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 MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 730 (STEERING WHEEL AND STEERING COLUMN)COMPONENT LOCATORSTEERING WHEEL AND COLUMN CONNECTOR END VIEWS
1999 GMC Forward Control 5.7 R, Automatic
Steering Wheel and Column Connector End Views
1999 GMC Forward Control 5.7 R, AutomaticSECTION Steering Wheel and Column Connector End Views
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Steering Column Lock Relay Terminal Identification
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A1 | ORN | 2540 | Battery Positive Voltage |
| A2 | ORN | 1603 | Steering Column Lock |
| B1 | - | - | Not Used |
| B2 | PPL | 1604 | Steering Column Unlock |
| C1 | WHT | 2630 | Steering Column Lock |
| C2 | DK GRN | 2629 | Steering Column Lock Relay Control |
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.