Quick Answer: Why Your LG Dryer Vibrates and Shakes#
Most likely: the dryer is not level, or you are drying a single heavy item that throws the drum off balance. On these LG front-loaders (the DLEX line), those two easy causes account for most shaking; after them come worn rear drum rollers with flat-spotted bearings, a stretched drive belt letting the drum run off-center, and loose internal hardware adding resonance. If the dryer is stacked on a washer, an unlevel washer underneath amplifies everything. Start by leveling all four legs and balancing the load.
Likely Causes at a Glance#
| Cause | Likelihood | What to check |
|---|---|---|
| Dryer not level | Most likely | it rocks; set a level on top and adjust the legs |
| Unbalanced load | Common | a single comforter or rug tumbling alone |
| Worn drum rollers | Common | rhythmic thumping that worsens with heavier loads |
| Stretched drive belt | Occasional | off-center drum rotation and vibration |
| Loose internal hardware | Occasional | a motor mount or bulkhead bolt backed out |
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Walking Through the Diagnosis#
Begin with the two things that cost nothing. Set a spirit level on top of the dryer and adjust the legs until it does not rock in any direction — LG DLEX dryers have four adjustable legs, two front and two rear, and ALL four must sit firmly on the floor, because one leg that is not touching throws the weight onto the other three and makes the cabinet unstable. Then rock it diagonally to be sure it is solid. Next, look at the LOAD: LG dryers have no balance-detection system, so a single heavy comforter, pillow, or rug tumbling alone will slam the drum around — add a few towels to balance it and never dry one bulky item by itself.
If it is level and the load is balanced, the shaking is mechanical. Worn rear drum rollers are the most common hard fault when vibration has crept up over months: their bearings develop flat spots, so each rotation delivers a little bump that grows into a steady thump, and it worsens with heavier loads. Replace them as a set — the LG roller kit 4581EL2002C includes both rollers and their shafts. A stretched or partly failed drive belt (LG 4400EL2001A) lets the drum ride off-center and vibrate, so inspect it for stretching or fraying. Finally, vibration itself loosens hardware over time — the motor mount, blower housing, and front bulkhead bolts can back out and add resonance, so snug any accessible mounting screws.
One more for stacked installs: if your LG dryer sits on a washer with a stacking kit, confirm the kit hardware is fully tightened AND that the washer beneath is dead level, because a rocking washer transmits and multiplies the dryer's motion. Anti-vibration pads under the washer help further.
Repair or Replace? The Short Version#
Rule of thumb: if the repair comes in under about half the price of a comparable new dryer and yours is under eight to ten years old, repair it — leveling and balancing the load cost nothing, and a roller kit or drive belt is an inexpensive, targeted part. Replace worn rollers at the first thumping, since the extra vibration wears out other components if you wait. Our technicians carry LG roller kits and belts — book a repair.
Safety First — Know the Risks
Gas dryers carry carbon monoxide and explosion risk. Even electric dryers involve 240V circuits that can deliver a fatal shock. Our techs are licensed and insured — let them handle the risk.
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Frequently Asked Questions#
My LG dryer rocks and shakes — what is the first thing to check?#
Level. Set a spirit level on top and adjust all four legs until it does not rock diagonally; every leg must sit firmly on the floor. An unlevel dryer is the single most common cause of shaking, and it costs nothing to fix.
It only shakes badly with certain loads — is something broken?#
Probably not. LG dryers have no balance-detection, so a single heavy comforter, rug, or pillow tumbling alone throws the drum off balance. Add a few towels to balance the load and avoid drying one bulky item by itself.
The vibration has slowly gotten worse over months — why?#
That pattern points to worn rear drum rollers. Their bearings flat-spot and each turn adds a small bump that grows into a steady thump, worse with heavy loads. Replace the rollers as a set before the vibration wears other parts.
My stacked LG dryer vibrates a lot — could the washer be the cause?#
Yes. If the washer underneath is not level or the stacking kit is loose, it transmits and amplifies the dryer's motion. Level the washer, tighten the stacking hardware, and add anti-vibration pads beneath it.
Senior Appliance Repair Technician · 15 years experience
EPA-certified technician with 15 years of experience specializing in refrigerator and cooling system repairs.


