Hi, it just happened suddenly today.

I have no lower rear brake lights and no turn signals. The rear running lights work as does the upper brake light at the top of the vehicle. When I use the turn signals, nothing at all on the dash and nothing at all on any of the turn signals.

I checked the fuses in the door and fuses under the hood and all are fine. I checked the rear bulbs and all are fine. I checked the Flasher switch behind the glove compartment and replaced it prior to knowing I also had no lower rear brake lights and it didn't help.

Any suggestions?

Have you checked bulbs?
Check at rear tail lights for 12 volts to it on brake light or turn signals.

Thanks for your reply, all the bulbs are good but I figured out the problem after searching here today.

The hazard switch in the turn signal multifunction unit is fried. I wedged a match pack into the switch and all of the lights are working now.

I also called the dealer hoping tp get it covered under the recall but I had already had the unit replaced in 2003 as part of the recall so they won't fix it again for free.

I ordered a new Delco unit for $120 and will get it installed next week.

BTW, how difficult is it to replace the switch?

Anyone know how difficult it is to replace the multifunction turn signal switch unit on a 2000 Blazer with tilt?

I have the replacement part and I see two mounting screw holes and one wiring harness connection. It doesn't look too difficult but I'd like to know if anyone has done one and anything I need to watch out for while installing it.

Thanks ...

It is a piece of cake.
Just do not blow air bag.
Always disconnect battery when working on wires.
Good luck
MT