ok so I put in all new led blubs in the blinkers and they all turn on when I turn the headlights on and turn the blinker on they do not blink at all. when the headlights are off everything works. I put a new relay in for the led's any1 have any suggestions on what the problem could be

 

Plug and play LED's is the problem. They are usually made really horribly. and a lot of vehicles do not like them. Sorry to say.

 

i have full leds in all my turn signals and rear lights u need to sometimes reverse the led bulb so it will work in conjunction with everything

 

they all work when the headlights are off but once I turn the headlights on they wont blink for the blinker.

 

That is a good thing to try gitch... if that does not work, There is nothing you can do but try a different brand of LED bulbs. PNP LED's are hit and miss when it comes to quality, mostly, miss.

 

what is a gitch

 

i got some a while ago that didn't work right, it was like running a single phase bulb. Full power when running lights are on, no difference when brakes are applied. Also they got super hot so i took them back out

 

That persons username that I was responding to.

 

Yeah the blazers use a different wiring tactic to get the side marker lights on the front to get them to flash with the signals and act as a running light as well. So even if you get the main signals working, the side markers will only act as one or the other. I can go into more detail if you want, but I doubt it.

 

Gitch is my nick name my friends gave me it is also my user name. I garuntee the leds will work. I have a 2000 jimmy and I used front led amber signals,front white led marker lights,rear leds brake lights and running lights,led lisence plate lights, I had issues when installling them u need to have the truck running and lights on to install the leds the roight way some of them u put in wrong and will cause the signals to not work so u may need to reverse the order u installed them