Bought a used Equinox a couple months ago. Its running great, no complaints. But the other day while I was stopped at a redlight, I reached down and tried to detach a key from my key ring. And the key in the ignition came right out. Car just kept running never missing a beat. When I got home, I decided to try another key in the ignition, and only putting the tip of my house key I could start the vehicle. Im wondering if this car was stolen and it has another ignition in it. I bought it at a used car dealer.
I know a few people with older Equinoxs and the cars were known for "stuck key" problems from approximately 2006 to 2012, specially:
1) the key could be inserted into the ignition, but it could not be turned because the ignition lock cylinder was really stiff, and/or
2) The engine would start then cut-out, and/or
3) The key could not be removed from the ignition lock cylinder
The solution was to replace the ignition lock cylinder. If I recall correctly the repair cost was around $500 at the dealer. Normally in a non-security chip car this was a relatively easy job and you wouldn't normally see any follow-on problems. If you google this problem, you will see 1000s of hits.
I'm guessing:
1) It's possible someone performed the repair and screwed up. That said, I can't see how another key would be able to turn the ignition, so I think this is less likely the fault.
2) What I think happened is that someone experienced the stuck ignition lock cylinder problem, perhaps didn't want to pay the $500, so they intentionally damaged the inside of the cylinder and now any key will work
3) The car was stolen and the thief damaged the inside of the cylinder and now any key will work
Did you but the car from a dealer or a private individual? Did you get a carfax? If you bought it from a dealer and you are within 90 days (60 days?) this repair would be covered under the certification.
BTW, the Equinox is a good car. Everyone I know that has one, loves it. Good luck with the repair, please let us know what happens.