95 yukon hvac control wiring diagram issues

[jonnyukon]

Got the manual and new ac delco blower switch on its way ..

 

[jonnyukon]

Turned out to be a ground issue... The blower motor, high speed blower relay, and all the air control motors are on the same common ground . So I supplied a good ground and everything worked.. Even better than before..

 

[NaomiSays]

Glad to hear it bad grounds will get you every time. I can look up diagrams too in case anyone needs in the future.

 

[jonnyukon]

Yea I can't believe it was a ground issue ... My yukon has no rust anywhere.. Not even undercoat.. And the ground on the back of the right cylinder set head looks fine and it was tight..

 

[erindaking]

Turned out to be a ground issue... The blower motor, high speed blower relay, and all the air control motors are on the same common ground . So I supplied a good ground and everything worked.. Even better than before..

do you remember where it was located by any chance i’m having the same issue