gmt400 pick up heated privacy back window

[Beast96]

Slightly off topic but is there a way to add this feature to a truck that didnt have it. tinted or not doesn't matter to me

 

[FastOrange]

I have a 1993 6 lug K2500 that is full load, has every option I can think of for these truck, including rear defrost, pop out windows are tinted, rear is clear.

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