I only have high on the controls to the fan on my HVAC panel. It's got a new blower motor from july. Possible vacume leak? Where would I start to look for one of those,behind the HVAC control panel?

 

does your switch that controls where the air comes out switch from dash vents to defroster vents etc...? If not I had the same issue and checked all the vacuum lines and had no leaks then I tested the switch itself and found that the outlet that control the dash vents wasnt holding pressure so I replaced the switch and now everything works..

 

Yeah the selector switch works. Just the fan speed is not workin,except on high.

 

My bad...just a thought...have you checkedthe back of the switch with a multimeter ?

 

No,not good with electrical stuff. I think I have one though.

 

Out by the blower motor is the resistor that controls your speeds. Everything except high goes through it. Its two 8 mm headed screws and one connector with 4 wires in it and is directly to the right of the blower motor looking towards the back of the truck. That is probably your issue and it is cheap. Here is a link to give u a reference as to what it looks like.

Buy BWD Blower Motor Resistor RU1076 at Advance Auto Parts

 

Truck is fixed,thanks to carltonwebb. Blower motor resistor was the culprit.

 

Glad it worked Tyler. how are u with injectors?

 

Haven't done them yet. Done everything else though.

 

how hard to change blower motor?

 

Not hard at all. 20 min maybe