Originally Posted by 92chevyg10
My G10 has about 160k. Going down the freeway I clicked on the AC and immediately the transmission kicked down gears. Not sure exactly. After I parked and came back I tried to drive and I only have reverse and 1st gear now. I'm thinking it's an electrical issue, but when I comes to transmissions have little knowledge. There's no burning smell, or smoke. Just refuses to shift. Any ideas from the pro's?
Check the fuses
Does the Speed-O still function?