Guide to the Automatic Transmission Mount for 1983-1997 Buick Century
Stop the clunking and vibrations from your transmission by understanding the signs of a bad mount and how to choose the right replacement.
- A loud clunk when shifting into gear is a primary symptom of a failed transmission mount on this Century.
- Aftermarket brands like Anchor, DEA, and Westar are the most common and affordable options, suitable for this vehicle's age.
- While you can drive with a bad mount, replacing it promptly prevents damage to other parts like axles and hoses.
- This is a DIY-friendly repair if you can safely support the transmission with a jack.
Signs of a Failing Transmission Mount
When the transmission mount on your Century fails, the symptoms are usually obvious. The most common signs are new noises and vibrations that weren't there before. Because the mount is no longer holding the transmission securely, you may experience the following:
- Clunking or Thudding Noises: A loud clunk or bang when you shift from Park into Drive or Reverse is a classic symptom for this vehicle. You might also hear these noises when accelerating or braking suddenly.
- Increased Vibrations: You may feel excessive vibrations through the floor, seats, or steering wheel, especially when the car is idling or accelerating. This happens because the worn-out rubber can no longer absorb the transmission's vibrations.
- Excessive Engine Movement: A completely failed mount will allow the engine and transmission to move or lurch more than they should. You can sometimes see this by having a helper hold the brakes and shift between Drive and Reverse while you watch the engine bay. If the powertrain lifts or jerks significantly, a mount has likely failed.
Don't Ignore a Bad Mount
Continuing to drive with a broken transmission mount can cause more significant problems. The excessive movement can put stress on other parts like CV axles, exhaust components, hoses, and wiring, leading to more expensive repairs down the road.
Choosing the Right Aftermarket Mount
For a vehicle as old as the 1983-1997 Century, new original equipment (OEM) parts are typically discontinued and hard to find. The most practical choice is a new aftermarket mount. Brands like Anchor, DEA, Pioneer Cable, and Westar are widely available and affordable.
Here’s an honest look at what to expect from these brands:
- Brand Tier: Anchor, DEA, and Westar are generally considered economy-level brands. They provide a low-cost solution to get your car back on the road. Pioneer is sometimes seen as having slightly better fit and finish.
- Quality Assessment: Based on forum discussions and mechanic reviews, the quality of these budget-friendly brands can be mixed. Some owners report they work fine for years, while others have experienced premature failure or fitment issues. However, for an older daily driver, they are often a perfectly reasonable and practical choice. The metal brackets may be thinner or the rubber compound less durable than the original part, but they will solve the immediate problems of a completely failed mount.
Pro Tip: Your Buick Century has several engine and transmission mounts. When one fails, it puts extra stress on the others. It's a good practice to inspect all the mounts and consider replacing them in sets for a longer-lasting repair.
Estimated Replacement Costs
The cost to replace a transmission mount depends on whether you do it yourself or hire a professional. The parts themselves are inexpensive.
| Item | Estimated Cost |
|---|---|
| New Aftermarket Mount | $16.83 - $37.17 |
| Shop Labor | $122 - $179 |
| Total Professional Replacement | $217 - $274 |
Frequently Asked Questions (FAQ)
Is it safe to drive with a bad transmission mount?
You can drive the vehicle, but it's not recommended for long. A bad mount can cause a rough ride and allow excessive movement that can damage other, more expensive components like axles, hoses, and exhaust parts. It's best to get it replaced as soon as possible.
Can I replace the transmission mount myself?
Yes, this is a feasible DIY job for someone with basic mechanical skills and the right tools. The process involves safely supporting the transmission with a jack and a block of wood, unbolting the old mount, and installing the new one. Always use jack stands for safety when working under your vehicle.
How do I know if it's a transmission mount or an engine mount?
The symptoms are very similar and they often wear out around the same time. A pop or clunk when shifting from Park to Drive/Reverse is a common symptom of a bad mount on either the engine or transmission side. The best way to know for sure is to visually inspect all the mounts for cracks, separated rubber, or excessive movement.
Are there any recalls for the 1983-1997 Buick Century transmission mount?
No, searches of the National Highway Traffic Safety Administration (NHTSA) database did not find any specific recalls for the transmission mounts on this generation of Buick Century. Failures are typically due to age and normal wear and tear.
Technical Specifications
The mount consists of a steel bracket and a rubber insulator designed to bolt to the vehicle's subframe and the transmission case. Its primary function is to support the transmission and absorb drivetrain vibrations.
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.
- Buick Century: