Chevrolet Blazer Engine Mount Guide: 1989-2006
Stop excessive engine vibration and clunking noises in your S-10 Blazer.
- Bad engine mounts cause clunking noises, heavy vibration, and visible engine movement.
- For most owners, a standard rubber replacement from a brand like Anchor is a good, affordable choice.
- For heavy-duty use or a long-lasting upgrade, consider polyurethane mounts from Energy Suspension, but expect more vibration.
- It is strongly recommended to replace both engine mounts at the same time to ensure proper alignment and prevent future issues.
Is it time to replace your Blazer's engine mounts?
The engine mounts on the 1989-2006 S-10 Blazer are known to wear out, especially the original rubber ones which are now decades old. The rubber can dry out, crack, or get soaked with oil, causing it to fail. When this happens, you'll notice some distinct problems. A common issue on these trucks is the rubber separating completely, which can cause the engine to move excessively.
Symptoms of a Bad Engine Mount
- Excessive Vibration: You might feel a strong vibration in the cabin, especially when idling or when the air conditioning is on.
- Clunking or Thumping Noises: Loud clunks from the engine bay when you accelerate, brake, or shift gears are a classic sign. This is the sound of the engine moving and hitting other parts.
- Visible Engine Movement: Open the hood, have a friend put the vehicle in drive (with the brake held firmly), and lightly press the gas. If you see the engine lurch or lift more than an inch or two, the mounts are likely bad.
- Fan Hitting the Shroud: On some Blazers, a collapsed mount can cause the engine to sag, making the cooling fan hit its plastic shroud.
Don't Ignore a Bad Mount
Continuing to drive with a broken engine mount can cause serious problems. The constant movement can damage other components like transmission linkage, exhaust manifolds, belts, and hoses. In severe cases, the engine can move enough to cause a loss of control or damage to the transmission.
Choosing the Right Aftermarket Engine Mount
For a vehicle this age, aftermarket mounts are the most practical and affordable choice. OEM mounts may be hard to find or discontinued. You have two main choices for your Blazer:
Standard Replacement (Rubber)
These mounts are designed to be like the original factory parts. They provide a smooth, quiet ride by effectively absorbing engine vibrations. Brands like Anchor, DEA, and Westar are common choices. They are affordable and a good option for daily driving. However, quality can be inconsistent between brands, with some owners reporting premature failure with budget options. Anchor is often seen as a decent standard replacement.
Performance Upgrade (Polyurethane)
Energy Suspension is a popular brand that offers polyurethane engine mounts for the Blazer. Polyurethane is a much stronger and more durable material than rubber. It's resistant to oil and other chemicals that can destroy rubber mounts. These mounts will significantly reduce engine movement, which can improve throttle response. The trade-off is that they transmit more engine vibration into the cabin, so your ride might feel a bit rougher and noisier. They are a great choice for performance applications or for owners who want a mount that will last a lifetime.
Pro Tip: Replace in Pairs
Your Blazer has two engine mounts and one transmission mount. It's highly recommended to replace both engine mounts at the same time. If one has failed, the other is likely not far behind. Replacing them together ensures proper engine alignment and prevents the new mount from being stressed by an old, worn-out one.
Cost of Replacing Chevrolet Blazer Engine Mounts
| Item | Estimated Cost |
|---|---|
| Aftermarket Engine Mount (Single) | $16 - $52 |
| Shop Labor | $150 - $300 |
| Total (DIY) | $32 - $105 (for two mounts) |
| Total (Installed at Shop) | $182 - $405 |
Cost estimates are general and may vary by location and specific vehicle configuration.
Frequently Asked Questions
How many engine mounts does a 1989-2006 Blazer have?
The Chevrolet S-10 Blazer typically has two engine mounts and one transmission mount. The transmission mount supports the rear of the powertrain and should also be inspected for wear.
Is replacing engine mounts a DIY job?
For a home mechanic with the right tools, yes. The process involves supporting the engine from below with a jack and a block of wood, then unbolting the mounts from the frame and engine. Access can be tight, especially on 4WD models, and may require removing other components like the starter or steering shaft for clearance. It can be a challenging job.
What's the difference between rubber and polyurethane mounts?
Rubber mounts provide the smoothest and quietest ride, like the original factory parts. Polyurethane mounts are much more durable and reduce engine movement for better performance, but they will increase the amount of vibration you feel inside the truck.
Were there any recalls for Blazer engine mounts?
There are no specific recalls on the NHTSA database for engine mounts on the 1989-2006 Chevrolet Blazer. Any failures are typically due to age and wear.
Technical Specifications
The 1989-2006 Chevrolet Blazer uses two engine mounts and one transmission mount. The design for the 4.3L V6 is known to be a weak point, with the rubber prone to separating or collapsing over time.
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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.
- Chevrolet Blazer:
- 🛍️ Shop This Part
- Is it time to replace your Blazer's engine mounts?
- Symptoms of a Bad Engine Mount
- Don't Ignore a Bad Mount
- Choosing the Right Aftermarket Engine Mount
- Standard Replacement (Rubber)
- Performance Upgrade (Polyurethane)
- Pro Tip: Replace in Pairs
- Cost of Replacing Chevrolet Blazer Engine Mounts
- Frequently Asked Questions
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