1999 Chevy Blazer

Hi All, I am having some interesting problems. My Blazer is doing strange things. Sometimes the headlights dont work, other times the truck puts itself in 4Wlo, sometimes sounds like the blinker will not turn off, sometimes the door chime. This morning the anti-theft system went off when the passenger door was opened. Thing was I locked all the doors the night before, and it was unlocked. Any thoughts on what could be going on here? Thanks!

Sounds like you got electrical gremlins. My Blazer does too. I'd prebabally take it to a dealership or a GM certified repair man. I'd say it's prolly something to do with your alarm tho.

This sounds like corrosion to me. What year is the blazer? I'm assuming post 1989 since the 4x4 is electronic. Your front windshield may be leaking and water has gotten in behind the dashboard. Check the floorboards under the drivers pedals for water and/or rust.

Looked for rust in dash and on firewall.. but I did not see anything.