1999 Suburban Backup / Reverse Lights Not Working

[tde]

Hi,

When I shift into reverse, the corresponding lights do not turn on. Thinking maybe they were burned out, I replaced them but still no dice.

I checked the driver side dashboard fuse panel as well, all fuses are fine. Turn signals, brake lights, etc all work fine...it's just the backup lights.

My next guess is a bad wire or circuit board, but I'm not sure where to look.

I'm a novice, but if any experienced people out there tell me where to look I can probably take care of it as I'm pretty good with my hands.

Thanks in advance!

TD
'99 K1500 Suburban 4x4

[Case 7230]

It is unlikely that both bulbs would be bad but worth checking them. Not an expert but if I had to guess I would say that the neutral safety switch is bad. I would think (not 100% sure) that the NSS is at the bottom of the steering column near the floorboards.
Hopefully some of the experts will give an opinion soon.

[chevychase]

What case has said .. also could be circuit board .. had a lot of flaws in it.