I looked this issue up and found a bunch of threads but none that had exact same issues i'm having.

I just bought my first chevy truck, its a 2002 2500 hd. all lights work except: rear drivers side blinker, both reverse lights, hazard lights, and all power to the trailer hitch, (the truck is fitted with a tow package with 6 prong fitting)

I've checked all fuses (that i can find, under hood and panel on side of drivers door/dash) I've also replaced the bulbs in affected areas. still nothing.

I've changed flasher in the past on my other trucks but wasnt sure if all these issues would be cause by the flasher.

I'm also not convinced that its the harness connectors in all these locations causing all problems.

Any ideas would be greatly appreciated?

Thanks