71 chevy Square/Round key

[shortbox9]

my 'new' chevy c10 only came with a square key. it doesn't seem to work in the door locks. did the '71 chevy c10 come with a round key for the door lock or should the ignition key work for door locks also?

[tommys72]

my 72 only has one key to start it and unlock the doors

[jchav62]

My '67 has a round key for the doors, square for the ignition. My '73 had the same thing.

[bonnieclyde100]

gm used a separate door key all the way into the 1990s

[shortbox9]

thanks for feedback. next question, how would i go about getting existing lock rekeyed to a round key? or do i have to install new entire lock?

[drewskiren]

My 72 has one square key for locks and ignition. I'm not sure, but wasn't that the way trucks were back then. I know my 70 Cutlass had square for ignition and round for the trunk and glovebox. I think I remember the doors were also square key. Later in the 70s round became doors and square was ignition only. I bet on your truck someone has replaced the ignition switch and you should have 2 square keys.

[Tinkermc]

you could remove the door lock and have it keyed.