Where is the blower resistor on a 1999 K1500 Suburban?

The blower motor resistor on a 1999 Chevy K1500 Suburban is typically located behind the glove box. You'll likely need to remove the glove box to access it. It's often mounted to the HVAC housing. However, it *could* be in a slightly different location depending on trim level and options. A wiring diagram or a repair manual specific to your year and model would be helpful for precise location.