On the passenger side underneath the dash, look for a connector with four wires. The blower motor resistor should have two small bolts holding it in place
Your truck has both. the resistor is between the switch & blower.thje resistor controls the blower speed
In the truck!
The blower resistor on a 1999 Chevy truck Z1500 is located behind the glove compartment. There is also a resistor on the firewall next to the blower motor itself.
If it's a fan speed issue check the blower motor resistor & the blower motor. Check the plugs at the resistor and blower motor for burn marks also.
The 2005 Ford F1 50 pickup truck blower motor resistor pack can be found on the firewall in the engine compartment. The blower motor resistor pack is on the passenger side of the firewall.
RIGHT BESIDE THE BLOWER MOTOR UNDER PASSENGER SIDE OF DASH
they are usually found close to the blower motor.
The blower motor resistor is located under the front dash on the passenger side of the truck. It is a fairly simple job to replace...maybe 15 minutes. The blower motor resistor is located under the front dash on the passenger side of the truck. It is a fairly simple job to replace...maybe 15 minutes.
In the switch assembly itself.
usually what causes that is the blower motor resistor. Get a volt meter and test it according to it's values, 90 percent of the time it's the RESISTOR.
Behind the glove box, remove glove box and two harnesses and you will see the top of it. Its very tight quarters so take your time.