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What did you do with your GMT400 today...or yesterday....

Arrived at Montana home and had a delivery of a new HVAC control unit for the ‘99 Suburban. Old one stopped working properly. Fan was always on, no matter the position and there was no change in speed. New one installed in minutes and back to working normal.

IMG_4113.jpeg
 
Big T said:
Arrived at Montana home and had a delivery of a new HVAC control unit for the ‘99 Suburban. Old one stopped working properly. Fan was always on, no matter the position and there was no change in speed. New one installed in minutes and back to working normal.

View attachment 99860
Click to expand...
Do you by chance still have the part number handy? It is the same controller used in the 96.5 and newer Hummers, and is part of a desired upgrade for the older ones.

My 95 uses a 93 truck controller and afaik many other related parts for the ac system.
 
Will L. said:
Do you by chance still have the part number handy? It is the same controller used in the 96.5 and newer Hummers, and is part of a desired upgrade for the older ones.

My 95 uses a 93 truck controller and afaik many other related parts for the ac system.
Click to expand...
I have it, but they have different units depending on whether you have rear window defogger, which the Suburban does. It’s a unit by SKP, so it’s Chinese.
 
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