It will vary depending on if you have HID lighting or Halogen Lighting which you did not include in your question. 2008 Cadillac CTS headlight bulb general replacement procedure: Purchase the correct replacement headlight bulb(s) first, before disassembling the vehicle. See sources and related links below for replacement bulb information. Then consult your owner's manual for the headlight bulb replacement procedure. As simple as it sounds, the owner's manual is the best place to start for bulb replacement instructions and illustrations. You may want to consider replacing both left and right at the same time in order to keep brightness and color equal (optional).
You have to remove from bumper and splash gaurd just to change bulb,thats crazy
The 2008 Cadillac CTS has 24 valves.
The 2008 Cadillac CTS has a V6 engine.
There is no 1998 CTS
The 2008 Cadillac CTS has a 6-speed manual.
The 2008 Cadillac CTS is a gas-powered vehicle.
The 2008 Cadillac CTS runs on regular unleaded.
The 2008 Cadillac CTS is 15 ft. 11.6 in. (191.6 in.) long.
The 2008 Cadillac CTS's turning circle is 36.0 ft..
The 2008 Cadillac CTS has double overhead cam (DOHC).
The height of the 2008 Cadillac CTS is 4 ft. 10 in. (58 in.).
The 2008 Cadillac CTS has 35.9 in. of rear leg room.