I have a 1983 Camaro Z28. Like I said in the title, I can't get the rear hatch open! I can fold down the license plate and put the key in, but it won't turn. I tried pliers, but the key would start to bend...

I wasn't able to see anything from the inside of the car to unlatch it either. Any ideas? Thanks for the help. Should I post this is the general forum too?

could try spraying some corrosion-eater or lubricant into the keyhole.

works for an F-150 whose lock cylinders freeze up from time to time.

souds like the lock is shot, try what 57th said, if doest work, drill the lock out, and replace it.

Ok, I tried spraying in some WD40, no go. Does this qualify as lubricant?

Yes, WD40 does count as a lubricant. How long did you let it sit? To me it sounds jammed though, you may have to resort to drilling but try letting it sit a while first (overnight). Good luck.