Buick Roadmaster Ignition Switch Guide (1991-1996)
Having trouble starting your car or dealing with strange electrical issues? Your ignition switch might be the culprit.
- A bad ignition switch can cause a no-start condition or dangerous stalling while driving.
- Verify if your problem is the switch, the ignition lock cylinder (for 'Security' light issues), or the Ignition Control Module (for heat-related stalling).
- You must order the correct switch for your car's tilt or non-tilt steering column.
- Brands like Standard Ignition offer a good balance of quality and price for this part.
Is Your Roadmaster's Ignition Switch Failing?
The ignition switch in the 1991-1996 Buick Roadmaster is a common wear item. After decades of use, the internal electrical contacts can burn out or break, leading to a variety of frustrating and potentially dangerous problems. Symptoms can be intermittent at first but usually get worse over time. A failing switch can mimic other issues, so it's important to know what to look for.
Top 5 Failure Symptoms
🎬 Watch: A visual guide to common ignition switch failure symptoms.- Car Won't Start or Crank: You turn the key and nothing happens, or you only hear a single click. The switch isn't sending the signal to the starter motor.
- Engine Stalls Suddenly: The car may start and run fine, then suddenly shut off while you're driving. This happens when the switch momentarily loses contact and cuts power to the ignition or fuel system.
- Intermittent Electrical Problems: You might notice the radio cutting out, dashboard lights flickering, or power windows not working. Sometimes these issues happen only when you jiggle the key.
- Key Feels 'Stuck' or Won't Turn: While often a sign of a bad ignition lock cylinder, a failing switch connected to it can also cause binding or difficulty turning the key.
- Accessories Work, But Car Won't Start: You can turn the key to the 'Accessory' position and the radio works, but when you turn it to 'Start', everything dies. This points to a failure in the 'start' position contacts inside the switch.
Important: Switch vs. Lock Cylinder
Many starting issues on these cars are caused by the Ignition Lock Cylinder and the associated VATS anti-theft system, not the switch itself. If your 'Security' light is on or flashing, the problem is likely with the lock cylinder's ability to read the resistor pellet on your key. 🎬 See how to replace the VATS ignition lock cylinder instead. The ignition switch is a separate part that the lock cylinder operates.
Choosing the Right Aftermarket Ignition Switch
For a part this critical, quality matters. While OEM from AC Delco is an option, several aftermarket brands provide reliable alternatives at a lower cost.
- Standard Ignition (Standard Motor Products): Often considered a top-tier aftermarket brand, SMP parts are known for their quality and durability. They use copper alloy conductors and test their switches to ensure performance, making them a solid choice for reliability.
- Rostra Powertrain: Rostra is a known electronics manufacturer. While not as commonly discussed in forums for this specific part, they generally produce quality components that meet OEM specifications.
- Replacement (Generic): This is a budget-friendly option. While it will get the job done, the materials and manufacturing tolerances may not be as high as premium brands. For a part that requires removing the steering column trim to access, spending a little more for a better brand can save you from doing the job twice.
Pro Tip: Tilt vs. Non-Tilt Column
The 1991-1996 Roadmaster was available with and without a tilt steering wheel. These two designs use different ignition switches. Always verify which type of steering column your car has before ordering a new part to avoid getting the wrong one.
Cost of Replacing a Buick Roadmaster Ignition Switch
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket | $20 - $42 |
| Shop Labor | $100 - $200 |
Frequently Asked Questions
Can I replace the ignition switch myself?
Yes, this is a DIY-feasible job for someone with moderate experience. It typically involves removing the lower dash panels and possibly lowering the steering column 🎬 Watch this walkthrough for replacing the GM ignition switch. to access the switch. No special programming is required, but you need to be careful with the plastic trim and electrical connectors.
Will a new ignition switch fix my 'Security' light problem?
No. The 'Security' light is related to the VATS anti-theft system, which reads a resistor on your key via the ignition lock cylinder. If the light is on, you likely need a new ignition lock cylinder, not an ignition switch.
My car stalls, but only when it's hot. Is it the ignition switch?
It could be, but heat-related stalling is also a classic symptom of a failing Ignition Control Module (ICM). The ICM is another common failure point on these cars. If you're experiencing stalling when the engine is hot, it's wise to test the ICM before replacing the ignition switch.
Are there any recalls on the Roadmaster ignition switch?
No, searches of the NHTSA database do not show any specific recalls for the ignition switch on the 1991-1996 Buick Roadmaster. While GM had major ignition switch recalls in 2014, the Roadmaster was not included in that campaign.
Helpful Videos
Technical Specifications
OEM Part Numbers: D1405B
Located on the steering column. Actuated by a rod connected to the ignition lock cylinder. Different parts for tilt and non-tilt steering columns.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Buick Roadmaster:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Roadmaster's Ignition Switch Failing?
- Top 5 Failure Symptoms
- Important: Switch vs. Lock Cylinder
- Choosing the Right Aftermarket Ignition Switch
- Pro Tip: Tilt vs. Non-Tilt Column
- Cost of Replacing a Buick Roadmaster Ignition Switch
- Frequently Asked Questions
- 🎟️ Get 5% Off