Genie Cable & Drum Replacement Nationwide

Genie Cable & Drum Replacement: The Longmont Owner’s Guide

Genie cable and drum replacement in Longmont typically runs $130 to $250 installed when we do the work, and we stock Genie-compatible cables and drums on our trucks, so most jobs are done same day. You’ll usually discover the failure when the door jerks to one side on the way up, one cable hangs slack, or you hear a loud snap followed by the door refusing to move. We see it most often on doors that are seven to ten years old, where the cable has been quietly fraying against a worn drum edge for months before it finally let go.

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The cable itself is the steel lifeline that runs up each side of your door and spools onto a drum mounted above the opening. The drum is the grooved steel spool that guides the cable evenly as the door opens and closes. When either part fails, the door can bind, drop unevenly, or refuse to move. On a Genie system, the drum profile matters more than most people expect, and that’s where the replacement conversation usually starts.

Which Genie Models This Applies To

Genie has used two drum designs across its residential line: the older deep-groove drums found on chain-drive systems from the early 2000s, and the narrower-profile drums on the newer IntelliG and StealthDrive series. The cable diameter is mostly standardized at 1/8-inch or 5/32-inch for residential doors, but the drum groove depth and cable length change with door height. A 7-foot door takes a different cable than an 8-foot door, and mixing them is the most common compatibility mistake we see in Longmont garages.

When you open the garage and look at the drum above the door, there’s a model stamp or embossed number on the flat face. That number tells us which drum profile your door was built with. If the stamp is gone, we measure the groove depth with a caliper. We default to genuine Genie replacement parts when the door is under warranty or the drum shape is a non-standard profile. For out-of-warranty doors, a quality aftermarket drum made to the same groove depth works well and costs less. We’re an independent service provider, not affiliated with Genie historically; we just carry the parts and know which drum matches which series, because getting that wrong means a door that opens crooked.

The one gotcha worth knowing: Genie’s newer StealthDrive 750 and 770 models use a drum with a slightly wider groove seat than the older Pro-Max line. They look almost identical side by side. If a shop sells you a Pro-Max drum to fit a StealthDrive, the cable seats slightly off-center and frays within a year. We see that exact mistake on competitor replacements in Longmont more often than we’d like.

Signs Your Genie Cable & Drum Replacement Is Failing

• Door rises crooked or pauses mid-lift. When one cable stretches or frays, that side of the door lags behind the other. It’s not subtle; you’ll see the bottom panel at an angle. The cause is almost always an uneven drum or a cable losing tension.
• Visibly frayed or rusted cable strands. A cable is made of twisted steel strands. When individual strands start peeling away from the cable body, the part is done. Longmont’s winter freeze-thaw cycles accelerate this by trapping moisture against the steel.
• Loud snap followed by door slamming to one side. When the cable parts, the full weight of the door transfers to the remaining cable and the spring. That’s a dangerous moment: the door can drop fast. If you hear the snap, don’t stand under the door.
• Cable has jumped out of the drum groove. You’ll see the cable wrapped loosely around the shaft or dangling behind the track. This usually means the drum is worn or the cable got too much slack, and it won’t stay seated again until one or both are replaced.
• Scraping or clicking from above the door when it moves. A drum with a worn groove lets the cable drag across the drum face instead of settling in cleanly. It’s a small noise that most people ignore until the cable pops.

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Replacement Cost & What’s Included

In Longmont, we quote cable replacement at $130 to $250 installed, and a full cable-and-drum replacement lands in that same range depending on the drum type and your door’s height. Line items: cable runs $30 to $85 per side for Genie-compatible parts, drums run $40 to $110 each, and labor makes up the rest. If your door took a hard hit when the cable snapped, rollers or a track check add to the total, and we flag that before we start.

Every quote is written, flat, and in your hand before we touch a wrench. That’s Clause 1 of The Haven Standard, and it means the price you agree to is the price you pay. Marcus Deller is the owner here, and we’ve built the whole company around that rule since 2015. The work carries our 365-Day Done Right Promise: if it’s not right, we make it right, backed by the standard. And you get a photo record of the failed parts and the finished job before we leave, because you should see what you paid for. Clause 4.

DIY or Call Us?

Drum and cable replacement sits right at the line between owner-doable and genuinely dangerous. You can safely inspect: unplug the opener, pull the emergency release, and with the door fully down, look at the cable and drum. Visible fraying, a loose cable, or a drum that’s out of round is enough information for a written quote. What you shouldn’t do is attempt the replacement yourself. The cable runs under spring tension, and a drum under load can spin violently if released wrong. People lose fingers and worse. This is not a scare line; it’s what the service record shows.

We’d rather you call us. We’ll name the part, quote the range, then do the work. The quote is free and the explanation is plain. Call (970) 528-5851 and you’ll talk to a person, not a menu.

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