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.
1993 Chevrolet Forward Control 7.4 NFACTORY OEM SERVICE PROCEDURE
Circuit Protection Devices
CIRCUIT PROTECTION DEVICES LOCATION
| Component | Location | |
|---|---|---|
| Circuit Breakers | ||
| Power Accessory | On fuse block. | |
| Power Window | On fuse block. | |
| Fuse Block | ||
| "G" Series 4.3L (VIN Z) | Behind left side of dash, above kick panel. See Figure. | |
| "P" Series 4.3L (VIN Z - A/T) | Behind left side of dash, above kick panel. See Figure. | |
| "P" Series 4.3L (VIN Z - M/T) | Behind left side of dash, above kick panel. See Figure. | |
| "G" Series 5.0L (VIN H) & 5.7L (VIN K) | Behind left side of dash, above kick panel. See Figure. | |
| "P" Series 5.7L (VIN K - A/T) | Behind left side of dash, above kick panel. See Figure. | |
| "P" Series 5.7L (VIN K - M/T) | Behind left side of dash, above kick panel. See Figure. | |
| "G" Series 5.7L (VIN K) | Behind left side of dash, above kick panel. See Figure. | |
| "G" Series 7.4L (VIN N) | Behind left side of dash, above kick panel. See Figure. | |
| "G" Series 7.4L (VIN N) | Behind left side of dash, above kick panel. See Figure. | |
| "P" Series 7.4L (VIN N) | Behind left side of dash, above kick panel. See Figure. | |
| Fusible Links | ||
| ABS Pump Motor (Rust) | At battery junction block | |
| A/C Heater (Rust) | At battery junction block (rear unit). | |
| Alternator (Rust) | At battery junction block. | |
| Auxiliary Cooling Fan Relay (Rust) | At battery junction block. | |
| Glow Plug Controller (Rust) | At battery junction block. | |
| Ignition Switch (Rust) | At battery junction block (2 links). | |
| Power Accessories (Rust) | At battery junction block. | |
| In-Line Fuse (Trailer) | At battery junction block. | |
Factory Service Tools
Use the Manual With the Right Hardware
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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.