Rosietheaccord

Ok so, yesterday took my car to autozone to see why my CEl was on. Guy told me it was a gear selector switch. I researched them on here and found people with the same problem but their D4 light was blinking. Mine doesn't. It's got about 137k on it and has had oil changed and fluids checks regularly. It does seem to struggle with switching from 1st to second ( it's automatic) also if I have to stop on a hill sometimes it jerks really hard when I try to go. From a dead stop it revs up to 3000 RPM before switching and feels really sluggish. Does this sound like a gear selector switch? If not what does it sound like? Also mu SRS light is on. Idk if that is repeated or not