Trim, body style, and factory lighting can affect fitment. Check the notes in the chart before ordering.
Headlights and Fog Lights
Front Exterior Lights
Rear Exterior Lights
Interior Lights
| Light position | Bulb size | Fitment |
|---|---|---|
| Vanity Mirror | 37 | — |
| Glove Box | 194 | — |
| Glove Box | 7441 | — |
| Trunk Area | 211-2 | — |
| Engine | 1141 | — |
| Courtesy | 168 | — |
| Courtesy | 917 | — |
| Instrument Panel | PC168 | — |
| Map Light | 212-2 | Compare to original - Option 2 |
| Map Light | 194 | Compare to original - Option 1 |
| Map Light | 7441 | Compare to original - Option 1 |
| Dome Light | 562 | Compare to original - Option 1 |
| Dome Light | 564 | Compare to original - Option 2 |
| Ash Tray | 194 | — |
| Ash Tray | 7441 | — |
| Turn Signal Indicator | PC74 | — |
| High Beam Indicator | PC74 | — |
| Parking Brake Indicator | PC74 | — |
| Check Engine | PC74 | — |
About the 2003 Chevrolet Blazer Bulb Chart
This chart lists the recorded exterior and interior bulb positions for the 2003 Chevrolet Blazer. Body style can still change the bulb a vehicle uses in a given position. Trim level and factory lighting equipment may also affect fitment, so two vehicles with the same year, make, and model are not always identical. Compare the original bulb and socket before ordering a replacement. Where a row is recorded as an LED unit, the lamp may be a complete assembly rather than a separately replaceable bulb. Use the chart to identify the stored size, then confirm the part number on the lamp you remove.
Before ordering
Body style, trim, and factory lighting packages can affect fitment. Confirm the original bulb type and base before ordering a replacement. A replacement should match the recorded size and socket for that position on your vehicle.
Reviewed by Brent Ordway
Brent Ordway is an ASE-certified car technician. He has been working on cars since he was a teenager and loved helping people keep their vehicles running smoothly. Brent's skills as a mechanic are unrivaled. In 2022, he earned his place on the list of winners for the ASE Master Automobile Technician of the Year award.
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Chevrolet Blazer Bulb Chart By Years
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