One problem related to owners/service manual has been reported for the 2003 Chevrolet Trailblazer. The most recently reported issues are listed below.
Shut off vehicle , got out of drivers side. Shut door and as I closed door all my locks on door locked down. My grandaughter was strapped into a car seat in the back seat and we were unable to open doors to get her out. We had to contact police and they were unable to get doors to unlock. The locks would not work the windows would not work , the car was completely locked down . After 30 minutes of trying to get I to car we finally got my grandaughter to squeeze out of her car seat upon coaxing her we got her to get her car seat belt unlocked , she tried pushing the door lock buttons but nothing would work, we had her try to use window buttons but they would not work either , we tried having her manually unlock door but they would. Unlock but door would not unlock. Upon despair we had her take key out of ignition and I carefully had her push unlock button on key chain and finally they engaged and unlocked the doors and windows and we got her out. This could of been a real dangerous incident if she would of not been able to follow my directions thank god she was Smart. Or of car would of been running I don't know what could of happened . This has then happened numerous times while I was in passenger side while my husband went I to bank and store. I became locked in the car . I think this ness to be investigated because I have read this happening to many Trailblazers owners. This could be a very dangerous situation.