A four-wheel drive (4WD) truck or SUV uses a transfer case to switch between two-wheel drive and four-wheel drive modes. On most 4WDs, the transfer case is activated by vacuum diaphragms. These diaphragms, meanwhile, are operated electronically through switches. If your 4WD vehicle has difficulty switching between drive modes, then chances are you've got a bad transfer case electrical switch. That's, of course, assuming you've checked all vacuum hoses for leaks or damage. If there's a vacuum leak somewhere in the hoses leading up to the diaphragms, your car's transfer case will not respond. If not, then the problem lies with the switches. They must be worn out through the years and have to be replaced. Depending on the age of your vehicle, you may want to replace each transfer case electrical switch just to make sure the problem doesn't reoccur. Replacing the switches should be pretty straightforward. Just make sure your battery's negative terminal is disconnected before you start working. You'll find quality switches here at Auto Parts Deal.
• The electrical switch ensures that you can change between 2wd and 4wd modes easily.
• Our transfer case electrical switches come with limited warranty.
• As OE replacements, our switches can be installed quickly.
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