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Hello all, I've been reading the forums and what a wealth of info. I have a quick question, my rear heat does not work at all in my Yukon. I have used the front controls, the rear controls and still the air is ice cold. I have looked under the passenger rear wheel well and the heater lines are indeed hot.

I have heard others talk of an actuator used to control the hot/cold air. I have an appt. at the dealer on Wed. and am not sure something like this would be covered under the extended warr.

If not, does anyone know about how much this part costs?

Thanks in advance,

Jay

2004 GMC Yukon, Summitt White, XM, Leather

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Hello all, I've been reading the forums and what a wealth of info.  I have a quick question, my rear heat does not work at all in my Yukon.  I have used the front controls, the rear controls and still the air is ice cold.  I have looked under the passenger rear wheel well and the heater lines are indeed hot.

I have heard others talk of an actuator used to control the hot/cold air.  I have an appt. at the dealer on Wed. and am not sure something like this would be covered under the extended warr. 

If not, does anyone know about how much this part costs?

Thanks in advance,

Jay

2004 GMC Yukon, Summitt White, XM, Leather

 

 

 

 

If you have the GM Bumper to Bumper warranty and it is still active there is no reason it shouldn't be covered. The only way they could possibly refuse is if you have been tampering with it and it broke. That warranty covers any defects for the specifed time of the warranty

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Hello all, I've been reading the forums and what a wealth of info.  I have a quick question, my rear heat does not work at all in my Yukon.  I have used the front controls, the rear controls and still the air is ice cold.  I have looked under the passenger rear wheel well and the heater lines are indeed hot.

I have heard others talk of an actuator used to control the hot/cold air.  I have an appt. at the dealer on Wed. and am not sure something like this would be covered under the extended warr. 

If not, does anyone know about how much this part costs?

Thanks in advance,

Jay

2004 GMC Yukon, Summitt White, XM, Leather

 

 

 

 

 

So, what did you learn? My Yukon has the same problem - much appreciate the info.

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Hello all, I've been reading the forums and what a wealth of info.  I have a quick question, my rear heat does not work at all in my Yukon.  I have used the front controls, the rear controls and still the air is ice cold.  I have looked under the passenger rear wheel well and the heater lines are indeed hot.

I have heard others talk of an actuator used to control the hot/cold air.  I have an appt. at the dealer on Wed. and am not sure something like this would be covered under the extended warr. 

If not, does anyone know about how much this part costs?

Thanks in advance,

Jay

2004 GMC Yukon, Summitt White, XM, Leather

 

 

 

 

 

So, what did you learn? My Yukon has the same problem - much appreciate the info.

 

 

 

 

It ended up being the actuator for the rear HVAC system. I was told that the actuator went past 90 degrees and got bound up. This is why it would not switch from cold/hot. Replaced and all is well again.

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So, the old, "went past 90 and got bound up", trick!  That's what I'll start with.  Thanks :D

 

 

 

 

 

Just a follow-up if anyone else is interested. The actuator part no. is 16164972

My local GM dealer wanted $129 part was in stock. Car Quest wanted $109 part would be delivered in one day. RockAuto.com had a sub for $30 - delivery for $21, next day - OK, I'm trying the $50 solution.

 

It's not a tough job to replace, just a lot of plastic to remove.

 

Good Luck - :crackup:

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