Cadillac Brougham Window Motor Guide for 1987-1992 Models
Everything you need to know before replacing a window motor on your 1987-1992 Cadillac Brougham.
- New aftermarket brands like Dorman and Cardone are the most realistic replacement option, as new OEM parts are unavailable.
- Be prepared to drill out the original rivets that hold the factory motor to the regulator assembly.
- The window regulator is spring-loaded and dangerous; always tape the window in the 'up' position before starting the repair.
- Always order the motor for your specific door location (e.g., front driver side), as they are not interchangeable.
Symptoms of a Failing Window Motor
A window motor on your Brougham will usually give you a few warnings before it stops working completely. If you notice any of these signs, the motor is likely on its way out.
- Slow or Straining Window: The most common symptom is a window that moves up and down much slower than it used to. It may seem like it's struggling, especially on the way up.
- Intermittent Operation: The window works sometimes, but not others. You might press the switch and get nothing, then try again later and it works. This can happen when the motor overheats from strain.
- Clicking or Whirring from the Door: You press the switch and hear a clicking or whirring sound from inside the door, but the window doesn't move. This means the switch is sending power, but the motor itself is broken.
- Window Drops or is Stuck: The window may be stuck in one position, or it might drop down into the door on its own. While this can also be a bad regulator, it's often tied to a failed motor.
Choosing the Right Aftermarket Window Motor
For a classic vehicle like the 1987-1992 Brougham, new original equipment (OEM) motors from GM are generally no longer available. This makes new aftermarket parts the most practical and common choice. The two main brands you will find are Dorman and Cardone.
| Brand | General Reputation & Quality |
|---|---|
| Dorman | A widely available aftermarket brand. Some owners report that Dorman motors can be slightly noisier or faster than the originals but are reliable. However, other users in forums have had negative experiences with Dorman quality on other parts. They are a standard, budget-friendly replacement. |
| Cardone | Cardone offers both new and remanufactured parts. Like Dorman, they are a budget-conscious option. Forum discussions show mixed reviews; some users avoid the brand due to past failures with other components, while others find them acceptable for the price. |
The Verdict: For this Brougham, both Dorman and Cardone are viable options. Since new OEM parts are not a realistic choice, the decision comes down to availability and price. Neither brand is likely to match the silent operation of the original 1980s motor, but they will get your window working again.
Important: Check for Rivets!
The original factory window motors were attached to the window regulator with steel rivets. To replace only the motor, you must drill these rivets out. Your new aftermarket motor will include bolts and nuts to make installation easier. Be prepared with a drill and sharp drill bits.
Cost of Replacing a 1987-1992 Brougham Window Motor
| Part or Service | Estimated Cost |
|---|---|
| New Aftermarket Window Motor | $55 - $71 |
| Shop Labor | $150 - $250 |
| Total Professional Replacement | $205 - $321 |
Pro Tip: Lubricate While You're In There
While you have the door panel off, it's a great time to clean and lubricate the window tracks and regulator pivot points. Use a silicone spray lubricant. Do not use heavy grease, as it can get thick and sticky in cold weather, making the new motor work harder.
Frequently Asked Questions (FAQ)
Can I replace just the motor myself?
Yes, this is a manageable DIY job for someone with basic tools and experience. The most difficult steps are carefully removing the door panel without breaking the old plastic clips and drilling out the factory rivets. You must also be very careful with the spring-loaded regulator.
What is the danger with the window regulator spring?
The window regulator has a large, powerful spring that helps lift the heavy window glass. This spring is under a lot of tension. If you unbolt the motor from the regulator without securing the assembly, the arms can snap shut with enough force to cause serious injury. Always tape the window securely in the full 'up' position before you start, and handle the regulator with extreme caution if you remove it from the door.
Are the front and rear window motors the same?
No. The motors for the front doors, rear doors, driver's side, and passenger's side are often different parts. Always order the motor that is specific to the correct door location on your Brougham.
I found a motor from a different year Brougham, will it fit?
Be careful. While parts across the 1987-1992 range are often similar, one owner reported that a previous repair on his car used a regulator from a different year, which required a different motor. It's always best to match the part to your specific year or, if possible, verify any part numbers on your old motor before ordering.
Were there any recalls for the window motors on the 1987-1992 Brougham?
No, searches of the National Highway Traffic Safety Administration (NHTSA) database show no recalls or specific technical service bulletins (TSBs) for window motor failures on this vehicle. This is considered a standard wear-and-tear item.
Technical Specifications
This is a 12V DC electric motor. Aftermarket replacements from brands like Dorman (e.g., part number 742-150) are designed for direct fitment but require using the included bolts instead of the original rivets.
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.
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