back-up lights not working

[mduryea88]

I'm new to this forum stuff, but i need some help. i recently bought a 95 k2500 350 5 speed( mg5 rpo). i'm having trouble getting the back up lights to work. brakes and signals work, i replaced the switch at the trans, can't figure it out, my wiring diagrams only show me so much and i don't feel like ripping the whole truck apart. yet anyway.

 

[94Sierra4x4]

Possible circuit board issue? Or bad ground.
Would say switch @ trans but you've replaced it..

 

[shelbyt.67]

Check the ground at the back of the frame rail. Check any trailer harness (or ex harness location). Clean bulb sockets.

 

[mduryea88]

thanks guys, i checked the grounds, new taillight assemblies, i guess it might be the shifter\ lever inside the trans that pushes on switch might be worn. it has 193000 miles,

 

[shelbyt.67]

did u get the right switch? When I changed mine,they gave me a switch with a shorter sensing stud. Hada go back fer the longer version. Not sure why there are two sizes.

 

[mduryea88]

i got the longer one, i brought the one that was in the truck to match up. three stores tried selling me the one for an automatic, said i brought the wrong switch.

 

[96-1500]

Definitely check your ground. I had the same problem.