Full 25-point door and opener safety check with every visit - springs, cables, rollers, tracks, and your LiftMaster or Chamberlain opener included
You get a price before we start. It does not change when the truck arrives.
Genie Cable & Drum Replacement: The Simi Valley Owner’s Guide
Replacing Genie cables and drums in Simi Valley typically runs $130-$250 installed, and we carry both OEM and quality aftermarket parts on the truck for same-day replacement in most cases. Owners usually discover this failure one of two ways: the door hangs crooked or jams partway up, or a frayed cable is visibly unraveling near the bottom bracket. Either way, the fix is mechanical, predictable, and priced in writing before we touch anything.

What most people don’t see until we point it out: the cable and the drum work as a matched pair. The cable winds onto the drum in a specific groove, and when the cable frays, it chews up the drum’s groove on the way out. That’s why we quote both together on a Genie when there’s visible cable damage. It’s not an upsell, it’s how the part actually wears.
Which Genie Models This Applies To
This covers the cable and drum assemblies on Genie residential sectional doors, which includes the ReliaG, IntelliG, and TriloG model lines, plus the older Blue Max and Pro Max openers that are still running in hundreds of Simi Valley garages. The door itself matters more than the opener for this repair: the cable and drum are onboard the door, not the motor head.
The compatibility gotcha with Genie drums specifically is the drum profile. Genie uses a tapered drum on most 7-foot and 8-foot doors, and the taper angle changed between production years around 2008. A drum that looks identical from the ground will bind the cable mid-travel if it’s the wrong profile. We match drums by measuring the old one off the shaft, not by guessing from the model sticker.
On the cable side, we stock 7-foot, 8-foot, and 7-foot-6-inch lengths in standard 1/8-inch aircraft-grade steel, which covers nearly every residential Genie door in this area. OEM Genie cables are good. The aftermarket equivalents we carry come from the same Midwest suppliers used by most door companies in Ventura County, and we’ve installed enough of them to know which hold up in the dry heat. For drums, we use OEM or exact-spec aftermarket. The groove geometry is the part that matters.
We’re an independent service provider, not affiliated with Genie. We stock Genie-compatible parts because roughly one in four doors we service in Simi Valley carries the Genie name, and we also keep LiftMaster and Chamberlain parts on hand for the same reason.
Signs Your Genie Cable & Drum Replacement Is Failing

- The door hangs uneven or stops mid-travel. One cable has stretched or slipped out of its drum groove, so one side lifts while the other drags. The door’s weight shifts onto the remaining cable, which accelerates its failure.
- A cable looks fuzzy or has broken strands near the bottom bracket. That’s the contact point where moisture and road dust collect in a Simi Valley garage. Once strands start separating, the cable can’t hold full tension and is days to weeks from snapping.
- You heard a snap and the door slammed or dropped to one side. A cable let go. The spring still holds most of the tension, which is exactly why the door stays half-up and dangerous. Don’t try to move it.
- The door operates noisily and shudders on the way up. A grooved or worn drum surface makes the cable climb unevenly, so the door shudders at the same point in travel every cycle.
- The cable is coiled loosely around the drum or has jumped the groove. This usually traces back to a door that came off track once or a spring that lost tension. The cable and drum take the fallout.
Before
AfterReplacement Cost & What’s Included
For Simi Valley homeowners, expect $130-$250 installed for Genie cable and drum replacement. The low end covers one cable on a standard 7-foot door with the drum still in good shape. The upper end covers both cables and both drums, typically on an 8-foot door or one where the drum grooves are worn enough to warrant replacement. Every price is quoted as a flat, written figure before work begins, per Clause 1 of The Haven Standard.
What drives the range: whether we’re replacing a single cable or both, whether the drums are reusable, and whether the spring needs to be detensioned to safely remove the old cable. That last part matters: if the spring has been on the door since the Obama administration, it’s usually replaced at the same time. We’ll tell you what we found and what it costs before we touch it.

Included in every cable and drum replacement: the part itself, removal of the old assembly, installation and tension rebalance, a function test through a full open-close cycle, and the documented photo record of what came off and what went on. The work is covered by our 365-Day Done Right Promise: if it’s not right, we make it right.
DIY or Call Us?

Let’s be straight about the danger here: the cable and drum are the reason the garage door doesn’t fall through your ceiling. If the spring is still under tension, removing the cable without detensioning the spring can release several hundred pounds of stored force through the winding cone. That’s a hospital trip or worse. We’ve seen the aftermath of a homeowner trying to save $180 with a pair of vice grips. We don’t recommend it. This is one repair where a trained professional with the right procedure and the right tools is the only sensible option.
What you can safely do: take photos of the cable and drum so you know what you’re looking at, test the door in manual mode once to confirm the symptom, and check the bottom bracket for obvious rust. Then call (661) 964-4530. We’ll give you a dollar range on the phone and a written price before any work starts. That’s the whole arrangement.
FAQs
A Genie cable in Simi Valley typically lasts 8-12 years under normal use, shorter if the garage gets heavy coastal air intrusion off the Santa Susana Pass or the door is cycled five-plus times a day. Drums usually outlast two cable replacements unless the grooves have been scored by a frayed cable, which is the most common reason we replace both. Call (661) 964-4530 if you’re seeing fraying before the ten-year mark; we’ll tell you over the phone whether it’s urgent.
No. A cable with visible fraying, broken strands, or a kink near the bottom bracket has lost its structural integrity and cannot be safely spliced or reattached. The repair is the replacement. Call (661) 964-4530 and we’ll quote the exact cable length and price for your door before we arrive.
For a standard residential Genie door, replacing both cables and both drums takes about an hour on site, including detensioning and rebalancing the spring. If the spring itself is being replaced during the same visit, allow closer to 90 minutes. We carry the common Genie sizes on the truck, so there’s no parts-run delay unless your door is an unusual height. Call (661) 964-4530 for a same-day time window.
Yes. Our trucks carry both OEM Genie and exact-spec aftermarket cables in 7-foot, 7-foot-6-inch, and 8-foot lengths, plus the standard tapered Genie drums for residential doors. Marcus Deller and the crew have handled enough Genie calls across Simi Valley, from tract homes near Wood Ranch to older ranch-styles off Tapo Canyon Road, to know which parts to load. Call (661) 964-4530 and we’ll confirm the part fits your door before we leave the shop.
Call Servo Garage Doors Simi Valley

Name the part. Quote the range. Then pick up the wrench. That’s how we’ve done it since 2015, and it’s why we put the price in writing before anything gets unbolted. If a Genie cable or drum has failed on your door, call (661) 964-4530 now. We’ll give you an honest dollar range on the phone, dispatch a background-checked technician in a stocked truck, and leave you with a written price, a fixed door, and a photo record of exactly what was done. That’s Clause 1 and Clause 4 working together.
Written by Marcus Deller, Owner, Servo Garage Doors Simi Valley at Servo Garage Doors Simi Valley, serving Simi Valley and nearby areas.






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