K 1500 Truck 4WD V8-6.0L VIN U (2001)
2. Ignition switch signal circuits may be shorted together.
4. This step tests for battery voltage on the signal circuits that are not required.
5. This step tests for no battery voltage on the required signal circuits.
6. If any ignition switch parameters that should be inactive in the present ignition switch position are active,
7. This step eliminates open circuits as the cause of the malfimction.
