2001 Blazer LT, power locks, remote locks, 74k miles.

I have an interesting problem. I recently discovered that neither of my front door locks work with a key. Nothing wrong with the manual, power, or remote power locking/unlocking. I have 2 factory keys, both are in good shape, not worn out, it only has 74k on it. I had 2 spares made when I bought it back in September, and I tried all 4 keys in the doors at the time all worked fine.

I just happened to try to use a key on the driver door yesterday and it went in fine, but will not turn. Tried the other door, same. Tried the rest of the keys...same. Go in all the way, won't budge.

I consider this very odd. They were working fine, and now BOTH are doing this at the same time. Please tell me I am missing something really dumb. Never saw this on anything before, and I have read through the manual also.

Thanks for any help!

 

Even the factory keys don't work in it? Try shooting some PB blaster or WD 40 in there and jiggling your key around a lil bit, might just be some stuck tumblers in there from not getting use

 

Got locked out of my '01 because of this problem, easy fix. Get some WD-40, put the key partly into the hole and soak the key hole with the WD-40. Then spray the key some and move it in and out of the hole. Goal is just to get as much WD-40 into the key hole as possible.

The lock is just frozen, WD-40 is great to fix that.

 

It's possible that someone changed the ignition cylinder which resulted in different keys than what the truck came with originally. Also possible that the doors were changed for one reason or another.

You could rekey the ones you have (or an extra set purchased from pick-n-pull):

 

Thanks for the replies. I'll keep working on it, just wanted to see of anyone knew of anything real stupid that these things might do. I have had 4 s-10's never seen this. It's like both of them just refuse to budge...but they worked not but a month or two ago..I know at the drivers side did. Yep even factory keys...but they have worked before now.

I would expect this from a new car with a crazy keyfob and a plastic backup key! but not my trusty ol Chevy...

 

Are you sure it's your blazer??

Sorry, had to ask....

 

Wow... I completely missed that they were working. At least the video I posted shows you how to take them apart if spraying it with some lube doesn't free them up.

 

PB Blastered the heck out of them today. No-go. They both act like wrong keys. I am 99.9% sure I have used the manual key locks at least once since I go this Blazer...but alas...something is amiss.

 

Well. I think...better run out to the garage and be sure!