Ignition Switch Guide for the 1963-1965 GMC PB2500 Series
Having trouble starting your classic GMC van? Your ignition switch might be the culprit.
- A failing ignition switch can cause a no-start condition, sudden stalling, or flickering lights.
- For this vintage, a quality aftermarket part from a brand like Standard Ignition is the best practical option.
- Replacement is a DIY-friendly job that usually takes less than an hour with basic tools.
- Always disconnect the battery before beginning work and compare the old switch to the new one to confirm fitment.
Is Your Ignition Switch Failing?
For a vintage truck like the 1963-1965 GMC PB2500 Series, electrical problems can often be traced back to the ignition switch. It's a part that gets used every single time you drive. Over decades, the internal contacts wear out, causing a range of frustrating issues. If you're experiencing problems, it's a good idea to check the switch and its wiring connector for signs of melting or damage.
Common Symptoms of a Bad Ignition Switch:
🎬 Watch this video to see common symptoms of a bad switch.- Engine won't start or crank: You turn the key and get nothing, not even a click from the starter.
- Truck stalls suddenly: The engine might cut out while you're driving, as if you turned the key off. This can happen when hitting a bump, which jiggles the worn internal contacts.
- Intermittent power to accessories: Your radio, lights, or dashboard gauges might flicker or stop working altogether.
- Key is hard to turn: If the key feels stiff or gets stuck between positions, the mechanical part of the switch assembly could be failing.
- No power when key is in 'On' or 'Accessory' position: If nothing happens before you try to crank the engine, the switch isn't sending power correctly.
Safety First: Disconnect the Battery
Before starting any work on your truck's electrical system, always disconnect the negative battery terminal. This prevents accidental shorts that could damage components or cause injury.
Choosing the Right Aftermarket Ignition Switch
For a vehicle from the mid-1960s, finding a New Old Stock (NOS) OEM ignition switch is nearly impossible and would be very expensive. Aftermarket parts are the most practical and common solution. The good news is that the ignition switch for the PB2500 Series is a simple, non-transponder part that is shared with many other, more common GM trucks of the era, like the C/K and P-Series. This makes finding a quality replacement easier.
Available Brands:
- Standard Ignition (Standard Motor Products): A long-standing brand in the aftermarket, Standard Ignition is generally considered a reliable choice for ignition components. They have a reputation for making quality parts for older American vehicles.
- Rostra Powertrain: Rostra is another established aftermarket manufacturer that produces a wide range of automotive parts, including electrical components.
For a critical part like an ignition switch, choosing a reputable aftermarket brand like Standard Ignition is a wise investment. While both available brands will work, Standard has a long history and positive feedback from mechanics and DIYers.
Aftermarket Ignition Switch Cost for 1963-1965 GMC PB2500 Series
| Part Type | Price Range |
|---|---|
| New Aftermarket Ignition Switch | $40.61 - $51.50 |
| Shop Labor | $75 - $150 |
Frequently Asked Questions (FAQ)
Is replacing the ignition switch a difficult job on my PB2500?
No, it's generally a straightforward job for someone with basic tools. The switch is typically located on the dashboard and held in place by a bezel nut. 🎬 See how to remove the ignition switch from the dashboard. You'll need to disconnect the battery, remove the bezel, unplug the wiring connector from the back of the switch, and then install the new one in reverse order. You may also need to remove the lock cylinder first, which is done by turning the key to the 'accessory' position and depressing a small pin with a paperclip.
Do I need a special tool to remove the switch?
You might need a special, but inexpensive, ignition switch bezel tool to unscrew the retaining nut on the dashboard without scratching the paint. Otherwise, standard hand tools like screwdrivers and a paperclip are usually all that's required.
Will a Chevy truck ignition switch fit my GMC?
Yes, in most cases. During this era, GMC and Chevrolet trucks shared many parts, including electrical components like the ignition switch. It's always best to compare the new part to your old one before installation to ensure the connections and mounting points match.
🎬 Learn more about troubleshooting and wiring for vintage GMC trucks.Can a bad ignition switch drain my battery?
Yes. If the switch fails to completely cut power when you turn the key to the 'Off' position, it can leave certain electrical circuits active, leading to a drained battery.
Helpful Videos
Technical Specifications
Dash-mounted, non-transponder ignition switch with accessory, lock, off, on, and start positions.
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.