Garage Door Cable Slipped Off the Drum
If your garage door cable slipped off the drum, stop using the door right away and leave it where it is. A cable that's jumped off its drum means the door is no longer evenly supported, so opening or closing it can make the door drop, jam crooked in the tracks, or send a spring-loaded cable whipping under tension. This is a repair best left to a pro, because the cables work hand-in-hand with the springs that are wound tight enough to seriously hurt you.
Step by step
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1
Stop using the door and clear the area
Don't keep hitting the opener button to "work it loose" — that's the fastest way to turn a $200 fix into a bent door or a snapped cable. Get kids, pets, and cars out from under and around the door, and leave it in whatever position it's in (usually it'll be hanging crooked or sagging on one side).
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2
Figure out which side slipped and whether the door is open or closed
Look at the bottom corners of the door where the cables attach. A slipped cable usually shows up as slack, loose loops, or a cable wadded up around the drum at the top of the track on one side, while the other side looks normal. Note which side it is and whether the door is up, down, or stuck partway — that's the first thing a tech will ask.
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3
Don't unplug or disconnect anything until the door is secured
It's tempting to pull the red emergency release cord, but on a door with a derailed cable the release can let the door fall fast and unevenly. If the door is open and you're worried it'll drop, clamp a pair of locking pliers (Vise-Grips) onto the track just below a roller on each side so it physically can't slide down. Then leave it alone.
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4
Take a couple of photos and identify your spring type
Snap a photo of the slipped cable, the drum at the top, and the spring system above the door. If there's a long spring (or two) mounted on a bar across the top of the door, that's a torsion system. If there are springs running along the horizontal tracks on each side, those are extension springs. Knowing which one you have helps the tech bring the right parts on the first trip.
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5
Call a garage door pro to re-seat the cable safely
Re-spooling a cable means relieving and re-tensioning the spring, getting the cable seated in the drum grooves correctly, and balancing both sides so the door tracks evenly. A trained tech does this with winding bars and the right clamps in well under an hour. This is the step where DIY goes wrong most often, so it's worth the call.
When to call a pro
Call a pro for any cable that's off the drum — torsion and extension springs hold enough stored tension to cause serious injury, and a derailed cable almost always needs the spring relieved and the door re-balanced, which isn't a safe DIY job.
Call (888) 290-7421Frequently asked
Can I put the garage door cable back on the drum myself?
We don't recommend it. Re-seating a cable requires loosening and re-winding the spring, and the springs on most doors are wound under enough tension to break a hand or worse if a winding bar slips. If you're experienced with torsion springs and have the proper winding bars you may attempt it, but for almost every homeowner this is a call-a-pro situation.
Why did my garage door cable come off the drum in the first place?
The usual culprits are a door that got out of balance, hitting an object that briefly went slack on one cable, worn or frayed cables, a loose drum set screw, or the door coming down on something that created slack the cable then jumped out of. A door that's been a little crooked or noisy for a while is more prone to it, which is why a balance check during the repair is worth it.
Is it safe to use my garage door with the cable off the drum?
No. With a cable off the drum the door isn't evenly supported, so it can drop suddenly, twist in the tracks, or come off the rollers entirely. Running the opener can also burn out the motor as it strains against the jam. Leave the door alone until it's fixed.
How much does it cost to fix a garage door cable that slipped off the drum?
For a straightforward re-seat where the cable isn't damaged, most homeowners pay somewhere in the $125 to $200 range. If the cable is frayed or snapped it'll be replaced (often in pairs), and if the slip damaged the spring or a drum the price climbs. Your tech can quote it once they see whether parts need replacing — get an exact number from a local pro before the work starts.
Rather leave it to a pro?
Licensed local techs, same-day service, upfront pricing, and a 1-year warranty.