HVAC control unit rebuilder?

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

OR VietVet

GMT800 2005 Tahoe Z71
Navy Supporting Member
Joined
Oct 8, 2014
Posts
23,693
Reaction score
44,104
Location
Willamette Valley
2004 GMC Sierra, manual blue/red HVAC control head. Does anyone know of a rebuilder for these units?
 

Doubeleive

Wes
Supporting Member
Joined
Nov 7, 2017
Posts
30,515
Reaction score
47,936
Location
Stockton, Ca.
2004 GMC Sierra, manual blue/red HVAC control head. Does anyone know of a rebuilder for these units?
the manual controls are not hard to come by, several sellers on ebay offer "rebuilt ones"
 
OP
OP
OR VietVet

OR VietVet

GMT800 2005 Tahoe Z71
Navy Supporting Member
Joined
Oct 8, 2014
Posts
23,693
Reaction score
44,104
Location
Willamette Valley
Yea, but, want to get the original one rebuilt, not buy a rebuilt unit.
 

Doubeleive

Wes
Supporting Member
Joined
Nov 7, 2017
Posts
30,515
Reaction score
47,936
Location
Stockton, Ca.
Yea, but, want to get the original one rebuilt, not buy a rebuilt unit.
you would probably have to reach out to one of those sellers, cardone does rebuilds on things and probably some other places but you may end up paying a premium for that.
there is probably a couple dozen of these out in my local junkyard as we speak
 

Fless

Staff member
Moderator
Joined
Apr 2, 2017
Posts
16,281
Reaction score
33,655
Location
People's Republic of Colorado
They're not that difficult to disassemble and clean. I had my AUTO one apart, cleaned the buttons and the two temperature pots, and replaced the bulbs (from www.carradiobulbs.com).

20230728_3 control bulbs with blue filters.jpg
 
Last edited:

Doubeleive

Wes
Supporting Member
Joined
Nov 7, 2017
Posts
30,515
Reaction score
47,936
Location
Stockton, Ca.
Just curious here....

Is there a proven issue with the HVAC control?
the manual ones usually just get worn over time, the "turn" knob has a copper leg that switches position inside the control to a corresponding copper leg over time they get **** built up and maybe even burnt some, this causes loss of contact and the control then may only operate sporadically. the plastic bits inside also become VERY brittle so if you open one up you have to be very careful.
the digital ones are more prone to failing electronically and the lights burn out. one thing they will do is work intermittent, it may work upon a key cycle for a few minutes or may just stop working mid-drive until you cycle the key again, this often create a headache because then you are chasing a ghost thinking the ac is low or pump not working etc...

then.... in either analog or digital on the gmt800's the blower motor resistor takes a crap and throws another troubleshooting step in the mix
 

Jobi-Wan Kenobi

Full Access Member
Joined
Aug 27, 2022
Posts
289
Reaction score
345
I'm actually looking here for a gauge cluster too.

 

nick0789

Full Access Member
Joined
Aug 22, 2017
Posts
209
Reaction score
177
It's almost 2 months later, but I got a rebuilt one (digital control) from "pro-rebuild" on Ebay back in October 2023:

Installed it and had no issues for a couple weeks, then had the power button stick. Messaged him and he sent a new one out the same day and I got it a couple days later. Sent the old one back, no questions asked. Highly recommend. Still no issues today.
 

Fless

Staff member
Moderator
Joined
Apr 2, 2017
Posts
16,281
Reaction score
33,655
Location
People's Republic of Colorado
It's almost 2 months later, but I got a rebuilt one (digital control) from "pro-rebuild" on Ebay back in October 2023:

Installed it and had no issues for a couple weeks, then had the power button stick. Messaged him and he sent a new one out the same day and I got it a couple days later. Sent the old one back, no questions asked. Highly recommend. Still no issues today.

The voice-over in the eBay video sounds exactly like the guy who does the "I do cars" YouTube videos. I'd bet it's that guy -- they're around St. Louis.
 

Forum statistics

Threads
137,705
Posts
1,990,095
Members
102,699
Latest member
moto

Latest posts

Back
Top