* Mirrors not adjusting: Check the power mirror switch on the driver's door. Make sure it's working correctly. If the switch is faulty, you'll need to replace it. Also, check the fuses related to the power mirrors in your fuse box (consult your owner's manual for fuse locations and diagrams).
* Mirrors not returning to default position (if applicable): Some vehicles with power mirrors have a feature where they automatically return to a neutral position. This usually involves holding the adjustment switch in a particular position for a few seconds. Refer to your owner's manual for specifics; your Suburban likely doesn't have this sophisticated feature.
* Mirror motor is stuck: If a mirror is stuck in one position, the motor may be faulty. This requires replacement of the mirror assembly or possibly just the motor itself.
* Wiring issues: A broken or loose wire in the door harness can prevent the mirrors from functioning. This often requires professional diagnosis and repair as the wiring is within the door itself.
In short: There's no reset. If your mirrors aren't working, troubleshoot the electrical system (fuses, switch, wiring) and consider the possibility of a faulty motor. Your owner's manual is your best resource for diagrams and fuse box locations. If you're not comfortable working on the electrical system yourself, it's best to take it to a mechanic.
