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 284 (ELECTRICAL COMPONENT LOCATOR)GROUNDS
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Section 284 (Electrical Component Locator): Grounds
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Grounds
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.
GROUNDS LOCATION
| Component | Location |
|---|---|
| G100 | On lower right radiator support. |
| G102 (2.2L VIN 5) | On right front of engine, under generator. See Figure. |
| G102 (4.3L VIN W) | On rear of right cylinder head. See Figure. |
| G103 (2.2L VIN 5) | On right front of engine, under generator. See Figure. |
| G103 (4.3L VIN W) | On rear of right cylinder head. See Figure. |
| G104 | On rear of left cylinder head. |
| G105 (2.2L VIN 5) | On right rear of engine, near ignition control module. See Figure. |
| G105 (4.3L VIN W) | On rear of left cylinder head. |
| G106 | On right frame rail, forward of right front wheel. |
| G107 | On right front of engine block. |
| G108 | On right side of radiator support, next to battery fuse. |
| G110 | Near windshield washer pump. |
| G111 | On left side of radiator support, near SP100. |
| G112 | On right side of radiator support, near SP101. |
| G117 | On left rear of engine compartment, near cruise control module. |
| G200 | Behind upper left end of dash. |
| G201 | Behind upper left end of dash. |
| G202 | Behind upper left end of dash. |
| G203 | Behind right side of dash, between C203 & splice packs. |
| G204 | Behind right side of dash, between C203 & splice packs. |
| G205 | Behind right side of dash, between C203 & splice packs. |
| G206 | Behind right side of dash, between C203 & splice packs. |
| G207 | Near multifunction switch. |
| G402 (Pickup) | On rear frame rail crossmember, near fuel filler neck ground strap. |
| G402 (Utility) | On left rear frame rail. |
| G420 (Pickup) | On right rear frame rail. |
| G420 (Utility) | On right rear corner of vehicle, near C402. |
| G450 | On left rear corner of vehicle, near C403. |
| G475 | On left rear frame rail, near SP402. |
RENDER: 1.0x
NO RELATED
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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.