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.
Before
After
Before
After
Before
AfterGarage door opens slowly or unevenly
What’s Happening
A garage door that opens slowly or unevenly almost always points to one of three things: worn or unbalanced springs, a cable that has slipped or frayed, or a drive system that’s lost the power or lubrication it needs to move the door at the right speed. These aren’t cosmetic problems. Left alone, any one of them puts the door at risk of stopping mid-cycle, coming down unexpectedly, or damaging the opener motor beyond repair.
The door isn’t supposed to fight you. A properly balanced, well-maintained door should glide up and come down at a steady pace, with the opener doing most of the lifting. When it slows, lurches, or rises higher on one side than the other, something mechanical has shifted – and the door is telling you exactly that. The good news is that a trained technician can usually spot the cause within the first few minutes on site.
Why It Happens
Spring wear or imbalance
Torsion and extension springs do the actual lifting. The opener just guides the motion. When one spring weakens or breaks – even partially – the door gets heavy on that side, and the opener strains to compensate, which is why you hear the motor working harder than usual. If the door looks visibly tilted when it’s halfway up, or if it creaks and jerks on one side, spring imbalance is the likely cause. Do not attempt to inspect, adjust, or replace springs yourself. These components store an enormous amount of mechanical energy under tension, and a spring that releases without control can cause serious injury. Stop using the door and call a technician.
Cable off the drum or fraying
Each side of the door runs a steel cable that keeps the panels tracking straight as the door travels up and down. When a cable slips off its drum or develops a fray, one side of the door rises faster than the other – giving you that slow, lopsided motion that looks wrong the moment you watch it. You may be able to see a cable hanging loosely from the drum at the bottom corners of the door, or notice the door sitting slightly crooked when it’s fully closed. Cables work under the same tension as springs. Identifying the problem visually is fine; touching them is not. This is a call-first situation.
Opener motor or drive system issues
LiftMaster, Chamberlain, Genie, Craftsman and other openers all use either a belt, chain, or screw drive to move the trolley. Over time, the drive can stretch, dry out, or develop worn gear teeth that cause the motor to push unevenly through the travel cycle. The sign here is usually a grinding or stuttering sound from the opener unit itself, rather than from the door panels. If the door moves fine when you disconnect the opener and lift it by hand, but lags or surges when the opener is engaged, the drive system is the place to look.
Lack of lubrication or debris in the tracks
This is the simplest cause and the one most often overlooked. Rollers dry out, hinges stiffen, and the tracks can collect grit that creates drag at certain points in the door’s travel. The symptom here is usually a consistent slow spot – the same hesitation in the same position every time the door opens. You might also hear a scraping or squeaking sound at that exact point. Unlike spring or cable problems, this one is sometimes owner-serviceable, but only after a technician has confirmed the tracks are clear, straight, and properly aligned.
What to Do Right Now
- Stop using the door. A door that’s moving unevenly is putting extra stress on the opener, the cables, and the remaining good spring. Every cycle risks making a minor repair into a larger one – or causing the door to drop.
- Disconnect the opener if the door is stuck mid-travel. Most openers have a red emergency release cord hanging from the trolley. Pull it to disengage the drive and lower the door by hand carefully. If the door feels heavy or won’t stay put on its own, leave it where it is and call immediately – it likely means the spring is compromised.
- Take a short video before you call. A 20-second clip of the door in motion, showing the uneven travel, gives the technician a head start and helps confirm which components are behaving abnormally.
- Look – don’t touch – the spring and cable area. Check whether any cables are visibly loose at the bottom corners, and whether the torsion spring above the door has a visible gap in the coil. These are useful things to report. They are not things to touch or adjust.
- Note which side is slow and when the problem started. Did it come on gradually over a few weeks, or was it sudden after a cold night? That history helps the technician narrow the diagnosis before the truck even arrives.
How We Fix It
When your local Brock Garage Door Repair technician arrives, the first thing that happens is a full inspection of the springs, cables, drums, rollers, tracks, and opener drive – not just the part that looks broken. A slow or uneven door usually has one clear cause, but the surrounding components bear the extra load and often show wear as well.
Once the technician identifies the issue, you get a written price before any work starts. That’s the number on the invoice. It doesn’t move. If springs are the cause, the repair falls under our Garage Door Repair service. If a cable has slipped or frayed, that’s handled through our Garage Door Cable Repair. Opener drive problems are addressed under Garage Door Opener Repair. Most of these repairs complete in under two hours.
Every repair is covered by the 365-Day Done Right Promise, written on your paperwork before we start: if the repair fails within a year, we come back and correct it at no charge. Wade Mercer and the Brock team have operated under The Garrison Standard since 2001. The standard doesn’t bend.
Frequently Asked Questions
Yes, it can be. A door that moves unevenly is often working against a weakened spring or a cable that’s partially off its drum. Each use puts additional strain on the opener motor and the remaining healthy components. In a worst case, the door can drop without warning. We’d recommend stopping use until a technician has had a look – call (254) 602-5116 and a live person will pick up right now.
It depends on what’s causing it, but the underlying problems that produce slow or uneven movement don’t get better on their own – they get worse with each cycle. A fraying cable or a spring that’s partially wound down is on a timeline you don’t control. If the door is still functioning and you can park elsewhere, a day or two isn’t catastrophic. But don’t let it go a week. Call (254) 602-5116 to get on the schedule.
Your local Brock Garage Door Repair team handles urgent repair calls, and a live person answers at (254) 602-5116 around the clock – including nights and weekends. Call now and we’ll tell you exactly when we can be there.
No. The written price is handed over before any work starts – that’s not a policy we make exceptions to. What the technician quotes after inspection is what appears on the invoice. No adjustments at the end, no line items added once the job is underway. That’s how every Brock job works, every time.
Get It Fixed
A door that’s moving slowly or unevenly needs a trained eye, not more waiting. Call (254) 602-5116 – a live person answers 24 hours a day, seven days a week. Your local Brock Garage Door Repair team will arrive on time, put the price in writing before touching anything, and stand behind the work for a full year.
Written by Wade Mercer, Owner & Technician at Brock Garage Door Repair, operating under the Garrison Partners network since 2001.
What Our Customers Say
"Disciplined and polite. He did a full checklist on the door before leaving, even things I hadn't called about."
- Melody B."My husband served and he loved talking with the tech. The man did a careful, honest job on our springs."
- Doris P."Door stuck open with a snapped cable. Tech was squared away, explained what happened, and fixed it in under an hour. Price was what he said it would be."
- Cynthia M.