How to Replace License Plate Bulbs 03-07 Cadillac CTS
Difficulty: Beginner · About 45 min · Cadillac Cts
Replace the license-plate bulbs on a 2003–2007 Cadillac CTS by removing the trunk liner and inner panel, then checking the lamps before reinstalling the trim.
Tools you will need
- Flat Blade Screwdriver
- 10mm Socket
- Door Panel Removal Tool
- Ratchet
- Trim Tool Set
Parts and supplies
- 194 license-plate bulb
Steps
- Remove the trunk liner
Open the trunk and release the liner retainer with a flat screwdriver. Use a trim tool to remove the remaining push pins, keeping them together for reinstallation.
- Disconnect and remove the trunk panel
Unclip the license-lamp harness and disconnect its electrical plug. Push the harness grommet through the panel, remove the panel nuts, and lift the trunk trim panel away carefully.
- Replace the license-plate bulb
Twist the bulb socket out of the panel and pull the old bulb straight from its holder. Install the correct replacement bulb, refit the socket, and test the lamp before putting the panel back.
- Reinstall the trunk panel and liner
Remove any loose clips left on the trunk lid and route the harness through its opening. Align the panel studs, reinstall the nuts, reconnect and clip the harness, then reinstall the trunk liner and its retainers.
Check your vehicle’s repair manual for exact specifications and fit.