So I went to have the codes pulled for my check engine light,
And noone can get it to connect to their computer anyone had this problem?

 

Check fuse 20 on fuse block inside truck. See attached from RAVE

 

Same as before I pulled every fuse today and tested them

Im about to give up

 

If a code reader won't work on your truck, and fuse is good, then one of the seven ECU's output is grounded and knocking down the signal for all the others. Or wiring bad on back of plug. Some one would have to unplug each ECU styte module one at a time to see when you start being able to talk to the main one. This will by design make a lot of codes.

Also, if you check fuses with Mark I Eyeball, sometimes a hairline crack will esape detection. Use a meter.

 

I'm having the same issue and tracked it down to header 286. I had a water leak from the outside air intake for the climate control which caused the water to corrode a few of the electrical headers under the heating/air conditioning blower. I tracked that down by checking continuity from the diagnostic connector to the ecu after verifying the diagnostic connector was getting power and ground.

Anybody know where I can get replacement header blocks to repair the corroded ones?