1987 GMC V1500 Ignition Switch: Troubleshooting and Replacement Guide
Don't let a faulty ignition switch leave you stranded; learn to diagnose and replace this critical part in your classic GMC truck.
- A failing ignition switch can cause a no-start condition, sudden stalling, or intermittent electrical problems.
- Before replacing the switch, always check for bad ground wires, as they can cause identical symptoms on these trucks.
- Replacement requires special tools like a steering wheel puller and lock plate compressor, but is a manageable DIY job.
- Aftermarket brand quality varies; Standard Ignition is a top-tier choice, while budget brands offer savings with potential reliability trade-offs.
Is Your Ignition Switch Failing? Common Symptoms
A bad ignition switch in a 1987 GMC V1500 can cause some confusing problems that might seem unrelated. Because these trucks have simpler electrical systems, a single failing switch can have widespread effects. Watch for these warning signs:
- Truck won't start or crank: You turn the key and get nothing, not even a click. The switch isn't completing the circuit to the starter motor.
- Engine stalls suddenly: The most dangerous symptom. The truck's engine may cut out while you're driving, often when hitting a bump. This happens when worn contacts inside the switch briefly lose connection.
- Starts then dies: The engine fires up but immediately shuts down. The switch may provide power to start but fails to keep the ignition or fuel system powered.
- Electrical accessories don't work: Your radio, wipers, or heater fan may not turn on, or they might cut out intermittently. This points to a problem with the 'Accessory' or 'Run' position contacts in the switch.
Choosing the Right Aftermarket Ignition Switch
For a vehicle like the 1987 V1500, finding a new OEM part from GM is highly unlikely. The aftermarket is your main source. Quality and price can vary, so understanding the brands is key.
Brand Tiers
- Premium Aftermarket (Standard Ignition): Standard Motor Products (SMP) is a well-respected brand used by many professional mechanics. Their parts are known for meeting or exceeding original specifications, offering the best reliability and fit for an aftermarket option. If you want the closest thing to original quality and long-term peace of mind, this is your best bet.
- Mid-Grade Aftermarket (Rostra Powertrain): Rostra is a known manufacturer of automotive electronic components. This brand offers a solid balance of quality and value, making it a good choice for daily drivers and budget-conscious owners who still want a reliable part.
- Budget Aftermarket (Replacement): This category includes various lower-cost, often unbranded or store-brand parts. While the price is attractive, quality can be inconsistent. These switches may work fine initially but might have a shorter lifespan or less precise feel. This is a viable option if budget is the absolute top priority, but be aware of the potential trade-offs.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket | $20.77 - $41.93 |
| Shop Labor | $150 - $225 |
| New OEM | (Not commonly available) |
Frequently Asked Questions
Can I replace the ignition switch myself?
Yes, this is a DIY-friendly job if you have the right tools and some patience. The switch is on the steering column, and you'll need to remove the lower dash panels to get to it. The key tools required are a steering wheel puller and a lock plate compressor, which can often be rented from auto parts stores.
Is it the ignition switch or the starter?
If you turn the key and hear a single, solid click, the ignition switch is likely sending power, and the problem may be your starter or starter solenoid. If you turn the key and get absolutely nothing—no click, no lights dimming—the ignition switch itself is a primary suspect. Testing for power at the starter's 'S' terminal when a helper turns the key can confirm if the switch is sending the signal.
Are there any recalls on the 1987 GMC V1500 ignition switch?
No. Searches of the NHTSA database show no specific ignition switch recalls for the 1987 GMC V1500. The widely publicized GM ignition switch recalls from the 2010s affected much newer cars (like the Chevy Cobalt) and do not apply to your truck.
Is the ignition switch the same as the ignition lock cylinder?
No. The ignition lock cylinder is the mechanical part you put your key into. The ignition switch is the separate electrical component that the lock cylinder controls. It's possible for one to fail without the other, but they are often replaced at the same time since the labor to access them is similar.
Technical Specifications
OEM Part Numbers: 26061331 26075995
Located on the steering column, activated by a rod connected to the ignition lock cylinder.
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.
- GMC V1500: