What size rear light bulb do you need for your 2003 Jeep Grand Cherokee?

A 2003 Jeep Grand Cherokee uses several different bulbs for its rear lights, depending on the specific function (brake light, turn signal, reverse light, etc.). You cannot determine the correct bulb size without knowing *which* light is burnt out.

To find the correct bulb size, you need to:

1. Consult your owner's manual: This is the best source of information. It will have a diagram showing the location of each bulb and its corresponding size and type.

2. Check the bulb itself: If you can access the burnt-out bulb, its size and type are usually printed on the bulb's base.

3. Use an online parts catalog: Websites like AutoZone, Advance Auto Parts, or Napa Auto Parts allow you to search for parts by vehicle year, make, and model. Enter your Jeep's details, and you can see diagrams and bulb specifications for your rear lighting system.

Simply stating "2003 Jeep Grand Cherokee" isn't enough information to determine the correct bulb size. You must specify which light is malfunctioning.