If your truck's mirrors are acting up, you probably need to know how to reset gm power folding mirrors before you spend a dime at the dealership. It's one of those minor annoyances that can drive you crazy, especially when you're trying to pull into a tight garage or navigating a narrow drive-thru. One minute they're working fine, and the next, they're out of sync, making a clicking sound, or just refusing to budge when you hit the button.
The good news is that most of the time, this isn't a mechanical failure that requires a bunch of new parts. GM designed these mirrors with a "breakaway" feature, meaning if someone bumps into them or if you accidentally fold them by hand, the motor and the mirror housing can get disconnected. Resetting them is usually just a matter of teaching the computer and the gears how to talk to each other again.
Why Do These Mirrors Get Out of Sync?
Before we jump into the fix, it helps to understand why this happens in the first place. GM trucks and SUVs—like the Silverado, Sierra, Tahoe, and Yukon—have mirrors built to take a bit of a beating. If you're at a car wash and the big brushes push the mirrors inward, or if a passerby knocks into one in a parking lot, the internal mechanism disengages to prevent the motor from snapping.
When this happens, the mirror is "free-floating." You might notice that one mirror folds while the other stays put, or maybe they both move but don't quite go back to the right spot. Sometimes you'll hear a grinding or clicking noise because the motor is spinning but the gear isn't catching. That's your sign that a reset is overdue.
The Standard Reset Procedure
This is the "go-to" move for almost every GM vehicle from the mid-2000s up through the current models. It's incredibly simple, though it might take a few tries to get the timing right.
- Get in the driver's seat and make sure all the doors are closed. You want the electronics to be focused on the task at hand.
- Start the engine or at least turn the ignition to the "On" or "Accessory" position. Personally, I prefer having the engine running just to ensure there's a steady flow of voltage to the motors.
- Find your mirror fold button. On most GM trucks, this is a dedicated button on the door panel near the window switches. On some newer models, you might have to toggle a selector switch to the center and then press "down" or "fold."
- Fold the mirrors in. Press the button once to bring them toward the windows. Even if only one moves, or if neither moves but you hear the motors hum, let them finish their cycle.
- Fold them back out. Press the button again to move them to the driving position.
- Repeat the cycle. Here is the secret sauce: you often need to do this three or four times in a row.
What you're looking for is a loud click or pop sound. Don't let that sound scare you—it's actually the sound of the internal gears snapping back into their proper tracks. Once you hear that, the mirrors should start moving in perfect synchronization again.
What if They Still Won't Reset?
If you've cycled them five times and they're still acting wonky, don't panic yet. Sometimes the "manual" part of the manual reset needs to be a bit more literal.
If one mirror is stuck and refusing to move with the motor, try folding it in toward the window by hand while the truck is off. Then, get back in, start the truck, and use the power button to unfold it. Sometimes physically putting the mirror into the "folded" position helps the motor "find" the gear again when you hit the switch.
It's also worth checking if there's anything physically blocking the mirror. I've seen cases where a bit of road salt, ice, or even a tiny pebble got lodged in the hinge. It doesn't take much resistance for the motor to think it's hit an obstacle and stop moving as a safety precaution. Give the hinge area a quick blast with some compressed air or a garden hose if you've been off-roading lately.
Dealing with the Infamous Clicking Noise
If you're trying to learn how to reset gm power folding mirrors because you hear a constant click-click-click every time you start the truck, you might be dealing with a stripped gear. Inside that mirror housing, there's a small plastic gear that handles the heavy lifting. Over time, or if the mirror is forced too hard, the teeth on that plastic gear can wear down.
When the gear is stripped, the reset procedure might work temporarily, but the mirror will eventually lose its spot again. If the reset doesn't hold for more than a day or two, you might be looking at a hardware issue. The "dealership fix" is usually to replace the entire mirror assembly, which can cost hundreds of dollars. However, if you're handy, you can actually buy replacement metal gears online and rebuild the motor housing yourself for a fraction of the cost.
Checking the Fuses and Settings
Sometimes the issue isn't the gears at all; it's electrical. If you press the button and absolutely nothing happens—no hum, no click, no movement—you should check your fuses.
On most Silverados and Sierras, the mirror fuse is located in the cabin fuse block (usually on the side of the dashboard when you open the driver's door) or the engine bay fuse box. Check your owner's manual for the specific "Mirror" or "DFL" (Door Function Left/Right) fuse. If it's blown, no amount of resetting will help until you swap in a new fuse.
Also, check your vehicle settings through the infotainment screen. Some GM trucks have a "Park Tilt" or "Auto Fold" feature that can be toggled on and off. If your mirrors aren't folding when you lock the truck like they used to, it might just be that a setting got reset after a battery swap or a software update. Go into Settings > Vehicle > Comfort and Convenience and make sure "Remote Mirror Folding" is turned on.
When to Call in the Pros
I'm all for DIY fixes, but there comes a point where you have to admit defeat. If you've tried the cycling reset, checked the fuses, cleaned the hinges, and the mirrors still won't move, the motor itself might have burnt out.
If you're still under warranty, obviously let the dealership handle it. But if you're out of warranty, keep in mind that replacing the mirror glass or the motor is much cheaper than replacing the whole painted housing.
Maintenance Tips to Avoid Future Resets
Once you get your mirrors back in sync, you'll probably want to keep them that way. Here are a few tips to prevent having to do this again:
- Avoid the "Manual" Fold: Unless it's an emergency, always use the power button. Forcing the mirrors by hand is the number one cause of them getting out of sync.
- Watch Out for Ice: In the winter, ice can freeze the mirror hinge solid. If you hit the fold button while they're frozen, you risk stripping the gears or burning out the motor. If it's an icy morning, clear the mirrors by hand (gently!) before trying to use the power fold.
- Lube the Hinges: Every once in a while, a tiny bit of silicone spray in the hinge area can keep things moving smoothly. Just don't use anything that attracts a lot of dust, like heavy grease.
Wrapping It Up
Knowing how to reset gm power folding mirrors is a great skill to have in your back pocket. It saves you a trip to the shop and a lot of frustration. Most of the time, it really is as simple as cycling the button a few times and letting those gears "snap" back into place.
It might sound a little violent when they finally click, but that's just the sound of things going back to the way they should be. So, next time your truck "ear" is hanging out at a weird angle, don't sweat it—just give it a few cycles and you'll likely be back on the road with everything in its right place.