Pick the closest symptom below. Each guide uses safe checks only (no risky DIY repairs) and clearly tells you when to stop and call a pro.
Category Guides (Pillar Posts)
These are the main “pillar” guides for each category. Start with the one that matches your situation:
- Noises / Vibration: What Each Sound Usually Means
- Opener / Remote / Keypad Problems: What to Check First
- Power / Lights / Battery Backup: What to Check First
- Sensors / Safety / Reversing: What to Check First
- Weather / Seal / Insulation: Stop Drafts, Water, and Pests
- Won’t Open / Won’t Close: What to Check First
Won’t Open / Won’t Close
See all Won’t Open / Won’t Close posts · Read the full guide
- Garage door won’t open at all
- Garage door won’t close at all
- Garage door opens a little, then stops
- Garage door closes halfway, then reverses
- Garage door closes, then immediately opens back up
Sensors / Safety / Reversing
See all Sensor & Safety posts · Read the full guide
- Garage door sensor light blinking
- One sensor light on, the other off
- Door reverses when it touches the floor
- Door won’t close in bright sunlight
- Door won’t close when it’s raining/humid
Opener / Remote / Keypad
See all Opener/Remote/Keypad posts · Read the full guide
- Remote works only up close
- Wall button works but remotes don’t
- Keypad works but remote doesn’t
- Opener clicks but door doesn’t move
- Door won’t open after a power outage
Noises / Vibration
See all Noise & Vibration posts · Read the full guide
- Loud bang in garage (then the door won’t work)
- Grinding noise when opening or closing
- Squealing/screeching noise
- Rattling chain/belt noise
- Popping/clicking during movement
Power / Lights / Battery Backup
See all Power & Battery posts · Read the full guide
- Opener has power but won’t run
- Opener light flashes then stops
- Battery backup beeping
- Door works sometimes (intermittent)
- Door won’t open after a power outage
Weather / Seal / Insulation
See all Weather/Seal posts · Read the full guide
- Door won’t seal at the bottom
- Drafts/cold air around the edges
- Door sticks in winter
- Condensation inside the garage
- Bottom seal gap on one side
Not sure what you’re seeing?
Start here and follow the quick checklist: