I havent posted in awhile. I really haven't had any issues with my blazer until now. It keeps blowing the fuse inside the cabin when i move the selector switch from the off position. Ive had this truck for several years and its alway done what i asked for it to do. It just turned 343k with no rebuilds. I know it has a short i just cant find it. I almost forgot this is a 96 s10 blazer.

Thanks in advance for your help
Rick

 

Which fuse?

Try disconnecting things like the plug that supplies power to the blower motor and then see if the fuse still blows when you turn the switch from off to on. If it doesn't blow, then the motor needs to be replaced.

 

Its the fuse on drivers side dash panel.. And it still blows the fuse even after disconnecting the blower motor. Supposed to get snow today so i wont be working on it today. More research today.

Rick

 

I also have a 99 blazer thats in good shape and has a heater so ill be driving that for now but it doesnt have the tires my 96 does and it doesnt get around in the slick stuff like my 96 does.

 

Hmmmm. Well either there is something else in the blower motor circuit that is shorted out or the blower motor circuit has been damaged somehow.

Any chance wires behind the dash being pinched or crushed after doing work in there?

Regarding other things in blower motor circuit to check, the only other one I can think of is the blower motor speed control resistors. There might be other items though.

 

I will check it out when it gets warmer..getting new tires on the 99 blazer monday.

 

Check the fuse rating and bridge it with an adequate lightbulb. When:

• the lightbulb is on - You have a short circuit
• the lightbulb gets dark - short circuit is gone

Haven't seen the wiring diagram, but I suspect You may have the problem within a resistor heater or the blower motor (probably they're supplied through a same fuse). Try disconnecting either of those and see.

 

Thanks everyone..hopefully i can work on it tomorrow before work..

Rick

 

Well its still blowing fuses. Im going into the fuse panel tomorrow afternoon. I will find this.

 

Well i think i have figured it out. It got to dark to finish it so i will finsh it tomorrow. It was shorting out on the tranny filler tube. This is what is shorting out.