Chevrolet V10 Ignition Switch Guide for the 1987 Model Year
Having trouble starting your truck or getting it to shut off? Your ignition switch might be the problem.
- The ignition switch is not where your key goes; it's an electrical part on the steering column that fails with age.
- Common failure symptoms include no-start (especially when hot), the engine not shutting off, and battery drain.
- Aftermarket is the only option; Standard Ignition (SMP) is a trusted brand for this part, while 'Replacement' brands are a budget choice.
- Replacement can be difficult due to the switch's location under the dash, requiring you to lower the steering column.
Understanding the Ignition Switch in Your '87 V10
On these classic square body trucks, the ignition switch is a common wear item. It's a completely separate part from the ignition lock cylinder where you put your key. The switch itself is a black plastic and metal box located on the steering column, usually hidden from view. When you turn your key, an actuator rod pushes or pulls a slider on the ignition switch, making different electrical connections for the 'ACC', 'RUN', and 'START' positions. Over time, the internal contacts can wear out, get corroded, or overheat, leading to a variety of electrical gremlins.
Common Symptoms of a Failing Ignition Switch
A bad ignition switch can cause confusing problems that might seem unrelated. Because it controls power to so many systems, its failure can mimic other issues. Here are the most common signs V10 owners report:
🎬 Watch: A visual guide to 8 common ignition switch symptoms.- No-Start or Intermittent Start: You turn the key and nothing happens, or it only works sometimes. This may get worse when the engine bay is hot.
- Engine Won't Shut Off: You turn the key to the 'OFF' position and pull it out, but the engine keeps running, sometimes for a minute or two before dying.
- Accessory and Dash Light Problems: You may lose power to the radio, blower fan, or see dashboard lights flicker or fail to illuminate when you turn the key.
- Stalling While Driving: In severe cases, the switch can lose contact internally and cut power to the engine while you are on the road.
- Battery Drain: If the switch fails to completely disconnect the circuits when the truck is off, it can cause a slow drain on your battery.
Check Other Parts First
Symptoms of a bad ignition switch can be similar to those of a bad starter, battery, neutral safety switch, or a corroded fusible link. Always test your battery and check your cable connections before deciding to replace the ignition switch. On automatic transmission models, try starting the truck in neutral to rule out a faulty neutral safety switch.
Choosing the Right Aftermarket Ignition Switch
Original OEM ignition switches for a 1987 V10 are no longer produced by GM. The aftermarket is your only option, but several brands provide reliable replacements.
Brand Quality Tiers
- Premium Aftermarket (Standard Ignition): Standard Motor Products (SMP) is a well-regarded aftermarket manufacturer with a long history. For an older truck like the V10, their standard line of parts is a trusted choice for many mechanics and DIYers. They are often considered a top-tier aftermarket option that meets or exceeds original specifications.
- Standard Aftermarket (Rostra Powertrain): Rostra is known for various automotive electronic components. While there isn't extensive feedback specifically on their ignition switches for this truck, they are an established brand in the aftermarket space. These parts are a solid mid-range choice.
- Economy (Replacement): This brand name typically represents a value-oriented product. While it may be the most affordable, quality can be inconsistent. It can be a good choice for a budget-conscious repair, but may not have the same longevity as premium brands. Some owners have reported aftermarket switches failing in as little as a year.
A Note on Tilt Steering
🎬 See this walkthrough for replacing a switch on non-tilt columns.Many replacement ignition switches are listed as being for models "With Tilt Steering Wheel." While the switch itself may be the same, the installation procedure can be slightly different. Always confirm this detail when ordering to ensure you get the correct part and have the right instructions.
| Part Grade | Our Inventory Price Range | Expected Quality |
|---|---|---|
| Premium Aftermarket (e.g., Standard Ignition) | $35 - $41.93 | Best quality and longevity, trusted by professionals. |
| Standard Aftermarket (e.g., Rostra Powertrain) | $25 - $35 | Good quality for the price, a reliable choice. |
| Economy (e.g., Replacement) | $20.77 - $25 | Meets basic needs, but may have a shorter lifespan. |
Frequently Asked Questions
Is the ignition switch the same as the lock cylinder?
No. The lock cylinder is the mechanical part your key goes into. The ignition switch is the electrical part further down the steering column that the lock cylinder controls via a rod. If your key is hard to turn or gets stuck, the problem is likely the lock cylinder. If the key turns fine but the truck has electrical starting issues, the ignition switch is a more likely culprit.
Why won't my truck start when it's hot?
This is a classic symptom of a failing ignition switch. As the switch gets hot, the internal metal contacts can expand and fail to make a proper connection, preventing power from reaching the starter or ignition system. After it cools down, the contacts shrink back and may work normally again.
Is replacing the ignition switch a difficult job?
It can be. The switch is in a very tight spot on top of the steering column, under the dash. It often requires lowering the steering column to gain access. The most critical part is ensuring the new switch and the actuator rod are correctly aligned. Misalignment can lead to it not starting or not shutting off. It is a feasible DIY job for someone with patience and mechanical experience.
🎬 Watch: Step-by-step video on removing and installing the ignition switch.Do I need to get my new switch programmed?
No. The 1987 Chevrolet V10 uses a purely mechanical key and electrical switch system. There are no computer chips or programming involved for the ignition switch. It is a direct plug-and-play replacement part.
Helpful Videos
Technical Specifications
Located on steering column, rod-actuated, compatible with tilt-wheel 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.
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