Chevrolet Impala Door Lock Kit Replacement Guide (1978-1997)
Worn or sticky door locks on your 1978-1997 Impala? Here is what you need to know before you buy a new lock kit.
- For a 1978-1997 Impala, an aftermarket door lock kit is the most practical and cost-effective solution.
- The replacement is a simple, mechanical job that is highly suitable for DIY, requiring only basic tools.
- A new kit will provide you with a new set of keys for the doors; they will not match your ignition.
- Standard Ignition is a reliable brand for this part, offering a direct-fit replacement.
Is Your Impala's Door Lock Sticking or Jammed?
If you own a classic 1978-1997 Chevrolet Impala, you know these cars are built to last. However, after decades of use, simple mechanical parts like door locks can wear out. The key might become hard to turn, or it might not go in at all. This is usually due to wear and tear on the small metal parts inside the lock cylinder. Fortunately, replacing the entire door lock kit is a straightforward and affordable repair.
Manual Locks vs. Power Locks
This guide is for the mechanical door lock cylinders and keys. Many search results show problems with power lock actuators on newer Impalas. Those are electric motors that fail. The 1978-1997 models primarily use simple, durable mechanical locks that wear out over time.
Symptoms of a Failing Door Lock Cylinder
- Key is difficult to insert or remove: This often means the internal tumblers are worn, or debris has gotten inside the lock.
- Key won't turn: The cylinder may be seized or the tumblers are so worn they no longer align with the key.
- Lock feels loose or sloppy: The retaining clip holding the cylinder in the door might be broken or loose, or the cylinder housing itself is worn.
- You need a different key for each door: If a previous owner replaced only one lock, you might be carrying multiple keys. A new kit ensures one key works for both doors.
Choosing an Aftermarket Door Lock Kit
For a vehicle from this era, finding new Original Equipment Manufacturer (OEM) parts from GM is nearly impossible. The good news is that aftermarket parts are readily available, affordable, and reliable for this specific component. Aftermarket brands offer a practical solution that meets or exceeds the original quality for a simple mechanical part like a lock cylinder.
Standard Ignition (Standard Motor Products): Standard is a well-regarded aftermarket brand known for producing quality replacement parts that fit correctly. Their door lock kits are a dependable choice and are widely available. Customer reviews often note that they are a good quality replacement, though it's important to remember they come with a new set of keys that will not match your existing ignition key.
Pro Tip: Lube Your New Locks
When you install your new lock cylinders, apply a small amount of graphite lubricant. This will help them operate smoothly and extend their lifespan. Avoid using oil-based lubricants like WD-40, as they can attract dirt and gum up the lock over time.
Cost of Replacing a Door Lock Kit (1978-1997 Impala)
| Part/Service | Estimated Cost | Notes |
|---|---|---|
| New Aftermarket Door Lock Kit | $28 - $32 | Includes two lock cylinders, keys, and hardware. |
| Shop Labor | $100 - $180 | Typically about 1 hour of labor. |
| DIY Savings (Total) | $100 - $180 | This is a very manageable DIY project. |
Frequently Asked Questions
Is this a difficult job to do myself?
No, this is a great project for a beginner. The process involves removing the inner door panel, reaching inside to unhook a clip and a rod, and swapping the old cylinder for the new one. Basic hand tools are all that's required.
Will the new keys work with my car's ignition?
No. An aftermarket door lock kit will come with a new set of keys that only work for the new door locks. You will need to carry your original key for the ignition and trunk, and the new key for the doors.
What comes in a typical door lock kit?
A standard kit includes two door lock cylinders (for the driver and passenger side), two matching keys, and the retaining clips needed to hold the cylinders in the door.
Should I replace both locks at the same time?
Yes. Kits are sold with two locks and matching keys. This ensures both doors work perfectly with a single new key and that both locks are equally fresh and secure.
Technical Specifications
OEM Part Numbers: 15773575 89024246 12451813 89024353
Kit typically includes two chrome-plated lock cylinders, two matching keys, and retaining clips. Designed for manual locking systems.
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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.