| Location | Size | |
| Rear Side Door | 6.5" | |
| Front Side Door | 6.5" |
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2008 Chevrolet Trailblazer Car Audio and Video Parts & Accessories
Speakers:
Lighting:
| Location | Bulb | |
| Back Up Light | 3157 | |
| Brake | 3157 | |
| Courtesy | 194 | |
| Dome Light | 212-2 | |
| Front Fog Light | 880 | |
| Front Fog Light | 893 | |
| Front Side Marker | 194 | |
| Front Turn Signal | 3757NA | |
| Glove Box | 194 | |
| High Beam Headlight | 9005 | |
| License Plate | 12961 | |
| Low Beam Headlight | 9006 | |
| Luggage Compartment | 212-2 | |
| Map Light | 12961 | |
| Parking Light | 3757NA | |
| Rear Turn Signal | 3157 | |
| Side Marker | 194 | |
| Tail Light | 3157 | |
| Trunk | 212-2 |