Hey guys, Writing from miami, FL here about some 03' Silverado 5.3l ext cab 1500 truck. A few days ago I noticed that fan speeds for my air conditioning 1-4 no longer work, while only speed 5 works. After some research I have found that this is a common problem with the resistor pack- when they go bad, they dont provide the resistance neccessary to the blower, hence, only full speed #5 works because on speed 5 there are no resistors working to provide less voltage to the fan motor. Anyone familiar with this issue, where all these parts are located and how to access the resistors most easily. Also, where the motor/blower is and how to replace if needed. If anyone is familiar and is located in Miami, even better. Please advise regardless of your geographic location. Pics of this issue also welcomed. thanks in advance guys!