How do I know what size my light bulb is?
Need to know the GMC Sierra 1500 bulb size to replace a dimmed-off lamp? Below you may find the GMC Sierra 1500 bulb size charts with part numbers for all lamp positions like headlights, fog lights, brake lights, tail lights, turn signals, side markers, parking lights, cargo lights, etc.
Some bulb numbers are interchangeable. So if you spot a couple of different bulb sizes for one application, you may install any of them. Choose the year of production for your vehicle to see the list of OEM bulb sizes that are recommended by the car maker. The bulbs available for your GMC Sierra 1500 can be upgraded using halogen, LED, OE Xenon, and HID conversion kits.
