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The 2001 Tahoe does not use freon. It uses R-134a. If you have to ask and think it takes freon you should probably leave it to a professional. I'm assuming you will be using some sort of DIY kit. They include detailed instructions. Your best bet if going the DIY route is to buy a kit with a gauge to insure against overcharging your system. If that happens then surely you'll be visiting the shop.

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15y ago

What else can I help you with?