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How to Change the Back Up Lights on a 2003 Cadillac CTS

You should make sure that the back-up lights on your 2003 Cadillac CTS are always in functioning order, and not just for safety reasons. Theres also the chance that you could get a citation for driving with faulty taillights. The 2003 CTS uses a number 3157 bulb for the back-up lights. Changing the back-up lights on the CTS is a simple process, and all you will need is a screwdriver.

Instructions

1

Pop the trunk of the CTS and turn off the engine.

2

Rotate the plastic wing nut on the tire counterclockwise to loosen and remove it. Remove the tire from the trunk of the CTS.

3

Detach the two screws securing the taillight assembly to the vehicle, using a Phillips screwdriver.

4

Pull the assembly out of the vehicle and remove the top socket by rotating it counterclockwise.

5

Pull the socket out of the assembly. Remove the bulb from the socket and push a new bulb in.

6

Reinsert the socket into the assembly and rotate it clockwise to secure it.

7

Reinsert the assembly into the CTS and reattach the two screws.

8

Place the tire back into the trunk. Secure it by rotating the wing nut clockwise. Close the trunk lid.