1987 GMC V2500 Door Lock Kit: A Guide to Replacement and Repair
If your key is getting hard to turn or the lock feels sloppy, it's time to look at replacing the door lock cylinders on your truck.
- Failures are due to normal mechanical wear; no recalls have been issued for this part.
- Replacement is a straightforward DIY job that takes 1-2 hours with basic tools.
- You will need to transfer the small metal arm from your old lock to the new one for it to work.
- Decide if you want a kit with a matching ignition cylinder or if you are okay with having a separate key for the doors.
Signs of a Failing Door Lock Kit
On a classic Square Body truck like your 1987 V2500, door lock problems are almost always due to simple mechanical wear. After decades of use, the brass tumblers inside the lock cylinder wear down, and the key no longer fits snugly. Here’s what to watch for:
- Key is Hard to Turn: You have to jiggle the key or use extra force to get the lock to turn. This is a classic sign of worn internal tumblers.
- Sloppy Key Fit: The key feels loose inside the lock, or it can be removed when it's not in the straight up-and-down position.
- Lock Doesn't Work at All: You can turn the key, but nothing happens. This usually means the small metal arm on the back of the lock cylinder has broken or disconnected from the internal door rod.
Manual vs. Power Locks
This guide focuses on the mechanical door lock cylinders operated by your key. If your truck has power locks that aren't working, the problem is likely electrical. Common issues include failed actuators inside the door, a bad relay (often found above the emergency brake pedal), or broken wires in the rubber boot between the door and the cab.
Choosing the Right Aftermarket Kit
For a vehicle from 1987, finding new original equipment (OEM) parts from a dealer is nearly impossible. The market is served by aftermarket manufacturers who specialize in creating replacement parts that meet or exceed the original specifications.
Standard Ignition Brand Quality
Standard Ignition (also known as Standard Motor Products or SMP) is a well-regarded brand often used by professional mechanics. They have a long history of making quality replacement parts. Their door lock kits are typically made with solid brass tumblers and die-cast zinc cores, similar to the original parts, ensuring they fit and function correctly.
Pro Tip: Some aftermarket kits come with only the two door locks, meaning you will have a separate key for your doors and ignition. Other, more complete kits include the door locks and a matching ignition lock cylinder so you can continue using one key for everything, just like the factory setup. Check what is included in the kit before you buy.
Estimated Replacement Costs
The cost to replace your door lock cylinders is very reasonable, especially if you do the work yourself. The job is straightforward and does not require expensive, specialized tools.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Kit (Standard Ignition) | $28 - $60 |
| New OEM | Generally Unavailable |
| Shop Labor | $100 - $200 |
Frequently Asked Questions (FAQ)
Is replacing the door lock kit a difficult job?
No, this is a very DIY-friendly job for someone with basic tools. The process involves removing the door panel, releasing a clip to remove the lock cylinder, and then swapping it out. The most common challenge is removing the window crank handle clip without losing it.
Do I need to transfer any parts from the old lock?
Yes. In almost all cases, you must transfer the small metal lever, or 'arm', from the back of your old lock cylinder to the new one. This arm is what connects the lock to the rods inside the door. It is held on by a small clip that can be carefully removed and reused.
Are there any recalls on the 1987 GMC V2500 door locks?
No. There are no recalls or technical service bulletins (TSBs) from GMC or the NHTSA for the door lock systems on this vehicle. Failures are simply due to age and normal wear.
My power locks don't work. Will this kit fix that?
No. This kit replaces the mechanical key cylinder. Power lock failures are electrical and are usually caused by a bad switch, a failed power lock actuator inside the door, a faulty relay, or a broken wire.
Technical Specifications
Kit typically includes two door lock cylinders, gaskets, retaining clips, and a set of matching keys. Some kits may also include a matching ignition 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 V2500: