03 Denali: No Rear Heat....why?
- Thread starter wade
- Start date
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tast101
Supporting Member
The rear heater is probably out. Mine is, but it's been in the 100*s so I had no reason to get it fixed. It's located in the rear cargo area under the panel on the passenger side.
tast101
Supporting Member
I think there are lines that run to it. When I went to have something else, I think the dealer told me its was like $110-$150 if I remember correctly. But not sure about today's prices.
---------- Post added at 04:13 PM ---------- Previous post was at 03:50 PM ----------
might just be the actuator, since the blower is still working, There is also a heater core in there. I have my manual that I can prolly scan for you.
1992 - 2006 GMC Yukon Vent Door Actuator for REAR AUXILARY HEATER CASE
---------- Post added at 04:13 PM ---------- Previous post was at 03:50 PM ----------
might just be the actuator, since the blower is still working, There is also a heater core in there. I have my manual that I can prolly scan for you.
1992 - 2006 GMC Yukon Vent Door Actuator for REAR AUXILARY HEATER CASE
tast101
Supporting Member
I haven't tore into mine, but that might be a quick fix, Not sure if the whole unit may be bad. But in a couple searches on the net, found some saying their actuator was bad. Assuming that the blower is still working and it's blowing cold air that maybe it's just something wrong with the heater part of the unit. I'm not sure tho. Just figured it would be one thing to check.
Have the dealer diagnose it and if you wanna tackle it go ahead or pay them to fix it.
Have the dealer diagnose it and if you wanna tackle it go ahead or pay them to fix it.
tast101
Supporting Member
Thanks to Bliz for tearing into his truck and dynamating it, heres what the heating unit looks like:
It's on the right side. When I had some other work done, they checked it out. Not sure what all they did, but I know they pulled the panel. Not sure if they can plug up to diagnose it or if they checked all the part to see which one isn't working.
It's on the right side. When I had some other work done, they checked it out. Not sure what all they did, but I know they pulled the panel. Not sure if they can plug up to diagnose it or if they checked all the part to see which one isn't working.
