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.
1999 Chevrolet Cutaway 7.4 JFACTORY OEM SERVICE PROCEDURE
Electrical Component Locator: Grounds
GROUNDS LOCATION
| Component | Location |
|---|---|
| G100 | On right side of engine compartment, near fenderwell. |
| G101 | Near thermostat housing. |
| G102 | Engine harness, near generator bracket. |
| G102 (6.5L VIN F) | Near A/C compressor. |
| G103 (4.3L VIN W) | Engine harness, near generator bracket. |
| G103 (5.0L VIN M) | On rear of right cylinder head. |
| G103 (5.7L VIN R) | On rear of right cylinder head. |
| G103 (6.5L VIN F) | Engine harness, near generator bracket. |
| G103 (7.4L VIN J) | On rear of right cylinder head. |
| G104 | On right framerail, near front of engine. |
| G105 (7.4L VIN J) | On right lower front of engine. See Figure . |
| G108 | On left side of engine compartment, near fenderwell. |
| G109 | On right side of engine compartment, near fenderwell. |
| G110 | Next to battery. |
| G112 | Under brake master cylinder. |
| G200 | Behind left kick panel. |
| G201 | Behind left kick panel. |
| G202 | Behind left kick panel. |
| G300 | On left framerail, near auxiliary battery. |
| G400 | On left "D" pillar. |
| G401 | On right "D" pillar. |
| G402 | On right "D" pillar. |
Factory Service Tools
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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.
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