I bought my Blazer a few weeks ago and immedietly noticed the backup lights were not working.

Since almost every bulb in her was burned out or fried, I bought new bulbs and when I pulled out the old lights they were fine.

The second thing I checked was the reverse switch in the transmission. I had the tranny rebuilt right after I bought it, so I thought that that had to be the issue! I unplugged the sensor and everything seems fine.

I am unsure where to go from here...

Any Ideas?

 

Sorry if this is too obvious but you didnt mention it in your post...

Check fuses?

 

Yea sorry, I should have put that in the post...

Fuses are all good...

 

Did you actually check for continuity on the reverse switch?

 

Yea, the switch was bad, so I changed it and still no go... I ran out of time, but hopefully tomorrow I am going to check if the new switch is actually working when I put it in reverse. If it is not working, I have an issue with my tranmission and if my ohms meter beeps it a wiring issue.