My 2000 Suburban side mirrors will not move up or down on both sides, but I can get them to move left and right if I keep pushing the controller several times. Has anyone experienced this and successfully got them working again in all four directions?
Sounds like a problem with the controller switch. It’s probably broken inside, and needs to be replaced.
I’m having the same problem with the side mirrors on my 2000 Blazer. Try spraying the back of the switch with CRC Electrical Contact Cleaner.