1982-1988 Cadillac Cimarron Trunk Lock Replacement Guide
Secure your trunk again with a reliable new aftermarket trunk lock.
- New aftermarket parts are the most reliable option, as new OEM parts are no longer available.
- Replacement is a simple DIY job that most owners can complete in under an hour with basic tools.
- The new lock will come with a new set of keys; your original keys will not work.
- The Cimarron shares parts with other GM J-body cars, which can widen your search for a replacement lock.
Is Your Trunk Lock Failing?
Over time, the trunk lock on a classic car like the Cadillac Cimarron can wear out. Corrosion from weather and simple mechanical wear from years of use are the most common culprits. You might notice the key is hard to turn, or it turns but nothing happens. This can be frustrating and also poses a security risk for anything you keep in your trunk.
Symptoms of a Bad Trunk Lock
Watch for these common signs of a failing trunk lock:
- Key is difficult to insert or turn: The internal tumblers may be worn, corroded, or seized.
- Key turns, but the trunk won't open: The arm connecting the lock cylinder to the latch rod may be broken or disconnected.
- The trunk lid won't latch closed: While often a latch issue, a broken lock mechanism can sometimes interfere with proper closing.
- Key gets stuck in the lock: Worn or damaged components inside the lock can trap the key.
Choosing Your New Aftermarket Trunk Lock
For a vehicle like the 1982-1988 Cimarron, new Original Equipment Manufacturer (OEM) parts from GM are no longer produced. Your choice is between a used OEM part from a salvage yard or a new aftermarket part. A new aftermarket lock is often the better choice, as it's made from fresh materials and hasn't been exposed to decades of weather and use.
Brand Options
You have a couple of choices when it comes to aftermarket brands:
- Standard Ignition (Standard Motor Products): A well-respected brand in the aftermarket world, Standard Ignition has been making quality replacement parts for decades. Their parts are known for meeting or exceeding original specifications and are a trusted choice for professional mechanics. A lock from Standard Ignition is a reliable, high-quality option.
- Replacement: This is a value-focused brand that offers affordable parts that get the job done. For a straightforward mechanical part like a trunk lock, a "Replacement" brand part can be a good, budget-friendly choice for a daily driver or a car where keeping costs down is a priority.
Cost of Trunk Lock Replacement
| Part Type | Price Range |
|---|---|
| New Aftermarket (Replacement, Standard Ignition) | $14.75 - $31.10 |
| Used OEM (Salvage Yard) | $10 - $30 |
| Shop Labor | $50 - $100 |
A Note on GM J-Body Cars
The Cadillac Cimarron was built on GM's J-body platform. This means it shares many parts with other cars from that era, including the Chevrolet Cavalier, Buick Skyhawk, Oldsmobile Firenza, and Pontiac Sunbird. If you have trouble finding a part listed specifically for the Cimarron, searching for a trunk lock for one of these other models may yield a compatible part.
Frequently Asked Questions
Will the new trunk lock use my car's original key?
No. A new aftermarket trunk lock cylinder will come with its own set of new keys. You will need to add this new key to your keychain. The old trunk key will no longer work.
Is replacing the trunk lock a difficult job?
No, this is a great DIY project for most car owners. The process is straightforward and requires basic hand tools. It typically involves removing the trunk liner, disconnecting a clip and rod, and unbolting the old lock assembly.
Are there any recalls for the Cimarron trunk lock?
No. A search of the National Highway Traffic Safety Administration (NHTSA) database shows no recalls or technical service bulletins (TSBs) specifically related to the trunk lock mechanism for the 1982-1988 Cadillac Cimarron.
What is the difference between the trunk lock and the trunk latch?
The trunk lock is the cylinder you put your key into. The trunk latch is the mechanism with a hook or claw that physically holds the trunk lid shut. The lock cylinder moves a rod that tells the latch to release.
Technical Specifications
Includes lock cylinder, a new set of keys, and a retaining clip. The lock has a chrome finish.
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.
- Cadillac Cimarron: