Oldsmobile Aurora 1995-2003 Automatic Transmission Mount Replacement Guide
Stop the clunks and vibrations by understanding which transmission mount your Aurora needs.
- Symptoms like clunking and vibration can also be caused by known transmission solenoid issues in the Aurora; proper diagnosis is key.
- Your Aurora has multiple mounts; correctly identify the failed mount's position (front, rear, side) before ordering.
- Aftermarket brands like Anchor, DEA, and Westar are budget options, but some owners report short lifespans on Auroras.
- Some mount replacements are very difficult and may require lowering the subframe, significantly increasing labor time and cost.
Symptoms of a Failing Transmission Mount
When a transmission mount wears out, it can no longer hold the transmission securely. The rubber cracks or collapses, or the fluid in hydraulic mounts leaks out. This failure leads to noticeable symptoms while driving.
- Clunking or Banging Noises: The most common symptom is a loud clunk or bang when you shift gears, especially from Park to Drive or Reverse. You might also hear this noise during hard acceleration or braking as the transmission shifts its weight.
- Excessive Vibration: A worn mount can't absorb vibrations, so you'll feel them in the cabin, through the floor, and in the steering wheel. This shaking often gets worse when the car is in gear and stopped, or during acceleration.
- Rough Shifting: The transmission may feel like it's jerking or hesitating when it shifts gears. This is because the misalignment caused by a bad mount can affect the shift linkage and internal components.
Could It Be Something Else?
The Oldsmobile Aurora, particularly from 1995-1999, is known for transmission solenoid failures that can also cause harsh shifting and clunking noises. If your issue is primarily rough shifting, especially when the car is warm, it's wise to rule out a transmission solenoid issue before replacing mounts. A bad mount usually causes noise and vibration from physical movement, while a bad solenoid causes an internal shifting problem.
Choosing the Right Aftermarket Mount
Since Oldsmobile is a discontinued brand, genuine OEM parts are scarce and often expensive New Old Stock (NOS). This makes aftermarket parts the primary choice for most owners. However, quality can vary significantly.
Your Aurora doesn't have just one transmission mount; it has a system of mounts working together with the engine mounts. Common ordering mistakes happen when the wrong position mount is purchased. Be sure to identify if you need the front, rear, or side (often hydraulic) mount.
Aftermarket Brand Quality
For the Aurora, most available aftermarket brands like Anchor, DEA, and Westar are considered economy-level options. Forum discussions among owners show mixed results.
- Standard/Economy Tier (Anchor, DEA, Westar): These brands offer an affordable solution to get the car back on the road. They are widely available and fit the budget. However, some owners report that these mounts may not last as long as the original, with some experiencing failures in as little as a few months. They are a functional replacement but may lack the durability and precise fit of the original part.
- Standard Tier (Pioneer): While more known for cables, Pioneer also offers mounts. In general discussions, they are sometimes regarded as having a slightly better finish and quality control than other economy brands, appearing closer to the factory design.
A Note on Longevity
Some Aurora owners on forums suggest that due to the high torque of the V8 engine and the specific dynamics of the chassis, some economy aftermarket mounts may fail prematurely. If you plan on keeping your Aurora long-term, consider searching for a high-quality New Old Stock (NOS) part or a good used OEM mount from a salvage yard, as these often provide the best durability.
Replacement Costs for 1995-2003 Oldsmobile Aurora
The cost to replace a transmission mount depends on which mount is being replaced and the labor involved. Some mounts are easy to access, while others are much more difficult.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Mount | $30 - $115 |
| Shop Labor | $150 - $450 |
| Total Estimated Cost | $180 - $565 |
Note: Labor costs can vary greatly. Some mounts on the Aurora are simple to replace in about an hour. However, certain mounts, like the front or torque-axis mounts on some models, may require lowering the engine subframe, a job that can take 3-4 hours.
Frequently Asked Questions
How many transmission mounts does my Aurora have?
The Oldsmobile Aurora uses a system of several mounts. This typically includes a front mount, a rear mount, and a side mount, which work with the engine mounts to control the powertrain. It's important to inspect your vehicle to see which specific mount has failed.
Should I replace my engine mounts at the same time?
It is highly recommended. The engine and transmission mounts work together as a system to support the drivetrain. When one mount fails, it puts extra stress on all the others, causing them to wear out faster. If you are replacing a high-mileage transmission mount, the engine mounts are likely worn as well. Replacing them together restores the entire system and prevents a cascading failure.
Can I drive with a bad transmission mount?
It is not recommended. While the car may still be drivable for short distances, continuing to drive with a failed mount is unsafe. The excessive movement can damage other critical parts, including CV axles, exhaust pipes, hoses, and even the transmission itself. The risk of further, more expensive damage is high.
Is replacing a transmission mount a DIY job?
It depends on the mount. Some, like the rear or side mounts, can be relatively easy for a DIY mechanic with a good set of tools and a floor jack to support the transmission. However, other mounts, particularly the front mount on second-generation models, can be very difficult and may require lowering the subframe. If you are not comfortable with a complex job, it is best to leave this to a professional mechanic.
Technical Specifications
The Oldsmobile Aurora uses a system of mounts, including solid rubber and hydraulic-filled types, depending on the position and model year. There is no single part number for all applications.
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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