99 Yukon right rear blinker ??????????

[jesterdzs]

just bought a 99 yukon ithought it just had a bad tail light bulb , replaced it 2 times but................. its still not working , any ideas as to what else i could check , wiring looks excelent no cuts or splices , but it does have a factory trailering harness .......... but it looks good to , all the other bulbs work , the front blinker works finr, the bulb does look dim when the lights are on but wont blink ,
Please help

 

[sweetk30]

if its the old c/k 88-up body the cirkit board is probly bad. thay have aftermarket now.

if 99-up silverado body then ? havent played with them much yet.

 

[dhcomp]

Before you buy a new board, take apart the trailer wiring harness. Our burb always blew turn signal fuses. I unplugged the one we had on a 96 burb and it was full of water - probably 6 months after we had launched our boat! Clean it out if its gross....dry it out, and put it back together. Ours still had a problem, so i bought one of the Uhaul harnesses (with the status lights and everything, and you can get the nice cap/bracket setup if you want too) and it solved the problem.