Why did my lights quit coming on automatically on my 2003 chevy venture

Sounds like a grounding issue. Check the wiring

Me too, same problem here.

It sound like you have a grounding problem, does the headlight on the left seem dimmer than the right? Check the ground wires and the light sockets for corrosion.

The blinking light is telling you that you have a headlight out, if you look the service light should be coming on when the light stops blinking.
Replace the head light and all should be fine.

sounds like fuseblock underhood is faulty..front control module is on fuseblock

Most likely is a fuse. There is a fuse box at the end of the right side of the dash. Open front passenger door and there is a cover that says fuses on the end of dash. There is also a fuse box located under the hood at the right front of engine compartment. It should have a cover with a round knob in the middle of it .Unscrew the knob to remove cover.

I just replaced the low-beam bulb on my 2003 Chevy Trailblazer. The grill just needs to be loosed slightly. Then, raise two L shaped brackets, one on each side. For the inside one, I needed to use a flathead screwdriver to get to it. The light assembly can then be pulled out. Remove the rubber cover and rotate the bulb one quarter turn left to release it. Pull out the bulb, replace with a new one ($11.50) from Advance Auto Parts, and reverse the process. Once I figured it out, took about 10 minutes total.

THIS IS IN the corner lamp next to headlight correct? open hood you will see a screw where corner light mounts to headlight. remove screw and light will come out so you can change bulb. it is clipped into fender

Go to your local NAPA auto parts store and get replacement tail lights circuit boards. This should solve the problem. I did for my daughters van.

Solution to your problem ... 1- I purchased from 1aauto.com a pair of Circuit Boards for my Chevy Venture 2003 for 85.00 $ ..free shipping 2 - I Installed them both , all lights now were not working at all. So I checked them and they were all burned ...So I purchased new ones ....Everything was working fine now but now my signal lights were not working left and right .....Checked the fuse box next to the passenger side door .... It was burned . Changed the fuse / Signals are working fine now ....All is good I just did this yesterday evening August 12, 2008 Conclusion ..Change everything going forward so you do not need to run around like I did from one store to another!

1. Circuit Board : New
2. Bulbs : New
3. Fuses : New

Thank you