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That dull thud when you hit the gas, the shudder at a stoplight, the feeling that your engine is about to leap out of the bay — that’s your motor mounts failing. These rubber-and-steel cushions hold your engine in place and soak up its vibration, and when they wear out, the whole truck lets you know. Replacing them with one of the five sets below restores smooth shifts and kills the clunk on the most common GM trucks.
I’m Mo Maruf — the founder and writer behind GoCarLife. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Here is what matters when you shop for truck motor mounts: exact fit for your year and drivetrain, the rubber’s ability to kill vibration, and how much work the install will actually be. The genuine OE part costs more but carries a factory warranty, while budget sets save real money if you can handle a little fiddling.
Our Picks at a Glance
How To Choose The Best Truck Motor Mounts
Motor mounts are rubber-and-steel cushions that bolt the engine to the frame. The rubber bonded to steel absorbs vibration and keeps the engine from slamming into the frame. When that rubber splits or sags, every shift and bump turns into a clunk.
Fitment is everything
Before anything else, confirm the mount matches your exact truck. Engine size, model year, and drivetrain all change the part number. A mount built for a 2007-2014 Silverado 1500 will not bolt onto a 1997 C10. Some kits are explicitly for Rear-Wheel Drive (RWD) models only, so check “Your Garage” on Amazon or your VIN before ordering.
OEM versus aftermarket
Genuine GM parts come with the factory warranty and proven durability, but they cost more. Aftermarket sets are cheaper and often fine, yet quality control varies — some buyers report bolt holes that need a little persuasion. If you want zero surprises and a warranty, pay for OE. If you want to save money and can handle minor fit adjustments, an aftermarket set works.
Quick Comparison
| Model | Best For | Fitment | Set Size | Material | Amazon |
|---|---|---|---|---|---|
| 15854941 Engine Motor Mount★ Best Overall | 2007-2014 GM Trucks & SUVs | 2007-2014 Tahoe, Suburban, Yukon, Silverado 1500 | 2 Piece | Rubber | Amazon |
| LS Swap Motor MountsTop Performer | 1973-1998 Square Body LS Swaps | 1973-1998 C/K 1500-3500, 2WD & 4WD | Pair | Alloy Steel | Amazon |
| 2PCS Left and Right Engine Mounts | 99-06 Silverado & Tahoe V8 | 99-06 Silverado, Tahoe, Sierra 1500 V8 | 2 Piece | Alloy Steel | Amazon |
| Engine Motor Transmission Mount Kit | Complete 3-piece RWD replacement | 2007-2014 GM RWD Trucks & SUVs | 3 Piece | Alloy Steel | Amazon |
| GM Genuine Parts 15854939 | Factory-grade durability | 2007-2014 GM Full-Size Trucks & SUVs | 1 Piece | Alloy Steel | Amazon |
In‑Depth Reviews
1. 15854941 Engine Motor Mount Fits 2007-2014 Tahoe Silverado Suburban Sierra
Our pick — over 4.5★ from 950+ verified ratings; the strongest balance of quality and price.
The crowd favorite that kills the clunk on 2007-2014 GM trucks and SUVs.
This is the set that keeps showing up in the driveways of Tahoe, Yukon, and Silverado owners for one simple reason: it bolts in like the factory part and silences the dreaded clunk on acceleration. Owners mention “No more clunking when I accelerate” after swapping these in, and owners with 2011 Silverado 5.3 and 2009 Yukon XL Denali 6.2 engines confirm the fit is spot-on. The mounts are lined with Anti-Freeze rubber, which is what soaks up the engine vibration that makes the cab feel rough at idle. Quality is the single thing owners praise most, with over 70 buyers singling it out, and fit is the second-most-discussed positive.
At 4.55 kg each, this is a hefty, solid part that comes as a set of two, replacing part numbers 15837373, 15837375, 15854939, 15854940, 15854941, and 15878845. The heat shield is built in, which matters because the mount sits close to the exhaust manifold on these trucks. The catch is the install: the heat shields are more restrictive than the factory ones, and many owners say the passenger-side bolts are a fight, often needing extensions and universal joints. The makers back it with a 1-year guarantee, so a defective part is covered.
Compared to the GM Genuine single mount further down, this set of two costs a fraction of what two factory pieces would, and it carries the same heat-shield protection. Durability gets a mixed verdict from owners — some units have held up well, while a few failed within six months — so this is a value-first pick rather than a lifetime part. If you are doing an engine-out job, this is a no-brainer addition.
What wins owners over
- Perfect factory-style fit on 2007-2014 GM full-size trucks and SUVs
- Built-in heat shields protect the rubber from exhaust heat
- Set of two with a 1-year guarantee included
What to expect during install
- Heat shields are tighter than factory, making some bolts hard to reach
- Passenger side may need the mounting plate removed
- A few customers note units failing within six months
Reach for this if: you own a 2007-2014 GM truck or SUV and want a proven, budget-friendly pair that bolts in and ends the clunk.
Look elsewhere if: you want the certainty of a factory warranty and don’t mind paying several times more for one mount.
2. LS Swap Motor Mounts Compatible with 1973-1998 Square Body / OBS Chevy GMC Truck
The adjustable bracket that drops an LS engine into a 1973-1998 square body.
If you are swapping a modern LS engine into a classic square body or OBS Chevy, this bracket makes the fit work. It is built from high-carbon cold rolled steel (a strong, stamped steel that resists bending) and fits all Chevrolet LS series engines — LS1, LS2, LS3, LS6, LS7, LS9, plus GM 4.8L 5.3L 5.7L 6.0L 6.2L from 1997-2014 — as well as the 1999-2013 Vortec truck engines. It handles 1973-1998 C/K trucks in both 2WD and 4WD, covering C10, C20, C30, C1500, C2500, C3500, and the Jimmy, Sierra, Scottsdale, and Silverado trims. Buyers confirm: “It’s holding my 6.0 in my 97 Chevy k1500” without issue.
The defining feature is the slotted adjustment holes, which let you move the engine forward or backward in the bay to fine-tune clearance. That adjustability is what owners praise most about fit, and it pairs with the mount’s willingness to work with a long list of transmissions — 4L60E, 4L65E, TH350, TH400, TH700R4, 4L80, and more. At 3.16 kg for the pair with a black metallic finish, it is noticeably lighter than the 4.55 kg set above, which speaks to its job as a swap bracket rather than a vibration-dampening OE cushion.
The honest trade-off is quality control. One owner found flanges that were not parallel on the first unit, though the replacement was correct, and the coating and heavy material were praised. Because this is a swap accessory, you will need to pair it with the right isolators and hardware for your specific engine and frame. The maker will send a new product if you get a defective unit, so the risk is manageable.
Your call here: this is the go-to for DIY LS swappers who want adjustable placement and steel strength, but it is not a vibration-damping OE replacement — that is a different job entirely.
3. 2PCS Left and Right Engine Mounts Fits Silverado Tahoe Sierra 1500, V8
The budget pair that matches factory feel on 99-06 GM V8s.
Silverado, Tahoe, and Sierra owners with the 4.8L, 5.3L, or 6.0L V8 from 1999-2006 can grab this set of two A2909 mounts and get factory-matching performance at a price that undercuts the dealership. The mounts are built from durable steel with heavy-duty rubber chosen for anti-wear and anti-aging properties, and they aim to meet or exceed OEM specifications. One owner swapped these in while replacing an engine in a Chevy 3500 and confirmed they “Worked perfect,” while another called the quality great after a month of use. Quality is the aspect owners praise most, with 16 buyers noting it.
What sets this pick apart is its honest installation advice. The listing recommends professional installation if you lack experience, and it gives a specific tip: line up all bolts and rotate them into the holes before tightening anything, because fastening one bolt fully first can misalign the rest. That advice exists because reviewers point out the center frame-side hole does not always line up, with some needing a little drilling or dremel work to persuade it. At 4.28 kg for the pair, it is solid and powder coated to resist corrosion, and it sits comfortably in the middle of the size range of the mounts here.
Compared to the 15854941 set above, this one targets the earlier 1999-2006 body style, so the two are not interchangeable. The recurring fit note is the frame-side hole alignment, and while a few owners fixed it with a vise or a file, you should expect a little patience during install. For the price, buyers consistently call it great value.
Why it earns its keep
- Factory-matching quality on 99-06 Silverado, Tahoe, and Sierra V8s
- Powder coated steel resists rust and wear
- One of the cheapest ways to fix drivetrain slop
Where it needs patience
- Center frame-side hole can be misaligned, needing drilling
- Engine-side holes may run wide and require clamping to align
- Professional install recommended if you lack experience
Best for the budget builder: this pair delivers factory feel on 99-06 GM V8s without the dealer price tag.
Not for a rushed weekend: the alignment quirks mean you should budget extra time or a shop visit.
4. Engine Motor Transmission Mount Replace Kit for Trucks & SUVs
The all-in-three kit that replaces every mount in one go.
Instead of buying two motor mounts and a transmission mount separately, this set of three covers the whole drivetrain at once for 2007-2014 GM Rear-Wheel Drive (RWD) trucks and SUVs. It fits the Cadillac Escalade and ESV with the 6.2L V8, the Silverado 1500, Classic, 2500 HD, and 3500 HD with 5.3L, 6.0L, or 6.2L V8s, and the matching GMC Sierra models. The kit includes one front-left mount, one front-right mount, and one transmission mount, which means balanced support from the engine to the transmission rather than patching one worn piece at a time. Shoppers say the fit is perfect and that their vehicles run better after installation, with one noting the engine shake was eliminated entirely.
The keyword here is “RWD models only” — the listing is explicit that you must verify your drivetrain before ordering, since 4WD and AWD versions use different mounts. The kit replaces OE numbers including A5365, A2811, 3211, 2811, EM-5583, EM-2811, 15837373, and 15854941, and it is powder coated in a compact 5 x 4 x 3 inch package. Fit is the thing owners praise most, with 46 buyers calling it out, and value for money is second at 37 mentions — a strong sign this kit earns its keep.
The trade-offs are worth knowing. Installation is mixed: some owners call it easy and sturdy, while others found it difficult or reported units breaking on the first day. Vibration damping is also a mixed bag — many say the shake is gone, but a few still feel some. Because it is a 3-piece set, you replace everything at once, which is the smartest way to avoid chasing a clunk that moves between mounts. Weigh the fit praise against the durability reports before you commit.
One-stop solution: if you want to replace all three mounts in one order for a 2007-2014 RWD GM truck, this kit is the efficient route.
Check yours twice: confirm RWD and your exact engine, since fitment is strict and durability feedback is split.
5. GM Genuine Parts 15854939 Engine Mount
The genuine factory mount with a warranty, for owners who want zero guesswork.
When you want the exact part the factory installed, this GM Genuine mount is it. It is made in the United States and backed by a 24-month, unlimited-mileage limited warranty — the only pick in this lineup with that kind of factory protection. At 6.1 pounds for a single mount, it is slightly heavier than the aftermarket pair pieces, which reflects the denser rubber and steel construction. Owners who swapped this into 2007 Yukon XL Denali and Denali XL 6.2L trucks report a perfect fit and note that the original mount lasted roughly 125,000 miles before heat from the exhaust headers killed it.
The built-in heat shields are the reason to choose this over a bare aftermarket mount. Because these mounts sit close to the exhaust manifolds, the shields protect the rubber from cooking, and owners call them essential. The install, however, is a real job: several owners describe a 6-hour effort involving removing the steering linkage and heat shield, jacking the engine, and on some applications pulling the exhaust manifold for clearance. This is not a quick driveway swap, and the listing’s fit type is “Vehicle Specific,” so confirm your application before ordering.
Here is the honest price comparison: this one mount costs more than double the 15854941 set of two, but you are paying for the GM name, the warranty, and the certainty of a factory part. If your time is limited and you want the longest expected life, this is the safer bet. An occasional unit arrives with the protective sheet slightly bent in shipping, but that is cosmetic and does not affect function.
The factory advantage
- Genuine GM part built in the United States
- 24-month unlimited-mileage warranty for confidence
- Essential heat shields protect against exhaust damage
Plant for the cost
- Single mount costs more than twice the aftermarket pair
- Install is a 6-hour job needing engine jacking
- May require exhaust manifold removal for clearance
Choose this if: you want the factory part with a real warranty and can commit the time to a careful install.
skip it if: you are on a budget or doing a quick swap where an aftermarket pair gets the job done for less.
Understanding the Specs
Fitment and Part Numbers
Motor mounts are not universal — the part number must match your engine, year, and drivetrain. The 15854941 set covers 2007-2014 GM trucks and SUVs, while the 2PCS set targets the earlier 1999-2006 V8s. An LS swap bracket is a different beast entirely, built to mount a newer engine into an older frame. Check the cross-reference numbers in each listing against your VIN before buying.
Heat Shields and Materials
Mounts near the exhaust manifold need a heat shield to keep the rubber from cooking — this is why the GM Genuine part and the 15854941 set both have them built in. The rubber itself is what absorbs engine vibration, while the steel body carries the engine’s weight. Powder coated finishes resist rust, and alloy steel construction adds strength. A heavier mount at 4.55 kg generally means more dense rubber and steel.
FAQ
How do I know if my motor mounts are bad?
Will a 2007-2014 mount fit my older Silverado?
What is the difference between a set of 2 and a set of 3 mounts?
Are the 15854941 and the GM Genuine 15854939 the same part?
Can I install motor mounts myself?
What does RWD-only mean for the 3-piece kit?
How long do motor mounts typically last?
What is an LS swap motor mount for?
Do I need to replace both mounts at the same time?
Which mount is best for a 2007-2014 RWD Silverado?
Final Thoughts: The Verdict
For most owners, the truck motor mounts winner is the 15854941 Engine Motor Mount set because it delivers factory-style fit, built-in heat shields, and a proven reputation for killing the clunk on 2007-2014 GM trucks and SUVs at a budget-friendly price. If you are doing an LS swap into a classic square body, grab the Goopool LS Swap Motor Mounts for their adjustable steel brackets. And if you want the certainty of a factory warranty and a part built in the United States, the GM Genuine 15854939 is the premium pick to reach for.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of August 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, GoCarLife earns from qualifying purchases. This does not affect which products we feature.