still no 4wd!

[clownracer]

ok i have a 1994 gmc yukon

when i bought it the 4wd (shift on the floor) would not light up and i was not able to engage 4hi or 4lo the shifter would move but there were no lights on the floor and i confirmed that 4wd was not operational


so i dig into it a bit and found that the fuse was blown so i changed that (there is only one correct?)

still nothing.....so no one had a flow chart for diagnostics availible so i took a shot in the dark and popped in a new 4wd actuator now when i turn on the headlights i get a backlight on the shifter panel but STILL no 4wd and the little truck is still not lit up

WTF

whats my next step here? does anyone have a wiring diagram....or a flow chart? anyone have any suggestions?

 

[SunlitComet]

here:

 

[clownracer]

so i have power at both fuses but no where else none at the transfer case switch none at the front axel actuator and none at the solenoid....what is that first big box that both fuses are feeding and where is it located on my yukon?

 

[SunlitComet]

convenience center on inside firewall. under dash.

 

[clownracer]

convenience center on inside firewall. under dash.

fusebox?

 

[SunlitComet]

just a junction panel look to the left of brake pedal.

 

[clownracer]

ok cool i found it....no numbers or anything i was hoping itd be a relay or something

 

[SunlitComet]

nope just a junction point really.

 

[clownracer]

so any ideas what it could be? im just confused how power could be off everywhere

 

[SunlitComet]

no power vat convenience center connections either?