1999 blazer might be a dumb question but when i use door switch to lock doors all lock except drivers door i have to lock it manually i took panel off to grease and look for obstructions but found none, all the door manually lock the same(feel) i call it clunk clunk is this normal for blazers?

 

oh and the switch will unlock the drivers door but not lock it

 

sounds like an electrical problem have you tried checking for power at the lock assemblies?

 

yes like i said it will unlock but not lock, it moves maybe quarter of an inch and that all

 

i didnt know if this was some sort of safety thing to keep you from accidentally locking your self out

 

It will do that if the keys are in the ignition. If there is power and it is trying then you my good sir need a power door lock actuator. Those run between $200 to $350 new although used may be your least expensive option.

 

i was afraid of that, it will unlock and not lock,does the door latch *** have to be removed to change this?

 

54 bucks https://www.rockauto.com/en/catalog/...actuator,13257

 

Yep, sounds like the latch needs replaced. When I bought my 04 the drivers door did the same thing, would unlock with power but not lock. Turns out someone in its past let the door hinge bushings get WAY too far gone, the door sagged, they kept slamming the door shut, and it busted the latch to hell... Honestly surprised it was still holding the door shut... Put in a junk yard latch, problem resolved.

 

i needed an excuse to go harbor freight to get some new torx bits, ugh