Drives/passengers/defrost heat/ac not blowing at all...

[Travis Daniel]

Hey guys I'm new on here and I've got a 2005 Chevy Tahoe Z71 LT3 and for some reason my drivers and passengers heat/ac is blowing very little to none what so ever, and neither is my defrost? Anyone have any ideas on what's going on with my truck?? The rear seat heat/ac is working fine, it's my front that's not working... And when my fans turned all the way up on my controls it either blows very little or it won't even blow at all... Thanks in advance y'all!

 

[#1taho]

Search on this forum blend door actuator. Sounds like your problem. There are extensive wright ups on this issue.

 

[Travis Daniel]

If you don't mind me asking, what exactly does the blend door actuator have to do with my heat/ac not blowing out my vents? Not trying to be rude or anything like that, I'm just trying to gather all the info I can about the problem with my baby lol

 

[#1taho]

If you don't mind me asking, what exactly does the blend door actuator have to do with my heat/ac not blowing out my vents? Not trying to be rude or anything like that, I'm just trying to gather all the info I can about the problem with my baby lol

I may have miss read. You have nothing blowing out the vents at all ?

 

[#1taho]

Can you hear the blower motor spin faster as you increase the speed ?

 

[Travis Daniel]

I may have miss read. You have nothing blowing out the vents at all ?

I have nothing blowing unless I'm doing at least 35mph, and I hear no motor blowing at all... If I'm sitting still nothing what so ever is coming out my vents, only when I'm driving

 

[#1taho]

I think first you should check the blower motor resistor.

 

[Travis Daniel]

Can you hear the blower motor spin faster as you increase the speed ?

Where's that at and how would I go about doing that?

 

[Mr. 960]

Where's that at and how would I go about doing that?

You need to pull the cover off the heater plenum box. The resistor is near the fan motor. Sounds like that may be your problem.

 

[Bob Claessens]

I may have miss read. You have nothing blowing out the vents at all ?

I have the same problem with my06 just wondering if I could hot wire the fan to a switch to get it to run