in the trunk.
You will want to look for: TT6

06-16-09, 01:27 PM
The good news, the bulbs are covered by the Certified Preowned warranty.

This is a 2005 STS, no nav, V6, custom Caddy rims (all one size and not the different sizes on the original). I will find out for sure when I take it in Friday to have them replaced. All I can really tell at the moment is that when they are off, they have a blueish tint to them in the assembly.

BTW, thank you for the responses.

06-16-09, 04:33 PM
In 2005 HID was only an option on the V8 models i do believe.

Check your RPO codes though, it's fun!
The codes are under the spare tire cover.

06-16-09, 06:20 PM
Thanks for the info. This is what I have.

T84 Headlamps RH Rule of the Road, E Mark

This appears to be the halogen bulbs. If I chose to put in a HID kit, how difficult is that undertaking?

06-16-09, 07:24 PM
In 2005 HID was only an option on the V8 models i do believe.

Correct - MY 06 also.