Thanks for the response! We just bought ours used as well and can't speak for much of it's history. Fingers crossed it could be something so simple for us!
Did you ever find an answer to this problem? We are having the same issue with our 15 suburban. Passive entry buttons work on passenger side by neither work on drivers side.
Did you ever find an answer to this problem? We are having the same issue with our 15 suburban. Passive entry buttons work on passenger side by neither work on drivers side.