Component Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Ignition Switch
- Ignition OFF, disconnect the harness connector at the ignition switch.
- Verify the resistance between the terminals listed below match for each ignition switch position.
- If not the specified value, replace the ignition switch.
Resistance Test
| Ignition Switch Position | Terminals 2 and 4 | Terminals 3 and 4 | Terminals 4 and 5 | Terminals 4 and 6 | Terminals 5 and 6 |
|---|---|---|---|---|---|
| Off Key Out | Infinite | Infinite | Infinite | Infinite | Infinite |
| Off Key IN | Infinite | Infinite | < 5.0 ohms | Infinite | Infinite |
| Accessory | Infinite | < 5.0 ohms | Infinite | Infinite | Infinite |
| Run | < 5.0 ohms | < 5.0 ohms | Infinite | Infinite | < 5.0 ohms |
| Start | < 5.0 ohms | Infinite | Infinite | Infinite | 1275-1325 ohms |