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Get your free estimateGenie Cable & Drum Replacement: The San Antonio Owner’s Guide
We stock and install Genie-compatible cable and drum replacements throughout San Antonio, with most jobs priced between $130 and $250 and completed the same day the technician arrives. The cables on a Genie door are the braided steel lines that run up both sides, and the drums are the grooved spools at each end of the torsion tube that wind those cables as the door moves. When either part fails, the symptom is nearly always the same: the door goes up crooked, stops halfway, or makes a sharp snapping sound followed by one side dropping.
Most San Antonio homeowners discover the problem on a weekday morning, with the car still inside and a schedule already running late. We understand that. The good news is that Genie cable and drum failures are straightforward to diagnose, the replacement parts are predictable to source, and the fix can usually be handled in a single visit.
Which Genie Models This Applies To
Genie has manufactured residential garage doors under several product lines over the past three decades: the Intellicode series, the QuietLift series, the TriloG series, and the newer MachForce line. The cable and drum setup on every one of these shares the same basic architecture: a torsion tube mounted above the door, two cable drums at each end, and a pair of lift cables that transfer spring torque into door movement. The difference is in the specifications.
Here is the compatibility gotcha most owners miss: Genie doors use drums matched to the door’s weight and spring size, not just its brand. A drum for a single-car Genie door with a seven-foot height is not interchangeable with one from a double-wide, eight-foot door, even if both say “Genie” on the label. On older models the drum size is often stamped on the face of the drum itself. On newer doors the model number on the inside panel, near the bottom of the door or on the edge, is the fastest way to identify the right pair. We carry OEM Genie drums for current models and quality aftermarket equivalents for discontinued lines. For older Genie doors where OEM parts are no longer made, the aftermarket equivalent is often the only option, and in our experience it performs just as well when matched correctly.
Styles & brands we work with






Signs Your Genie Cable & Drum Replacement Is Failing
- The door hangs crooked when opening or closing. This is the classic signal that one cable has stretched, frayed, or slipped off its drum while the other side still holds tension. In San Antonio garages we see this most often after a year of hard daily use, because heat and humidity in enclosed garages accelerate cable wear.
- You hear a metallic snap, then one side of the door drops suddenly. That sound is a cable parting under load. The door weighs 150 to 300 pounds depending on the model, and when one cable lets go, the full weight lands on the remaining cable and the rollers on that side.
- The cable is visibly unraveling near the bottom bracket. Genie cables attach to small brackets at the bottom corners of the door. When a cable loses its twist, individual strands fan out. If you see this, the cable is past the point of safe continued use.
- The door rises, then jerks or shudders partway up. Jerky movement often means the cable has partially jumped the drum groove and is stacking unevenly. It will not correct itself, and every cycle makes the misalignment worse.
- You find broken wire strands on the floor near the door tracks. This is a late-stage warning. By the time strands are falling loose, the remaining cable is holding far more than its safe working load.
Replacement Cost & What’s Included
The cost to replace Genie cables and drums in San Antonio runs from $130 to $250 for standard single or double-car doors when the springs are intact. That number covers the parts, the labor, the rebalancing of the door, and the tensioning of both cables so the door lifts evenly from either side. If the cable failure was caused by a broken torsion spring, the job becomes a spring and cable replacement, which ranges from $180 to $340 in the San Antonio market.
Every Fernbrook job includes a written price before any work starts. We quote the parts and the labor together so there is no separate surprise line item, and if the technician finds something unexpected while replacing the drum or cable, the new price is discussed and approved before anything changes. The work itself falls under our 365-Day Done Right Promise: if the replacement cable or drum is not right, we make it right at no additional charge.
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AfterDIY or Call Us?
We want to be direct about this part: replacing a Genie cable or drum yourself is not a beginner-level job, and it is genuinely dangerous if the torsion spring is still wound. The springs on a residential door hold enough force under tension to break bones or worse, and the cable is what transfers that force to the door. If you are asking whether you can do this yourself, the honest answer in most cases is no, and the risk is not worth the money you save on a $130 to $250 repair.
What you can safely do before calling us is check the cable for visible fraying, confirm whether the door is hanging unevenly, and note the model number from the sticker inside the door panel. That saves time on the phone. If the garage door will not stay open or is making noise when it moves, leave it in place and call us at (806) 602-8374. One of our technicians will walk you through what they think happened and what the replacement involves before anyone is scheduled.
Frequently Asked Questions
In San Antonio’s hot, humid climate, Genie cables typically last 8 to 12 years with normal use, and drums often last the life of the door unless a cable mishap damages a groove. The summer heat inside a closed garage accelerates oxidation on the cable’s steel strands, so doors that face direct afternoon sun or sit in poorly ventilated garages tend to show cable wear sooner. Regular visual checks every six months will catch fraying before it becomes a failure. Call (806) 602-8374 if you spot loose strands; it is a far cheaper visit than a dropped door.
No. Once the cable’s individual strands have separated or snapped, the structural integrity is gone, and patching or splicing a garage door cable is not safe practice. The correct repair is full replacement of both cables at the same time, even if only one shows damage, because the other cable has absorbed the same number of cycles and is usually close behind. Call (806) 602-8374 for a free estimate, and we will measure and quote the pair before any work begins.
Expect the replacement to take 45 to 90 minutes on site, depending on whether the springs need re-tensioning and whether both drums need to be swapped. We carry Genie-compatible cables, drums, and spring fittings on our trucks, so the work is usually done in a single visit without ordering parts. Call (806) 602-8374 to schedule, and the technician will give you a time window that respects your schedule.
Yes. Fernbrook Garage Doors San Antonio keeps Genie-compatible cables, drums, and related hardware stocked on our service vehicles for standard seven and eight foot door heights, along with parts for LiftMaster and Chamberlain systems. For uncommon Genie models or unusual door sizes, we may need to order a drum specifically matched to your door, which typically takes one to two business days in San Antonio. Call (806) 602-8374 with your model number and we will confirm availability.
Contact Fernbrook Garage Doors San Antonio
If your Genie door is hanging unevenly, making a snapping sound, or showing frayed cables, call Fernbrook Garage Doors San Antonio at (806) 602-8374. A live person answers 24 hours a day, seven days a week, and there is no voicemail tree to navigate. We will give you a written quote before any work starts, our technicians arrive background-checked and in uniform, and they follow the C.A.R.E. values on every visit: Clean up like it is our own home, Ask before we move or touch anything, Respect the family’s time and quiet hours, and Explain the price before the work. If you live near Alamo Heights, Stone Oak, or anywhere else in San Antonio, we know the homes, the garage layouts, and the way a Texas summer ages a steel cable. A door that works quietly is one less thing your family has to think about.
Written by Jesse Calder, Owner, Fernbrook Garage Doors San Antonio at Fernbrook Garage Doors San Antonio, serving San Antonio and nearby areas.