Here's a breakdown of the troubleshooting and repair process:
1. Safety First:
* Disconnect the negative battery terminal. This is crucial to prevent accidental shorts and shocks.
2. Identify the Problem Area:
* Inspect the wiring harness: Carefully examine the wiring harness entering and exiting the steering column. Look for any broken, frayed, or corroded wires. Pay close attention to the area where the harness bends and flexes as the steering column is adjusted. A visual inspection might reveal a damaged wire that's the source of the problem.
* Check the ignition switch: While less likely given the symptoms, a faulty ignition switch itself is also a possibility. However, since it was working intermittently, the wiring is the more probable cause.
* Test the ignition switch (Advanced): This requires a multimeter and some knowledge of automotive electrical systems. You'd need to check for continuity and voltage at different points within the ignition switch to determine if it's faulty.
3. Repair Options (Based on Diagnosis):
* Repairing damaged wires: If you find broken or frayed wires, you'll need to carefully repair them. This may involve splicing in new wire sections, using appropriate connectors, and ensuring proper insulation.
* Replacing the ignition switch: If the switch itself is faulty, you'll need to replace it. This is usually a relatively straightforward job, but it requires careful attention to detail to ensure correct reinstallation. You'll need a new ignition switch specific to your 1995 Chevy Silverado.
* Replacing the entire steering column harness: This is the most likely and potentially most difficult solution. The harness is a single unit, and damage to the wires inside the column usually requires replacement of the entire assembly. This is a more involved repair, possibly requiring specialized tools and knowledge.
4. Resources and Considerations:
* Repair manual: A Haynes or Chilton repair manual for your specific year and model Silverado is highly recommended. These manuals will provide detailed diagrams and instructions for accessing and repairing the ignition system and steering column.
* Professional help: If you're not comfortable working on your vehicle's electrical system, it's best to take it to a qualified mechanic. Improper repairs could result in further damage or even create safety hazards.
* Used parts: Replacing the steering column harness can be expensive. Used parts from reputable salvage yards might offer a more affordable option, but ensure it's from a vehicle with a compatible year and model.
In short: The connection between the tilting steering column and the intermittent ignition failure points strongly to a wiring problem within the steering column itself. Thoroughly inspect the wiring harness, and if you find damage, repair it carefully. If the problem is more extensive, replacement of the steering column harness or ignition switch might be necessary. Professional help is strongly advised if you lack experience with automotive electrical systems.
