Try reprogramming it again with the instructions in your owners manual. If that doesn't work you might have to replace the fob.
Get some electrical contact cleaner and clean the spots on the back of the rubber part of your fob. Those are the contact points of your fob. If that doesn't do the trick you can bring your fob to your local service Chevy. dealer and he has this little tester that checks the fob. and the dealer service guy did mine for free !! omg right. Mine was broke and I needed a new fob though.Other one is on it's way out too but I really don't feel like shelling out almost 100.00 fro a new fob with the programing of it as well
If this is just strictly a KEY FOB ISSUE like mine was, there is an easy solution! If you're looking to avoid going to the dealership, or your vehicle is no longer under warranty, I had some stuff laying the house that fixed this problem for me. Very fast, easy and cheap! 2 things you'll need...1) Super Glue, 2) Aluminum Foil or Conductive Copper Tape. I had the same issue with my 2012 Malibu (Lock, Unlock, and Remote Start would NOT work). Trunk release and alarm buttons both worked still, fuses in the car were good. I took apart both key fobs, and removed the circuit boards with the battery attached. Took the back side of the rubber pieces with the conductive contacts showing, and super glued VERY small pieces of conductive copper adhesive tape to the tiny contact circles (ON THE BACK SIDE OF THE RUBBER PIECE). Put it back together, works like a charm every time now! Very cheap fix, and you can do it yourself in no time! I recommend trying that as it worked for me. Hope this helps someone looking for an easy fix...
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