2003 GMC Sierra 1500HD Headlight Bulb Size
By clicking the link you will be redirected to Amazon. The aftermarket bulbs & headlights below may improve the illumination of your vehicle and make it stand out from the crowd.
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Fog Light Bulb Front - 9145 LED
Headlight Bulb High Beam - 9005
Headlight Bulb Low Beam - 9006
Center High Mount Stop Light Bulb - 921
Turn Signal Light Bulb Front - 3157A
License Plate Light Bulb - 194
Parking Light Bulb - 3157A
Tail Light Bulb - 3157R
Turn Signal Light Bulb Rear - 3157A
Glove Box Light Bulb - 194
Trunk or Cargo Area Light - 912
Map Light Bulb(Compare to original - Option 2) - 578
Map Light Bulb(Compare to original - Option 1) - 168
Dome Light Bulb(Compare to original - Option 1) - 578
Ash Tray Light Bulb - 161
Courtesy Light Bulb(Compare to original - Option 1) - 194
Courtesy Light Bulb(Compare to original - Option 2) - 2721
The 2003 GMC Sierra 1500HD bulb size chart specifies the recommended lamp part numbers and types for all positions of its electrical system, like headlights, fog lights, brake lights, side markers, etc. If you want to upgrade the headlights, the aftermarket bulb you select has to be the exact size your 2003 GMC Sierra 1500HD requires to fit into the housing and match the wattage and voltage specifications. Pay special attention to the marking and make sure the bulb is “DOT” compliant to avoid legal issues.