Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 921 (LIGHTING SYSTEMS)SPECIFICATIONS
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Section 921 (Lighting Systems): Specifications
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Specifications
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
Fastener Tightening Specifications
| Application | Specification | |
|---|---|---|
| Metric | English | |
| Ashtray Housing to Instrument Panel Screws | 1.9 N.m | 17 lb in |
| Ballast and Ballast Subplate to Ballast Support Bracket Fastener | 8.5 N.m | 75 lb in |
| Ballast Subplate Fasteners | 5 N.m | 45 lb in |
| Ballast Support Bracket to Vehicle Fastener | 8 N.m | 70 lb in |
| Dome Lamp Base to High Mount Stoplamp Screws | 2.5 N.m | 22 lb in |
| Dome Lamp to High Mount Stoplamp Screws (Pickup) | 2.5 N.m | 22 lb in |
| Front Fog lamp Bolts | 10 N.m | 88 lb in |
| Ground Wire Screw to the Hood | 1.9 N.m | 17 lb in |
| Headlamp Mounting Bracket Bolts | 1 N.m | 9 lb in |
| Headlamp Mounting Bracket Flange Nut | 2.5 N.m | 22 lb in |
| Headlamp Starter Cable Screws | 0.7 N.m | 6 lb in |
| Headlamp Starter Screws | 1 N.m | 9 lb in |
| Headlamp Switch Panel to Instrument Panel Accessory Trim Plate Screws | 1 N.m | 9 lb in |
| High Mount Stoplamp Lens Screws (Pickup) | 2.5 N.m | 22 lb in |
| High Mount Stoplamp to Endgate Window Screws (Utility) | 1.4 N.m | 12 lb in |
| High Mount Stoplamp to Roof Screws (Utility) | 1.4 N.m | 12 lb in |
| License Plate Lamp to License Plate Bracket Screws | 1.4 N.m | 12 lb in |
| Sunshade to Vehicle Screws | 1.9 N.m | 17 lb in |
| Taillamp Assembly to Vehicle Screws | 1.9 N.m | 17 lb in |
| Underhood Lamp to Hood Screws | 1.9 N.m | 17 lb in |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.